E. Alarcón, Dept. d Enginyeria Electrònica

Size: px
Start display at page:

Download "E. Alarcón, Dept. d Enginyeria Electrònica"

Transcription

1 A. Camps, Dept. Teoria del Senyal I Comunicacions E. Alarcón, Dept. d Enginyeria Electrònica 1

2 Introduction This session is intended to the study of the performance for a satellite using the AGI s software STK (Satellite Tool Kit). This program is widely used for satellite simulation purposes, and their ground stations. It allows the user to make an exhaustive calculus of the orbit and their parameters. In this lab session the main parameters for the different aspects of a satellite mission will be studied. Students will be able to learn the how to define several parameters of a mission in order to make a good planning of a mission. Orbit and spacecraft definition First of all, start the STK by doble-clicking in the icon. When the welcome window appears Create a New Scenario. Name it PAEprova and set an Analysis Period of one year. The main window will be reordered and new windows will appear. You can observe the 2D and 3D graphics windows. You can move, maximize, minimize or close any window as in the MS Windows environment. In the 3D perspective, the 3D simulation of the Earth can be observed. By left-clicking it, the camera can be rotated freely in order to see all the regions of the globe. Observe that there is a shadowed area and an illuminated one, corresponding to the day and night regions in the hour of day shown above the window, right next to the reproduction options. The 2D perspective gives a vision of the globe in a cylindrical development. First of all, a Satellite object has to be inserted. It will be done with the help of the Orbit Wizard. Select both options on the window appeared. If not, just right click the satellite object go Satellite -> Orbit Wizard. We should set the orbital parameters as: 2

3 Satellite name: SMOS Tipe or Orbit: Sun-Synch Altitude: 758 km Ascending node: 6h Use Scenario Time Period: OK The next step is to watch the satellite ground track. Go to the Object Browser box, double-click on the satellite. Go through 2D Graphics -> Pass -> Ground Track -> Lead Type and set Time: 1 day. It is observed the 0-drift of the orbit. Then change the Time parameter to Full. The coverage the satellite does over the Earth is noticed to be global except in the polar areas. 1) Why does it happen? To observe how the satellite is covering the different regions of the surface, set the Show Pass: 1 to 50. The first 50 paths are shown. Reset the Show Pass to one. As STK is capable of simulate different kinds of orbits, it can show the performance data for a defined spacecraft with the orbit choice. To see how the height of the satellite evolves, right-click on the satellite icon and select Report and Graph Manager, and mark the button on the list Create new graph style. Type out Height and then, in the new list appeared, go through Astrogator Values -> Geodetic ->Altitude. On the top 3

4 right box, mark the right arrow (Insert Y axis) and click OK. Select Height style, rightclick on it, and click on Generate strip chart. Place the new generated white window on the upper half of the STK screen and the 2D map on the lower one. When clicking on the play button, the travel position of the spacecraft is showed linked to the height evolution. You can also generate a Graph instead of a Strip Chart to see height changes. Make sure to specify a one-day interval on Time Properties. 2) Why is the height over the Earth varying in a sine-like manner? What happens with the velocity-height relationship? Coverage In order to know how an Earth observation satellite borne sensor works, it is necessary to attach one to the satellite. We have to go to the menu Insert -> New... -> Sensor -> Define Properties -> Insert... There SMOS have to be selected and press OK. In the properties window, go to Basic -> Definition. The Sensor Type has to be set as Simple Conic, with a Cone Angle of 27.5º. Then Basic -> Pointing and set Elevation: 60º. In order to see the swath advance over the map, go to 2D Graphics -> Attributes and set: Colour: Fill: ON red Then press OK and Play. 4

5 3) Which is the reason that produces the swath widening? To see a complete day swath evolution, right-click on the sensor and go Sensor -> Swath and set Swath: ON; Start Time - Stop Time: (one day period). Tracking To see the performance of communications of the satellite, a ground station has to be included. Follow the menu Insert -> New -> Facilities -> Define properties and set: Latitude: º N Longitude: º E Use terrain data: ON and then press OK. Rename the ground station as Svalbard, as it is the name of the satellite control center located on that coordinates. To calculate the communications parameters, the following parameters have to be introduced in Insert -> New -> Transmitter -> Define Properties and attach it to SMOS. Now select Type: Medium transmitter model and set: Model Specs: Freq: 433 MHz Power: 30 dbm Gain: 5 db Polarization: Right-hand Circular Modulator Data Rate: 1200 bps Modulation type: FSK -> Apply and press OK. Now click on Insert -> New -> Receiver -> Define properties and attach it Svalbard. Select simple receiver model and set the same frequency band and polarization. On Definition -> Model Specs set Auto-track: ON and then click OK. 5

6 To compute zones where the satellite is visible, right-click on the transmitter (SMOS) and following through the menus, select the antenna on the ground station. In Compute Time Period, select one day on the Specify time period field. Then clicking on Compute, observe the 2D graphic. The in-coverage flight parts of the orbit will be shown in bold. Clicking the Play button, the performance of the satellite will be sought entering and leaving the tracking region. Returning to Access and going through Reports -> Access again, the communication time interval and the global communication time are shown. To see the link budget, go to the previous Reports menu and then click Link Budget. There, some parameters such as frequency, Doppler and power received could be checked. SNR and BER can also be checked if you set noise parameters, but not all options will be available on educational version. You can simulate really complex link budgets with that tool. Lifetime and orbit degradation STK does an estimation of the orbit degradation giving us the satellite lifetime, the moment when the satellite will fall and the approximated zone. Right-click on the SMOS icon and go through Satellite -> Lifetime -> Mass, set 1 kg, set Show Graphics: OFF. Then click on Compute. With the report, the satellite evolution could be followed. With the graphics, the evolution of the orbital parameters could be monitored meanwhile the orbit is degrading. Repeat the process twice and then repeat it three times more with a satellite mass of 1000 kg. 4) Is there any difference between the estimations? Write down the possible causes. 6

