Mastertitelformat bearbeiten CEOS 2010 SAR Performance of TerraSAR-X Mission with Two Satellites Benjamin Bräutigam, Paola Rizzoli, Carolina González, Donata Polimeni , Dirk Schrank, Marco Schwerdt German Aerospace Center (DLR) Microwaves and Radar Institute
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Mastertitelformat bearbeiten
CEOS 2010
SAR Performance of TerraSAR-X Mission with Two SatellitesBenjamin Bräutigam, Paola Rizzoli, Carolina González, Donata Polimeni, Dirk Schrank, Marco SchwerdtGerman Aerospace Center (DLR)Microwaves and Radar Institute
2CEOS 2010
StripMap Mode SpotLight Mode ScanSAR Mode
TerraSAR-X:• German Earth observation SAR satellite • X-band @ 9.65 GHz• 514 km dusk/dawn orbit• Multi-mode highly flexible operation• Public Private Partnership (PPP)• Launched on June 15 2007
Resolution: 1.5 m 1.5 mScene Size: 10 km x 5..10 km
Resolution: 3.3 m 3.3 mScene Size: 30 km x 50 km
Resolution: 17 m 18 mScene Size: 100 km x 150 km
3CEOS 2010
TerraSAR-X SAR System Parameters
Satellite TelemetryOrbit/attitude data (Doppler statistics)
Instrument temperatures
SAR Image ParametersRange of scene size and incidence angles
Resolution (geometric and radiometric)
Performance Parameters (PSLR/ISLR, NESZ)
4CEOS 2010
4.8 m
0.75
m
TerraSAR-X – Beam Specification
10 kmSingleDual
SpotlightHighRes
91 full perf122 total
Spotlight
15 km (15°-50°)13,5 km (50°-60°)
DualStripmap24 full perf54 total
Stripmap Near / Far
30 km (15°-50°)27 km (50°-60°)
SingleStripmapScanSAR
12 full perf27 total
Stripmap
Swath WidthPolarisationSAR Modes# of BeamsBeam Type
Over 1000 product variants -> Performance status over a sample!
Active phase antenna array
...1 2 3 12
12 panels in theazimuth direction
32 sub-arrayantennas per panel...
Electronic steering and shaping of acquisition beams (elevation and azimuth):
5CEOS 2010
Doppler Statistics
99% of the acquisitions concentrated inside ± 120 Hz
Mid-Range Doppler Plot
-3500
-3000
-2500
-2000
-1500
-1000
-500
0
500
1000
1500
01.01.2008
01.03.2008
01.05.2008
01.07.2008
01.09.2008
01.11.2008
01.01.2009
01.03.2009
01.05.2009
01.07.2009
01.09.2009
01.11.2009
01.01.2010
Date
Dop
pler
in [H
z]
HH Max HH MinVV Max VV MinHV Max VH Min
Maximum and minimum of mid-swath Doppler Centroid for each datatake / polarization channel