Selex Galileo Spazio Strumenti per il monitoraggio dell ambiente da piattaforma aerea e satellitare

Transcription

1 Selex Galileo Spazio Strumenti per il monitoraggio dell ambiente da piattaforma aerea e satellitare Settimana UNESCO DESS 2009: Città e Cittadinanza Milano, 9 Novembre 2009

2 Selex Galileo Spazio fnei programmi ASI, ESA e NASA 10/11/ pictures credits: ASI / ESA/ NASA

3 Selex Galileo Spazio nel Programma METOP di EUMETSAT monitoraggio dell ozono (1/2) GOME (Global Ozone Monitoring Equipment) Status GOME I in flight onboard ERS 2 (1995) GOME II in flight onboard METOP Ref: /11/ The instrument has been developed for ESA / EUMETSAT in co-operation with CNR Bologna Function GOME is an across-track scanning optical spectrometer, covering the range nm; this spectral range is split into four channels. GOME's task is to sense the sunlight being reflected or scattered in the Earth's atmosphere and at its surface. The measured spectrum contains absorption features, which can be used to derive quantitative information on the atmospheric gases (ozone, others).

4 Selex Galileo Spazio nel Programma METOP di EUMETSAT monitoraggio dell ozono (2/2) GOME (Global Ozone Monitoring Equipment) Status GOME I in flight onboard ERS I. GOME II FMs delivered, FM1 in flight (METOP A) Key Technologies/Features 4 independent channels plus additional channels for polarization Linear photodiodes focal planes Spectrometry by dispersion prism & holographic gratings Accurate measurement of incoming light polarization (GOME II) Spectral Resolution nm Built in ICU functions Mass 67 kg (GOMEII) pictures credits: ESA/EUMETSAT 10/11/2009 4

5 Selex Galileo Spazio nella Missione ADM/AEOLOUS ADM/AEOLUS Mission (2009) ESA mission for 3D wind measurement with global Earth coverage, accuracy > 2 m/s The ADM Instrument is ALADIN (a Direct Detection Doppler Wind Lidar) Ref: Galileo Avionica contribution: Laser Transmitter Assembly (TXA), an all-solid-state laser source. PhotoVoltaic Assembly ADM-AEOLUS mission credits: ESA AOES Medialab ALADIN credits: ESA Characteristics Laser Material:Nd-YAG Wavelength: (1.06) µm Pulse Energy: µm; µm Pulse Length:15 ns Pulse Repetition Rate:100 Hz (burst mode) Single Longitudinal and near single Transverse Mode Frequency tunable (> µm) Mass: 52 kg - Power: 460 W AVG ALADIN PLH unit 10/11/2009 5

6 Selex Galileo Spazio nella Missione GMES Sentinel 3 GMES S3 Mission (2012) S3 mission is devoted to provision of operational oceanographic and land services Ref.: Credits ESA Galileo Avionica contribution to S3: Sea and Land Surface Temperature Radiometer (SLSTR), which is an enhanced Radiometer based on ATSR-family (Along-Track Scanning Radiometer), designed for ocean and land-surface temperature measurement. Key Technologies/Features Dual conical scanning imager (along track) Double scanning mechanism for very wide swath Swath width: 750 Km 9 channels, from VIS to TIR Accurate calibration with two black bodies and Sun Spatial resolution: VIS-SWIR 500m, MWIR-TIR 1000 m Credits: Thales Alenia Space 10/11/2009 6

7 Selex Galileo Spazio nella Missione EarthCARE di ESA E-CARE Mission (2013) ESA/JAXA mission for studying the interactions between cloud, radiative and aerosol processes that play a role in climate regulation. Ref: E-CARE mission credits: ESA Galileo Avionica contribution: Laser Transmitter Assembly (TXA), an allsolid-state power laser source for the ATmospheric backscattered LIDar (ATLID) Electronic Power Conditioner (EPC) for W- band EIK (1.5 KW) Characteristics Laser TxA design based on ADM Aladin TxA Laser Material: Nd-YAG Wavelength: (1.06) µm Pulse Energy: µm Pulse Length: < 30 ns Pulse Repetition Rate: 74 Hz Single Longitudinal and near single Transverse Mode Frequency tunable (> µm) Mass: 65 kg (include harness) Power: 300 W AVG ATLID PLH unit 10/11/2009 7

8 Selex Galileo Spazio nella Missione PRISMA di ASI PRISMA (2011) PRISMA (PRecursore IperSpettrale della Missione Applicativa) is a small mission (<500 kg) for Earth Observation (environmental monitoring and risk management) under development for the Italian Space Agency (ASI). Status: currently Phase C/D Galileo Avionica contribution to PRISMA: Optical payload made by an Hyperspectral camera and a Panchromatc camera PhotoVoltaic Assembly (PVA) and Power Control & Distribution Unit (PCDU) for the S/C AA-STR Autonomous Star tracker for satellite attitude control The Team: PRISMA is a small mission led by Carlo Gavazzi Space (responsible for the satellite) with Galileo Avionica responsible for the Hyperspectral payload. P/L main features: Hyperspectral camera (prism based) Spectral band VNIR ( nm) SWIR ( nm) VNIR/SWIR GSD = 30 m SWATH = 30 Km Spectral resolution ~ VNIR & SWIR < 10 nm Aperture diameter = 210 mm Passive cooling PAN camera Spectral band nm PAN GSD = 5 m 10/11/2009 8