7 Analysis of a LEO orbit (Low Earth Orbit) a) Orbital parameters First of all, create a new scenario clicking File -> New. Set an analysis period of a year. Insert a satellite selecting Define properties. Choose Basic -> Orbit (the default option) and define the orbit from the Keplerian parameters: Propagator: Two body Semi-major Axis: km Using the combo box (pull-down menu) where the orbit semi-major axis has been written, select the option Period. That calculates the orbital period taking into account all the other parameters. 5) What is the orbital period in minutes? 6) How many revolutions will make it in a whole day? (you can use help by changing the units of the orbital period, or by using the option Mean Motion). 7

8 Introduce the following parameters: Eccentricity: RAA (Right Ascension of Ascending Node): 0º Argument of the perigee: 90º True Anomaly: 45.37º 7) What is the altitude in the perigee? 8) And in the apogee? Click OK and go to 2D perspective. Observe the ground tracks of the orbit as time passes. The reproduction buttons can be used in order to look the satellite motion above the Earth, and the speed it takes depending on the regions due to the 2D projection. Take a look graphically to the relationship between the satellite speed and its altitude in the orbit. To do so, select the satellite and click Report and Graph manager. The graphs tools menu will appear. Some pre-defined graphics are shown, but new selfdefined ones can be created. Click New. Different magnitudes will appear that can be observed in a graph vs. time. Select the satellite altitude in LLA State -> Fixed > Alt and the speed in Cartesian Velocity -> Fixed -> Speed. Click Ok. Change the name to 8

9 AltSpd, it will be used later. Visualize the graph by clicking Generate in the Report & Graph Manager. Make sure that the graph is generated for a one-day period. 9) What is the qualitative relationship between the altitude and the speed? Could you explain why? b) GeoSynchronous Orbit Define now an orbit that repeats itself along the days using the Orbit Wizard. Rightclick the satellite and go to Satellite -> Orbit Wizard. The wizard will be started. Click Next. In Orbit Selection choose Repeating Ground Trace and then Next. Give it a polar inclination, i.e. 90º, and simulate a 16:1 orbit (16 different orbits in a day). To do so select: Aproximate Revs. per day: 16,0 Number of Revs. to repeat: 16 Click Next and Finish. Open satellite properties, go to Pass on 2D Graphics label and select Time on Lead Type (inside Ground Track box) and write 1 day. Now view the orbit traces in the 2D perspective. Look that, differently of the previous orbit, the ground tracks close each other, and by simulating only one day all the different traces created can be seen. Count the number of traces; observe that there are 16 ascending and 16 descending passes. 10) Taking into account the fact that the inclination is now 90º, and that the orbit goes from North to South, the traces should be perfectly vertical. However, they are a bit inclined. Could you explain why? Go back to satellite properties, and set the inclination to 98º, so as to see a bit better the traces on the 2D perspective (go to Properties Browser by double-clicking the satellite and the go to the 2D perspective after applying). Calculate the spacing between ground-tracks using the Measure tool. You will need to show Animation toolbar in order to find that tool. To do so, right-click to 2D map and select Animation in Toolbar. Click the tool, then click in a region of the map and drag to another (calculate the distances between ground-tracks in the equator, where its distance is maximal). Below the 2D perspective the distance will appear. 9

10 11) What s the separation between ground-tracks? Go back to satellite properties, and set One pass on Lead Type. Vary now the type of orbit. Re-open Orbit Wizard. Select again Repeating Ground Trace orbit and put the following parameters: Aproximate Revs. per day: 16,0 Number of Revs. to repeat: 49 Inclination: 98º Orbit Start: 1 Jul 2011 Orbit Stop: 4 Jul 2011 Step time: 120s Click Finish. View the orbit in the 2D perspective. Here many more orbits can be seen (there are three times more). This is a 49:3 orbit: there are 49 different orbits that repeat every 3 days. Recalculate the distance between ground-tracks using Measure. 10

11 12) What is the separation between ground-tracks? What is the relationship between this value and the one in the previous orbit? GeoSynchronous Orbit Open again the Orbit Wizard and select as kind of orbit Repeating, Sun Sync. We will define a 43:3 orbit (43 different orbits repeated in 3 days) and we will simulate ir along a year. Set the following parameters: Aproximate Revs. per day: 14,33333 Number of Revs. to repeat: 43 Inclination: 98º Orbit Start: 1 Jul 2011 Orbit Stop: 4 Jul 2012 Step time: 1200s Create a new graph style. Choose Classical Elements -> J200 -> RAAN. Create a graph for a year period. 13) The RAAN is a measure of angle, and it always grows, taking all the possible range (0-360º). Taking into account the kind of orbit used, could you explain the performance of the RAAN along the year? c) Analysis of a GEO orbit Open again Orbit Wizard right-clicking the satellite. To get a Geostationary orbit, we have to select Geosynchronous orbit and play with its parameters. Setting a 0º inclination, the satellite will always point to the same place, but it will only be able to be above the equator. Setting the Subsatellite point, we can put the satellite where we want. 11

12 14) What parameters have we to put to set orbit satellite above Barcelona? Is always pointing to there? Why? Modify the anchor camera point using View From/To button in 3D Graphics toolbar. Make the view from the Satellite towards Earth. Reproduce the simulation in 3D perspective and see what the satellite sees. Notice that you can always see the same region over the earth. Open satellite properties again and set 30º of inclination. Observe how the groundtrack shape is a kind of 8 in 2D Graphics. d) Analysis of a HEO orbit A highly elliptical orbit designed to observe high latitudes is studied next. They have been typically used by communication satellites because they spend lot of time in the apogee pointing a small region. They also have been used by spy satellites. Go to Orbit wizard and select Molniya Orbit. Put the following parameters: Apogee Longitude: -17 deg Perigee Altitude: 961 km Argument of Perigee: 269 deg 12

13 Simulate it in 3D Graphics. 15) Which zones of the world have a long time coverage by the satellite? View again the previously created graph, containing the altitude and the speed against time. Go to Graph Tool and create the graph we previously named AltSpd. 16) What are the remarkable aspects? What is the range of the speed and the altitude? Observe the 3D perspective. See that the orbit is really elliptical, and in the Perigee is very close to the Earth s surface. The wide speed difference the satellite has between the farthest and the nearest points can be appreciated. Finally, the 2D perspective shows us that the satellite is at high latitudes during a long period of time, while in the lower latitudes it passes very fast. This orbit repeats itself along the time, but there are many uncovered regions in the great majority of the globe s surface. Another con is that the satellite crosses Van Allen belt s each orbit, receiving high radiation doses. 13

