RealtimePPP using EUREF and IGS Networks
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1 RealtimePPP using EUREF and IGS Networks Georg Weber 1) Leos Mervart 2), Peter Neumaier 1), Andrea Stürze 1) 1) Federal Agency for Cartography and Geodesy, Frankfurt am Main, Germany 2) Technical University Prague, Department of Geodesy, Czech Republic
2 Usage of Realtime GNSS Resources from EUREF & IGS Disseminated via NTRIP 68 Countries from latest 1000 User registrations Status March 25, 2010
3 EUREF & IGS: EnablingAccess to ReferenceFrame in Real-time Past: Providing coordinates and RINEX files from EPN sites for Coordinate estimation in post processing Today: Disseminating EPN & IGS observations streams and streams carrying orbit/clock correctors for Real-time Precise Point Positioning Network RTK
4 Real-time EUREF & IGS Service Provision Structure Administration Raw Data Derived Products System System System Operator Operator Operator NtripTracker NtripTracker NtripTracker DSL DSL DSL Mobile Mobile PI IP Mobile IP Reference Reference Reference Receiver Receiver Receiver NtripServer NtripServer NtripServer DSL DSL DSL Rover Rover Rover Receiver Receiver Receiver NtripClient NtripClient NtripClient Mobile Mobile PI IP Mobile IP WAAS Receiver NtripServer DSL Internet Primary NtripMonitor Backup NtripMonitor Primary NtripCaster Backup NtripCaster Primary Conversion I Backup Conversion I Primary Conversion II Backup Conversion II
5 Subversion software.rtcm-ntrip.org Open Source software development for Ntrip Concerns BNC, BNS, POSIX ntripclient/server/caster Includes bugtracker Wicki Server Hypertext System for Ntrip Software
6 BKG Ntrip Client (BNC) v2.1
7 Real-time PPP Monitoring of IGS Analysis Centers using BNC IGS/ESOC, COMBI + BNS N E H V TU Vienna, RTIGSMR + BNS DLR, RETICLE Geo++, GNSMART 1 m ESOC, RETINA + BNS EUREF/BKG/TUP, RTNet + BNS 24 hours Coming up: GFZ, GMV
8 IGS Combination
9 IGS Combination
10 IGS Combination
11 IGS Combination
12 IGS Combination
13 IGS Combination
14 IGS Combination
15 IGS Combination
16 IGS Combination
17 IGS Combination
18 PPP for Monitoring of Natural Hazard Horizontal Displacement: 10 cm
19 GNSS Receiver CONZ Real-time PPP during earthquake using RTNet by GPSS February 27, 2010 Earthquake Epicenter No post processing option in BNC at that time.
20 BNC, feeding an engine or a RINEX archive
21
22 PPP with EUREF & IGS Configuration BNC/PPP software on laptop. Communication with receiver via Blue Tooth. Wireless Internet connection via GPRS. Standardization RTCM SC104. Make PPP option with orbit/clock correctors part of the receiver firmware. Then: PPP with BNC to become redundant. Reference Systems Support IGS05/ITRF2005 ETRS89/ETRF2000 SIRGAS95/2000 NAD83 GAD94
23 GNSS Antenna Kinematic PPP Test Tractor on rails
24 PPP Test Bed Precision Agriculture Competing with RTK Networks? No!
25 Summary Since an RTCM standard for streaming GNSS data first became available in 2004, a steadily growing number of well distributed reference stations provide free real-time access to satellite observations. These global resources enable the real-time estimation and dissemination of correctors for broadcast orbits and clocks. Corrections can be encoded in new RTCM messages under development to match specifics of the so-called State Space Representation (SSR) approach. As a result, Open Data Policy networks like IGS and emerging client software complying with RTCM standards permit real-time Precise Point Positioning (PPP) world-wide in the public domain - until recently the sole activity of a very few service providers. This presentation describes efforts in the real-time PPP sector based on a premature RTCM standard and carried out in a cooperation of TUP and BKG. The major characteristics of its PPP server 'RTNet', an NTRIP-based stream dissemination system, and the PPP client program 'BNC' are presented. Introduced tools utilize the latest NTRIP version 2 standard for GNSS stream transport.
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