9 Cos è l osservazione iperspettrale del territorio? 10/11/2009 9

10 Camera Iperspettrale avionica SIM.GA

11 Selex Galileo Spazio: camera iperspettrale SIM.GA: The instruments can be used as static camera, using a scanning platform, synchronised with the image acquisition, when the linear platform movement, as on aircraft, needed for pushbroom is not possible. 10/11/

12 Selex Galileo Spazio: caratteristiche della camera SIM.GA VNIR Spectrometer SWIR Spectrometer Spectral Range nm nm Spectral Sampling 1.2nm 5.8nm Spectral bands Spatial pixels IFOV per pixel 0.7mrad 1.33mrad FOV ±19.8 ± m 1.33m 700m 425m Digital resolution 12 bit 14 bit Operating Frame Rate 54 Hz 27 Hz Operating Data Rate 54MB/s 4.2MB/s Storage Capacity Autonomy H/v 200GB 1h 27s Optical Head 430x250x kg Electronics 483x267x kg Power 700 W (peak) 600 W (main) 10/11/

13 Selex Galileo Spazio: installazioni di SIM-GA SIM.GA > 60 flying ours on 4 types of aircraft: Ultra-light ULM-FOLDER (UNIFI Italy 2009) Ultra-light Allegro 2000 (KELL Italy 2007) CASA 212 (CGR Italy 2005) CASA 212 (INTA Spain 2007) VULCANAIR-P68 Viator (TELAER Italy ) 10/11/

14 Applicazaioni della Tecnologia Iperspettrale 10/11/

15 Selex Galileo Spazio: campagne di volo con SIM.GA SIM.GA DEMO flight 15 Dec The system was embarked on a CASA 212 plane and flown over Tuscany coastal area. Contemporary on-ground reference measurements were carried out for data validation and calibration. SIM.GA July-August 2006 The system was embarked on a Light Aircraft Allegro 2000 and flown on Lazio and Tuscany summer wildfires. The campaign was carried out under the ESA- AIRFIRE program). SIM.GA April-September 2007 The system was embarked on a CASA plane and flown over Spain and Boredeaux (F) areas. The campaign was carried out under the ESA- CEFLES2 program). 10/11/ Hot spots and hot burned areas are discriminated along the fire front Calcite Chlorite Illite-Smectite Illite Smectite HYPER Recent Eternit Altered Eternit K line allows flame detection also in smoke covered pixels (white arrow) AHS

16 HYPER data processing: Flow Diagram SIM-GA HYPER data Auxiliary & Ground data Key Data parameters Calibration L1 Radiance Data Atmospheric compensation L2 Reflectance Inversion algorithms L3 Products L0 Raw Data Radiance Validation on test data DEM data SIMGA INS/GPS data Sync./Time tag resampling Geocoding IGM & SCA outputs Warping & resampling Spectral DB Auxiliary data PROCESSING CHAIN L1c Radiance GeoCoded. L2c Reflectance GeoCoded L3c Geo-products 10/11/

17 HYPER Level 0 Processing 10/11/

18 HYPER Level 1 Processing Processing from DN to Radiance 10/11/

19 Geocoding & Georectification 10/11/

20 Geocoding processing Raw Ortogeoref. Coregistered 3D 10/11/

21 SIM.GA VNIR Camera Images Target Spectrum Example of Camera VNIR Images (reconstructed RGB) 10/11/

22 SIM.GA Camouflage Identification Images in the SWIR bands allow the identification of small targets not visible in the visible band. Difference of Spectral Signature between grass and green painted panel True Color VNIR Channel False Color SWIR Channel (R:621;G:569; B:511) (R:1312;G:1634;B:2038) 10/11/

23 SIM.GA Anomaly detection & Spec.Matching Parallel implementation algorithms real-time RX (anomaly detection) off-line CEM (spectral identification) 10/11/

24 SIM.GA Fire Detection Image VNIR true-color Image SWIR false color MARINA DI PISA Through the combination of VNIR and SWIR channels FIRE Detection is possible. A Thermal Anomaly has been detected. The Potassium (K) emission ( 760 nm) permits to discriminate flaming phase from that of smoldering phase. 10/11/

25 Examples of Level 3 Products Hot spots and hot burned areas are discriminated along the fire front Asbestos Pollution K line allows flame detection also in smoke covered pixels (white arrow) Recent Eternit Altered Eternit Forest Fire Mapping Calcite Chlorite Illite-Smectite Illite Smectite Soil Mineralogy 10/11/

26 SIM.GA On ground Application 10/11/

27 SIM.GA On ground Application Santa Maria Novella 100% calcite Ground-based SIM-GA 50% calcite 50% gypsum 100% gypsum Marble historical buildings deterioration assessment 10/11/