Penn State University Physics 211 ORBITAL MECHANICS 1

Penn State University Physics 211 ORBITAL MECHANICS 1 ORBITAL MECHANICS 1 PURPOSE The purpose of this laboratory project is to calculate, verify and then simulate various satellite orbit scenarios for an artificial satellite orbiting the earth. First, there

More information

Orbital Mechanics and Space Geometry

Orbital Mechanics and Space Geometry Orbital Mechanics and Space Geometry AERO4701 Space Engineering 3 Week 2 Overview First Hour Co-ordinate Systems and Frames of Reference (Review) Kepler s equations, Orbital Elements Second Hour Orbit

More information

2. Orbits. FER-Zagreb, Satellite communication systems 2011/12

2. Orbits. FER-Zagreb, Satellite communication systems 2011/12 2. Orbits Topics Orbit types Kepler and Newton laws Coverage area Influence of Earth 1 Orbit types According to inclination angle Equatorial Polar Inclinational orbit According to shape Circular orbit

More information

Artificial Satellites Earth & Sky

Artificial Satellites Earth & Sky Artificial Satellites Earth & Sky Name: Introduction In this lab, you will have the opportunity to find out when satellites may be visible from the RPI campus, and if any are visible during the activity,

More information

Hyperspectral Satellite Imaging Planning a Mission

Hyperspectral Satellite Imaging Planning a Mission Hyperspectral Satellite Imaging Planning a Mission Victor Gardner University of Maryland 2007 AIAA Region 1 Mid-Atlantic Student Conference National Institute of Aerospace, Langley, VA Outline Objective

More information

Where On Earth Will Three Different Satellites Provide Simultaneous Coverage?

Where On Earth Will Three Different Satellites Provide Simultaneous Coverage? Where On Earth Will Three Different Satellites Provide Simultaneous Coverage? In this exercise you will use STK/Coverage to model and analyze the quality and quantity of coverage provided by the Earth

More information

Orbital Mechanics. Angular Momentum

Orbital Mechanics. Angular Momentum Orbital Mechanics The objects that orbit earth have only a few forces acting on them, the largest being the gravitational pull from the earth. The trajectories that satellites or rockets follow are largely

More information

Learn From The Proven Best!

Learn From The Proven Best! Applied Technology Institute (ATIcourses.com) Stay Current In Your Field Broaden Your Knowledge Increase Productivity 349 Berkshire Drive Riva, Maryland 1140 888-501-100 410-956-8805 Website: www.aticourses.com

More information

Coverage Characteristics of Earth Satellites

Coverage Characteristics of Earth Satellites Coverage Characteristics of Earth Satellites This document describes two MATLAB scripts that can be used to determine coverage characteristics of single satellites, and Walker and user-defined satellite

More information

Mobile Communications: Satellite Systems

Mobile Communications: Satellite Systems Mobile Communications: Satellite Systems Mobile Communication: Satellite Systems - Jochen Schiller http://www.jochenschiller.de 1 History of satellite communication 1945 Arthur C. Clarke publishes an essay

More information

SATELLITE ORBIT DETERMINATION AND ANALYSIS (S.O.D.A) A VISUAL TOOL OF SATELLITE ORBIT FOR SPACE ENGINEERING EDUCATION & RESEARCH

SATELLITE ORBIT DETERMINATION AND ANALYSIS (S.O.D.A) A VISUAL TOOL OF SATELLITE ORBIT FOR SPACE ENGINEERING EDUCATION & RESEARCH SATELLITE ORBIT DETERMINATION AND ANALYSIS (S.O.D.A) A VISUAL TOOL OF SATELLITE ORBIT FOR SPACE ENGINEERING EDUCATION & RESEARCH 1 Muhammad Shamsul Kamal Adnan, 2 Md. Azlin Md. Said, 3 M. Helmi Othman,

More information

Basic Coordinates & Seasons Student Guide

Basic Coordinates & Seasons Student Guide Name: Basic Coordinates & Seasons Student Guide There are three main sections to this module: terrestrial coordinates, celestial equatorial coordinates, and understanding how the ecliptic is related to

More information

Understanding Orbital Mechanics Through a Step-by-Step Examination of the Space-Based Infrared System (SBIRS)

Understanding Orbital Mechanics Through a Step-by-Step Examination of the Space-Based Infrared System (SBIRS) Understanding Orbital Mechanics Through a Step-by-Step Examination of the Space-Based Infrared System (SBIRS) Denny Sissom Elmco, Inc. May 2003 Pg 1 of 27 SSMD-1102-366 [1] The Ground-Based Midcourse Defense

More information

Introduction to satellite constellations orbital types, uses and related facts

Introduction to satellite constellations orbital types, uses and related facts Introduction to satellite constellations orbital types, uses and related facts Dr Lloyd Wood space team, Cisco Systems http://www.cisco.com/go/space Guest lecture, ISU summer session July 2006 created

More information

RS platforms. Fabio Dell Acqua - Gruppo di Telerilevamento

RS platforms. Fabio Dell Acqua - Gruppo di Telerilevamento RS platforms Platform vs. instrument Sensor Platform Instrument The remote sensor can be ideally represented as an instrument carried by a platform Platforms Remote Sensing: Ground-based air-borne space-borne

More information

Lecture L17 - Orbit Transfers and Interplanetary Trajectories

Lecture L17 - Orbit Transfers and Interplanetary Trajectories S. Widnall, J. Peraire 16.07 Dynamics Fall 008 Version.0 Lecture L17 - Orbit Transfers and Interplanetary Trajectories In this lecture, we will consider how to transfer from one orbit, to another or to

More information

Mobile Communications Chapter 5: Satellite Systems

Mobile Communications Chapter 5: Satellite Systems Mobile Communications Chapter 5: Satellite Systems History Basics Localization Handover Routing Systems History of satellite communication 1945 Arthur C. Clarke publishes an essay about Extra Terrestrial

More information

Development of a Sun Synchronous. Conjunctions

Development of a Sun Synchronous. Conjunctions Development of a Sun Synchronous Zoning Architecture to Minimize Conjunctions Kevin Shortt Brian Weeden Secure World Foundation www.secureworldfoundation.org Overview Current Situation in Sun synchronous

More information

Section 4: The Basics of Satellite Orbits

Section 4: The Basics of Satellite Orbits Section 4: The Basics of Satellite Orbits MOTION IN SPACE VS. MOTION IN THE ATMOSPHERE The motion of objects in the atmosphere differs in three important ways from the motion of objects in space. First,

More information

Trajectory Design with STK/Astrogator. New Horizons Mission Tutorial

Trajectory Design with STK/Astrogator. New Horizons Mission Tutorial Trajectory Design with STK/Astrogator New Horizons Mission Tutorial STK/Astrogator New Horizons Mission Tutorial Page 2 Mission Overview In this tutorial, we will model a Mission to Pluto. Starting from

More information

Planetary Orbit Simulator Student Guide

Planetary Orbit Simulator Student Guide Name: Planetary Orbit Simulator Student Guide Background Material Answer the following questions after reviewing the Kepler's Laws and Planetary Motion and Newton and Planetary Motion background pages.

More information

ME 24-688 Week 11 Introduction to Dynamic Simulation

ME 24-688 Week 11 Introduction to Dynamic Simulation The purpose of this introduction to dynamic simulation project is to explorer the dynamic simulation environment of Autodesk Inventor Professional. This environment allows you to perform rigid body dynamic

More information

DEVELOPMENT OF AN ARCHITECTURE OF SUN-SYNCHRONOUS ORBITAL SLOTS TO MINIMIZE CONJUNCTIONS. Brian Weeden Secure World Foundation

DEVELOPMENT OF AN ARCHITECTURE OF SUN-SYNCHRONOUS ORBITAL SLOTS TO MINIMIZE CONJUNCTIONS. Brian Weeden Secure World Foundation DEVELOPMENT OF AN ARCHITECTURE OF SUN-SYNCHRONOUS ORBITAL SLOTS TO MINIMIZE CONJUNCTIONS Brian Weeden Secure World Foundation Sun-synchronous orbit (SSO) satellites serve many important functions, primarily

More information

5. Satellite Systems. History of Satellite Communications

5. Satellite Systems. History of Satellite Communications 5. Satellite Systems History and Orbits Routing, Localization, and Hand-over Systems 2005 Burkhard Stiller and Jochen Schiller FU Berlin M5 1 History of Satellite Communications 1945 Arthur C. Clarke about

More information

Manual English KOI Desktop App 2.0.x

Manual English KOI Desktop App 2.0.x Manual English KOI Desktop App 2.0.x KOI Kommunikation, Organisation, Information Comm-Unity EDV GmbH 2010 Contents Introduction... 3 Information on how to use the documentation... 3 System requirements:...

More information

Chapter 2. Mission Analysis. 2.1 Mission Geometry

Chapter 2. Mission Analysis. 2.1 Mission Geometry Chapter 2 Mission Analysis As noted in Chapter 1, orbital and attitude dynamics must be considered as coupled. That is to say, the orbital motion of a spacecraft affects the attitude motion, and the attitude

More information

PROTECTION OF THE BROADCASTING SERVICE FROM BROADCASTING SATELLITE SERVICE TRANSMISSIONS IN THE BAND 620 790 MHz

PROTECTION OF THE BROADCASTING SERVICE FROM BROADCASTING SATELLITE SERVICE TRANSMISSIONS IN THE BAND 620 790 MHz Electronic Communications Committee (ECC) within the European Conference of Postal and Telecommunications Administrations (CEPT) PROTECTION OF THE BROADCASTING SERVICE FROM BROADCASTING SATELLITE SERVICE

More information

Introduction to Google Earth

Introduction to Google Earth Center for Teaching, Research & Learning Social Science Research Lab American University, Washington, D.C. http://www.american.edu/provost/ctrl/ 202-885-3862 Introduction to Google Earth This tutorial

More information

Gephi Tutorial Visualization

Gephi Tutorial Visualization Gephi Tutorial Welcome to this Gephi tutorial. It will guide you to the basic and advanced visualization settings in Gephi. The selection and interaction with tools will also be introduced. Follow the

More information

Use the following information to deduce that the gravitational field strength at the surface of the Earth is approximately 10 N kg 1.

Use the following information to deduce that the gravitational field strength at the surface of the Earth is approximately 10 N kg 1. IB PHYSICS: Gravitational Forces Review 1. This question is about gravitation and ocean tides. (b) State Newton s law of universal gravitation. Use the following information to deduce that the gravitational

More information

Satellite Mission Analysis

Satellite Mission Analysis CARLETON UNIVERSITY SPACECRAFT DESIGN PROJECT 2004 FINAL DESIGN REPORT Satellite Mission Analysis FDR Reference Code: FDR-SAT-2004-3.2.A Team/Group: Satellite Mission Analysis Date of Submission: April

More information

Section 2. Satellite Orbits

Section 2. Satellite Orbits Section 2. Satellite Orbits References Kidder and Vonder Haar: chapter 2 Stephens: chapter 1, pp. 25-30 Rees: chapter 9, pp. 174-192 In order to understand satellites and the remote sounding data obtained

More information

Mobile Computing. Chapter 5: Satellite Systems

Mobile Computing. Chapter 5: Satellite Systems Mobile Computing Chapter 5: Satellite Systems Prof. Sang-Jo Yoo History of satellite communication 1945 Arthur C. Clarke publishes an essay about Extra Terrestrial Relays 1957 First satellite SPUTNIK by

More information

Analysis on the Long-term Orbital Evolution and Maintenance of KOMPSAT-2

Analysis on the Long-term Orbital Evolution and Maintenance of KOMPSAT-2 Analysis on the Long-term Orbital Evolution and Maintenance of KOMPSAT-2 Ok-Chul Jung 1 Korea Aerospace Research Institute (KARI), 45 Eoeun-dong, Daejeon, South Korea, 305-333 Jung-Hoon Shin 2 Korea Advanced

More information

SUN-SYNCHRONOUS ORBIT SLOT ARCHITECTURE ANALYSIS AND DEVELOPMENT. A Thesis. Presented to. the Faculty of California Polytechnic State University

SUN-SYNCHRONOUS ORBIT SLOT ARCHITECTURE ANALYSIS AND DEVELOPMENT. A Thesis. Presented to. the Faculty of California Polytechnic State University SUN-SYNCHRONOUS ORBIT SLOT ARCHITECTURE ANALYSIS AND DEVELOPMENT A Thesis Presented to the Faculty of California Polytechnic State University San Luis Obispo In Partial Fulfillment of the Requirements

More information

Lunar Phase Simulator Student Guide

Lunar Phase Simulator Student Guide Name: Lunar Phase Simulator Student Guide Part I: Background Material Answer the following questions after reviewing the background pages for the simulator. Page 1 Introduction to Moon Phases Is there

More information

Satellite Posi+oning. Lecture 5: Satellite Orbits. Jan Johansson jan.johansson@chalmers.se Chalmers University of Technology, 2013

Satellite Posi+oning. Lecture 5: Satellite Orbits. Jan Johansson jan.johansson@chalmers.se Chalmers University of Technology, 2013 Lecture 5: Satellite Orbits Jan Johansson jan.johansson@chalmers.se Chalmers University of Technology, 2013 Geometry Satellite Plasma Posi+oning physics Antenna theory Geophysics Time and Frequency GNSS

More information

Sun Earth Relationships

Sun Earth Relationships 1 ESCI-61 Introduction to Photovoltaic Technology Sun Earth Relationships Ridha Hamidi, Ph.D. Spring (sun aims directly at equator) Winter (northern hemisphere tilts away from sun) 23.5 2 Solar radiation

More information

Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE

Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE Interaction of Energy and Matter Gravity Measurement: Using Doppler Shifts to Measure Mass Concentration TEACHER GUIDE EMR and the Dawn Mission Electromagnetic radiation (EMR) will play a major role in

More information

Flight and Orbital Mechanics

Flight and Orbital Mechanics Flight and Orbital Mechanics Lecture slides Challenge the future 1 Material for exam: this presentation (i.e., no material from text book). Sun-synchronous orbit: used for a variety of earth-observing

More information

Data Visualization. Brief Overview of ArcMap

Data Visualization. Brief Overview of ArcMap Data Visualization Prepared by Francisco Olivera, Ph.D., P.E., Srikanth Koka and Lauren Walker Department of Civil Engineering September 13, 2006 Contents: Brief Overview of ArcMap Goals of the Exercise

More information

CBERS Program Update Jacie 2011. Frederico dos Santos Liporace AMS Kepler liporace@amskepler.com

CBERS Program Update Jacie 2011. Frederico dos Santos Liporace AMS Kepler liporace@amskepler.com CBERS Program Update Jacie 2011 Frederico dos Santos Liporace AMS Kepler liporace@amskepler.com Overview CBERS 3 and 4 characteristics Differences from previous CBERS satellites (CBERS 1/2/2B) Geometric

More information

Orientation to the Sky: Apparent Motions

Orientation to the Sky: Apparent Motions Chapter 2 Orientation to the Sky: Apparent Motions 2.1 Purpose The main goal of this lab is for you to gain an understanding of how the sky changes during the night and over the course of a year. We will

More information

Satellite Communication Systems. mgr inż. Krzysztof Włostowski Instytut Telekomunikacji PW chrisk@tele.pw.edu.pl

Satellite Communication Systems. mgr inż. Krzysztof Włostowski Instytut Telekomunikacji PW chrisk@tele.pw.edu.pl Satellite Communication Systems mgr inż. Krzysztof Włostowski Instytut Telekomunikacji PW chrisk@tele.pw.edu.pl Satellite Communication Satellite Communication combines the missile and microwave technologies

More information

Amateur Satellites Michael G7VJR. OSCAR communications from G6UW

Amateur Satellites Michael G7VJR. OSCAR communications from G6UW Amateur Satellites Michael G7VJR OSCAR communications from G6UW Overview Background of OSCAR and AMSAT Technical Topics Workable Satellites Using software and Yaesu FT-847 Next steps AMSAT and OSCAR AMSAT

More information

Attitude and Orbit Dynamics of High Area-to-Mass Ratio (HAMR) Objects and

Attitude and Orbit Dynamics of High Area-to-Mass Ratio (HAMR) Objects and Attitude and Orbit Dynamics of High Area-to-Mass Ratio (HAMR) Objects and Carolin Früh National Research Council Postdoctoral Fellow, AFRL, cfrueh@unm.edu Orbital Evolution of Space Debris Objects Main

More information

Satellite Communications

Satellite Communications Satellite Communications Department of Electrical Engineering Faculty of Engineering Chiangmai University Origin of Satellite Communications Arthur C. Clark (1945) British Science fiction writer propose

More information

Using Microsoft Word. Working With Objects

Using Microsoft Word. Working With Objects Using Microsoft Word Many Word documents will require elements that were created in programs other than Word, such as the picture to the right. Nontext elements in a document are referred to as Objects

More information

Use of Graphical Programming Tools for Electrical Engineering and Technology Courses

Use of Graphical Programming Tools for Electrical Engineering and Technology Courses Use of Graphical Programming Tools for Electrical Engineering and Technology Courses Salahuddin Qazi and Naseem Ishaq School of Information Systems and Engineering Technology State University of New York

More information

Earth, Sun and Moon is a set of interactives designed to support the teaching of the QCA primary science scheme of work 5e - 'Earth, Sun and Moon'.

Earth, Sun and Moon is a set of interactives designed to support the teaching of the QCA primary science scheme of work 5e - 'Earth, Sun and Moon'. is a set of interactives designed to support the teaching of the QCA primary science scheme of work 5e - ''. Learning Connections Primary Science Interactives are teaching tools which have been created

More information

How to make a line graph using Excel 2007

How to make a line graph using Excel 2007 How to make a line graph using Excel 2007 Format your data sheet Make sure you have a title and each column of data has a title. If you are entering data by hand, use time or the independent variable in

More information

Excel Pivot Tables. Blue Pecan Computer Training Ltd - Onsite Training Provider www.bluepecantraining.com :: 0800 6124105 :: info@bluepecan.co.

Excel Pivot Tables. Blue Pecan Computer Training Ltd - Onsite Training Provider www.bluepecantraining.com :: 0800 6124105 :: info@bluepecan.co. Excel Pivot Tables 1 Table of Contents Pivot Tables... 3 Preparing Data for a Pivot Table... 3 Creating a Dynamic Range for a Pivot Table... 3 Creating a Pivot Table... 4 Removing a Field... 5 Change the

More information

Newton s Law of Universal Gravitation

Newton s Law of Universal Gravitation Newton s Law of Universal Gravitation The greatest moments in science are when two phenomena that were considered completely separate suddenly are seen as just two different versions of the same thing.

More information

Examination Space Missions and Applications I (AE2103) Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM

Examination Space Missions and Applications I (AE2103) Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM Examination Space Missions and Applications I AE2103 Faculty of Aerospace Engineering Delft University of Technology SAMPLE EXAM Please read these instructions first: This are a series of multiple-choice

More information

CELESTIAL CLOCK - THE SUN, THE MOON, AND THE STARS

CELESTIAL CLOCK - THE SUN, THE MOON, AND THE STARS INTRODUCTION CELESTIAL CLOCK - THE SUN, THE MOON, AND THE STARS This is a scientific presentation to provide you with knowledge you can use to understand the sky above in relation to the earth. Before

More information

Autodesk Fusion 360: Assemblies. Overview

Autodesk Fusion 360: Assemblies. Overview Overview In this module you will learn how different components can be put together to create an assembly. We will use several tools in Fusion 360 to make sure that these assemblies are constrained appropriately

More information

Mobile Communications Exercise: Satellite Systems and Wireless LANs. Georg von Zengen, IBR, TU Braunschweig, www.ibr.cs.tu-bs.de

Mobile Communications Exercise: Satellite Systems and Wireless LANs. Georg von Zengen, IBR, TU Braunschweig, www.ibr.cs.tu-bs.de Mobile Communications Exercise: Satellite Systems and Wireless LANs N 1 Please define the terms inclination and elevation using the following two figures. How do these parameters influence the usefulness

More information

Astromechanics Two-Body Problem (Cont)

Astromechanics Two-Body Problem (Cont) 5. Orbit Characteristics Astromechanics Two-Body Problem (Cont) We have shown that the in the two-body problem, the orbit of the satellite about the primary (or vice-versa) is a conic section, with the

More information

Chapter 11 Satellite Systems

Chapter 11 Satellite Systems Chapter 11 Satellite Systems 1 Outline Introduction Types of Satellite Characteristic of Satellite Systems Satellite System Infrastructures Call Setup GPS Limitations of GPS Beneficiaries of GPS Applications

More information

McIDAS-V Tutorial Displaying Polar Satellite Imagery updated September 2015 (software version 1.5)

McIDAS-V Tutorial Displaying Polar Satellite Imagery updated September 2015 (software version 1.5) McIDAS-V Tutorial Displaying Polar Satellite Imagery updated September 2015 (software version 1.5) McIDAS-V is a free, open source, visualization and data analysis software package that is the next generation

More information

'' EGGBEATER '' ANTENNA VHF/UHF ~ PART 2

'' EGGBEATER '' ANTENNA VHF/UHF ~ PART 2 '' EGGBEATER '' ANTENNA VHF/UHF ~ PART 2 ON6WG / F5VIF Summary Note : In Part 1, Fig 1 shows a maximum gain of 6.45 dbi. Several design attempts were made using slightly different configurations ( i.e.

More information

Mobile Communications Chapter 5: Satellite Systems

Mobile Communications Chapter 5: Satellite Systems History of satellite communication Mobile Communications Chapter 5: Satellite Systems History Basics Orbits LEO, MEO, GEO Examples Handover, Routing 1945 Arthur C. Clarke publishes an essay about Extra

More information

Introduction to Simulink

Introduction to Simulink Introduction to Simulink MEEN 364 Simulink is a software package for modeling, simulating, and analyzing dynamical systems. It supports linear and nonlinear systems, modeled in continuous time, sampled

More information

astronomy 2008 1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times.

astronomy 2008 1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times. 1. A planet was viewed from Earth for several hours. The diagrams below represent the appearance of the planet at four different times. 5. If the distance between the Earth and the Sun were increased,

More information

RECOMMENDATION ITU-R F.1113. (Question ITU-R 157/9) b) that systems using this mode of propagation are already in service for burst data transmission,

RECOMMENDATION ITU-R F.1113. (Question ITU-R 157/9) b) that systems using this mode of propagation are already in service for burst data transmission, Rec. ITU-R F.1113 1 RECOMMENDATION ITU-R F.1113 RADIO SYSTEMS EMPLOYING METEOR-BURST PROPAGATION (Question ITU-R 157/9) (1994) Rec. ITU-R F.1113 The ITU Radiocommunication Assembly, considering a) that

More information

Planning Terrestrial Radio Networks

Planning Terrestrial Radio Networks Planning Terrestrial Radio Networks Lab Exercise Manual IK2500 - Radio Communication, Basic Course September 23, 2008 Short Summary The scope of this lab is to help students to develop basic skills in

More information

Autodesk Fusion 360 Badge Guide: Design an F1 in Schools Trophy

Autodesk Fusion 360 Badge Guide: Design an F1 in Schools Trophy Autodesk Fusion 360 Badge Guide: Design an F1 in Schools Trophy Abstract: Gain basic understanding of creating 3D models in Fusion 360 by designing an F1 in Schools trophy. This badge may be claimed by

More information

FREE FALL. Introduction. Reference Young and Freedman, University Physics, 12 th Edition: Chapter 2, section 2.5

FREE FALL. Introduction. Reference Young and Freedman, University Physics, 12 th Edition: Chapter 2, section 2.5 Physics 161 FREE FALL Introduction This experiment is designed to study the motion of an object that is accelerated by the force of gravity. It also serves as an introduction to the data analysis capabilities

More information

State Newton's second law of motion for a particle, defining carefully each term used.

State Newton's second law of motion for a particle, defining carefully each term used. 5 Question 1. [Marks 20] An unmarked police car P is, travelling at the legal speed limit, v P, on a straight section of highway. At time t = 0, the police car is overtaken by a car C, which is speeding

More information

TABLE OF CONTENTS. INTRODUCTION... 5 Advance Concrete... 5 Where to find information?... 6 INSTALLATION... 7 STARTING ADVANCE CONCRETE...

TABLE OF CONTENTS. INTRODUCTION... 5 Advance Concrete... 5 Where to find information?... 6 INSTALLATION... 7 STARTING ADVANCE CONCRETE... Starting Guide TABLE OF CONTENTS INTRODUCTION... 5 Advance Concrete... 5 Where to find information?... 6 INSTALLATION... 7 STARTING ADVANCE CONCRETE... 7 ADVANCE CONCRETE USER INTERFACE... 7 Other important

More information

Directions for Frequency Tables, Histograms, and Frequency Bar Charts

Directions for Frequency Tables, Histograms, and Frequency Bar Charts Directions for Frequency Tables, Histograms, and Frequency Bar Charts Frequency Distribution Quantitative Ungrouped Data Dataset: Frequency_Distributions_Graphs-Quantitative.sav 1. Open the dataset containing

More information

Module SYSTEM INTRODUCTION & BASIC NAVIGATION. Astra Schedule Training Guide

Module SYSTEM INTRODUCTION & BASIC NAVIGATION. Astra Schedule Training Guide Module 1 SYSTEM INTRODUCTION & BASIC NAVIGATION Astra Schedule Training Guide Table of Contents Introduction... 1 Lesson Audience... 1 Lesson Objectives... 1 Configuration Requirements... 1 Common Practices...

More information

Module SYSTEM INTRODUCTION & BASIC NAVIGATION. Astra Schedule Training Guide

Module SYSTEM INTRODUCTION & BASIC NAVIGATION. Astra Schedule Training Guide Module A SYSTEM INTRODUCTION & BASIC NAVIGATION Astra Schedule Training Guide Table of Contents Introduction... 1 Lesson Audience... 1 Lesson Objectives... 1 Configuration Requirements... 1 Common Practices...

More information

Searching for space debris elements with the Pi of the Sky system

Searching for space debris elements with the Pi of the Sky system Searching for space debris elements with the Pi of the Sky system Marcin Sokołowski msok@fuw.edu.pl Soltan Institute for Nuclear Studies ( IPJ ) Warsaw, Poland 7th Integral / BART Workshop ( IBWS), 14-18

More information

Planning a Network with Different Users, Hosts, and Services

Planning a Network with Different Users, Hosts, and Services Laboratory 4 Network Design Planning a Network with Different Users, Hosts, and Services Objective The objective of this lab is to demonstrate the basics of designing a network, taking into consideration

More information

Creating Charts and Graphs

Creating Charts and Graphs Creating Charts and Graphs Title: Creating Charts and Graphs Version: 1. First edition: December 24 First English edition: December 24 Contents Overview...ii Copyright and trademark information...ii Feedback...ii

More information

Free Fall: Observing and Analyzing the Free Fall Motion of a Bouncing Ping-Pong Ball and Calculating the Free Fall Acceleration (Teacher s Guide)

Free Fall: Observing and Analyzing the Free Fall Motion of a Bouncing Ping-Pong Ball and Calculating the Free Fall Acceleration (Teacher s Guide) Free Fall: Observing and Analyzing the Free Fall Motion of a Bouncing Ping-Pong Ball and Calculating the Free Fall Acceleration (Teacher s Guide) 2012 WARD S Science v.11/12 OVERVIEW Students will measure

More information

Excel 2007 Basic knowledge

Excel 2007 Basic knowledge Ribbon menu The Ribbon menu system with tabs for various Excel commands. This Ribbon system replaces the traditional menus used with Excel 2003. Above the Ribbon in the upper-left corner is the Microsoft

More information

Newton s Law of Gravity

Newton s Law of Gravity Gravitational Potential Energy On Earth, depends on: object s mass (m) strength of gravity (g) distance object could potentially fall Gravitational Potential Energy In space, an object or gas cloud has

More information

Sittiporn Channumsin Co-authors

Sittiporn Channumsin Co-authors 28 Oct 2014 Space Glasgow Research Conference Sittiporn Channumsin Sittiporn Channumsin Co-authors S. Channumsin Outline Background Objective The model Simulation Results Conclusion and Future work 2 Space

More information

1. In the diagram below, the direct rays of the Sun are striking the Earth's surface at 23 º N. What is the date shown in the diagram?

1. In the diagram below, the direct rays of the Sun are striking the Earth's surface at 23 º N. What is the date shown in the diagram? 1. In the diagram below, the direct rays of the Sun are striking the Earth's surface at 23 º N. What is the date shown in the diagram? 5. During how many days of a calendar year is the Sun directly overhead

More information

Quasi-Synchronous Orbits

Quasi-Synchronous Orbits Quasi-Synchronous Orbits and Preliminary Mission Analysis for Phobos Observation and Access Orbits Paulo J. S. Gil Instituto Superior Técnico Simpósio Espaço 50 anos do 1º Voo Espacial Tripulado 12 de

More information

Applying a circular load. Immediate and consolidation settlement. Deformed contours. Query points and query lines. Graph query.

Applying a circular load. Immediate and consolidation settlement. Deformed contours. Query points and query lines. Graph query. Quick Start Tutorial 1-1 Quick Start Tutorial This quick start tutorial will cover some of the basic features of Settle3D. A circular load is applied to a single soil layer and settlements are examined.

More information

PERSISTENT MILITARY SATELLITE COMMUNICATIONS COVERAGE USING A CUBESAT CONSTELLATION IN LOW EARTH ORBIT JACQUELINE M. NELSON

PERSISTENT MILITARY SATELLITE COMMUNICATIONS COVERAGE USING A CUBESAT CONSTELLATION IN LOW EARTH ORBIT JACQUELINE M. NELSON PERSISTENT MILITARY SATELLITE COMMUNICATIONS COVERAGE USING A CUBESAT CONSTELLATION IN LOW EARTH ORBIT by JACQUELINE M. NELSON A thesis submitted in partial fulfillment of the requirements for the Honors

More information

Laminar Flow in a Baffled Stirred Mixer

Laminar Flow in a Baffled Stirred Mixer Laminar Flow in a Baffled Stirred Mixer Introduction This exercise exemplifies the use of the rotating machinery feature in the CFD Module. The Rotating Machinery interface allows you to model moving rotating

More information

MS Project Tutorial for Senior Design Using Microsoft Project to manage projects

MS Project Tutorial for Senior Design Using Microsoft Project to manage projects MS Project Tutorial for Senior Design Using Microsoft Project to manage projects Overview: Project management is an important part of the senior design process. For the most part, teams manage projects

More information

Acceleration of Gravity Lab Basic Version

Acceleration of Gravity Lab Basic Version Acceleration of Gravity Lab Basic Version In this lab you will explore the motion of falling objects. As an object begins to fall, it moves faster and faster (its velocity increases) due to the acceleration

More information

Lab Activity on the Causes of the Seasons

Lab Activity on the Causes of the Seasons Lab Activity on the Causes of the Seasons 2002 Ann Bykerk-Kauffman, Dept. of Geological and Environmental Sciences, California State University, Chico * Objectives When you have completed this lab you

More information

Using Excel for Business Analysis: A Guide to Financial Modelling Fundamentals

Using Excel for Business Analysis: A Guide to Financial Modelling Fundamentals Excel 2003 Instructions Using Excel for Business Analysis: A Guide to Financial Modelling Fundamentals contains extensive instructions for using Excel 2010 and Excel for Mac 2011. There are a few instances

More information

Summary of important mathematical operations and formulas (from first tutorial):

Summary of important mathematical operations and formulas (from first tutorial): EXCEL Intermediate Tutorial Summary of important mathematical operations and formulas (from first tutorial): Operation Key Addition + Subtraction - Multiplication * Division / Exponential ^ To enter a

More information

Data Visualization. Prepared by Francisco Olivera, Ph.D., Srikanth Koka Department of Civil Engineering Texas A&M University February 2004

Data Visualization. Prepared by Francisco Olivera, Ph.D., Srikanth Koka Department of Civil Engineering Texas A&M University February 2004 Data Visualization Prepared by Francisco Olivera, Ph.D., Srikanth Koka Department of Civil Engineering Texas A&M University February 2004 Contents Brief Overview of ArcMap Goals of the Exercise Computer

More information

Satellites and Space Stations

Satellites and Space Stations Satellites and Space Stations A satellite is an object or a body that revolves around another object, which is usually much larger in mass. Natural satellites include the planets, which revolve around

More information

Full credit for this chapter to Prof. Leonard Bachman of the University of Houston

Full credit for this chapter to Prof. Leonard Bachman of the University of Houston Chapter 6: SOLAR GEOMETRY Full credit for this chapter to Prof. Leonard Bachman of the University of Houston SOLAR GEOMETRY AS A DETERMINING FACTOR OF HEAT GAIN, SHADING AND THE POTENTIAL OF DAYLIGHT PENETRATION...

More information

F N A) 330 N 0.31 B) 310 N 0.33 C) 250 N 0.27 D) 290 N 0.30 E) 370 N 0.26

F N A) 330 N 0.31 B) 310 N 0.33 C) 250 N 0.27 D) 290 N 0.30 E) 370 N 0.26 Physics 23 Exam 2 Spring 2010 Dr. Alward Page 1 1. A 250-N force is directed horizontally as shown to push a 29-kg box up an inclined plane at a constant speed. Determine the magnitude of the normal force,

More information

State Newton's second law of motion for a particle, defining carefully each term used.

State Newton's second law of motion for a particle, defining carefully each term used. 5 Question 1. [Marks 28] An unmarked police car P is, travelling at the legal speed limit, v P, on a straight section of highway. At time t = 0, the police car is overtaken by a car C, which is speeding

More information

The Gravitational Field

The Gravitational Field The Gravitational Field The use of multimedia in teaching physics Texts to multimedia presentation Jan Hrnčíř jan.hrncir@gfxs.cz Martin Klejch martin.klejch@gfxs.cz F. X. Šalda Grammar School, Liberec

More information

This tutorial assumes that Visual3D has been installed and that a model has been created as described in Tutorial #1.

This tutorial assumes that Visual3D has been installed and that a model has been created as described in Tutorial #1. C-Motion Online Documentation Visual3D : Tutorial : Data Visualization Objectives (# 1318) This tutorial assumes that Visual3D has been installed and that a model has been created as described in Tutorial

More information

Spectrum and Power Measurements Using the E6474A Wireless Network Optimization Platform

Spectrum and Power Measurements Using the E6474A Wireless Network Optimization Platform Application Note Spectrum and Power Measurements Using the E6474A Wireless Network Optimization Platform By: Richard Komar Introduction With the rapid development of wireless technologies, it has become

More information

Microsoft Access 2000 for Windows Handout: 3 Academic Computing Support Information Technology Services Tennessee Technological University December 2001 1. Creating a new database In this exercise, we

More information

EDMONDS COMMUNITY COLLEGE ASTRONOMY 100 Winter Quarter 2007 Sample Test # 1

EDMONDS COMMUNITY COLLEGE ASTRONOMY 100 Winter Quarter 2007 Sample Test # 1 Instructor: L. M. Khandro EDMONDS COMMUNITY COLLEGE ASTRONOMY 100 Winter Quarter 2007 Sample Test # 1 1. An arc second is a measure of a. time interval between oscillations of a standard clock b. time

More information