Synthetic Aperture Radar (SAR)
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Satellite specifications
| Satellite |
Band |
Frequency [GHz] |
Polarization |
Look direction |
Look angle [°] |
| ERS |
C |
5.3 |
vv |
R |
23 |
| JERS |
L |
1.275 |
hh |
R |
35.21 |
| Radarsat-1 |
C |
5.3 |
hh |
R |
10-60 |
| Envisat |
C |
5.331 |
hh,vv,hv,vh |
R |
15-45 |
| ALOS |
L |
1.270 |
hh,vv,hv,vh |
R |
8-60 |
| COSMO-SkyMed |
X |
9.6 |
hh,vv,hv,vh |
R,L |
20-60? |
| TerraSAR-X |
X |
9.65 |
hh,vv,hv,vh |
R,L |
15-60 |
| Radarstat-2 |
C |
5.405 |
hh,vv,hv,vh |
R,L |
18-50 |
| KOMPSAT-5 |
X |
9.66 |
hh,vv,hv,vh |
R,L |
20-55 |
| Sentinel-1 |
C |
5.405 |
hh,vv,hv,vh |
R |
20-46 |
| ALOS-2 |
L |
1.2575 |
hh,vv,hv,vh |
R,L |
8-70 |
| SAOCOM |
L |
1.275 |
hh,vv,hv,vh |
R,L |
18-50 |
| ICEYE |
X |
9.7 |
vv |
R,L |
10-35 |
Satellite orbits
| Satellite |
Altitude [km] |
Inclination [°] |
Period [min] |
Repeat cycle [days] |
| ERS |
785 |
98.52 |
100 |
35 |
| JERS |
568 |
97.7 |
96 |
44 |
| Radarsat-1 |
798 |
98.6 |
100.7 |
24 |
| Envisat |
800 |
98.55 |
100.6 |
35 |
| ALOS |
691.65 |
98.16 |
98.51 |
46 |
| COSMO-SkyMed |
619.6 |
97.86 |
97.1 |
16 |
| TerraSAR-X |
515 |
97.44 |
|
11 |
| Radarstat-2 |
798 |
98.6 |
100.7 |
24 |
| KOMPSAT-5 |
550 |
98.1 |
98.5 |
28 |
| Sentinel-1 |
693 |
98.2 |
98.7 |
12 |
| ALOS-2 |
628 |
97.9 |
97 |
14 |
| SAOCOM |
619.6 |
97.86 |
97.1 |
16 |
| ICEYE |
500-570 |
97.4 |
96 |
17 |
Constellations
| Constellation |
Satellite |
Launch |
End |
| ERS |
ERS-1 |
1991-07-17 |
2000-03-10 |
| ERS |
ERS-2 |
1995-04-21 |
2011-09-05 |
| JERS |
JERS-1 |
1992-01-01 |
1998-01-01 |
| Radarsat-1 |
Radarsat-1 |
1995-11-04 |
2013-03-29 |
| Envisat |
Envisat |
2002-03-01 |
2012-05-09 |
| ALOS |
ALOS |
2006-01-24 |
2011-05-12 |
| COSMO-SkyMed |
COSMO-1 |
2007-06-08 |
/ |
| COSMO-SkyMed |
COSMO-2 |
2007-12-09 |
/ |
| COSMO-SkyMed |
COSMO-3 |
2008-10-25 |
/ |
| COSMO-SkyMed |
COSMO-4 |
2010-11-06 |
/ |
| TerraSAR-X |
TerraSAR-X |
2007-06-15 |
/ |
| TerraSAR-X |
TanDEM-X |
2010-06-21 |
/ |
| Radarstat-2 |
Radarstat-2 |
2007-12-14 |
/ |
| KOMPSAT-5 |
KOMPSAT-5 |
2013-08-22 |
/ |
| Sentinel-1 |
Sentinel-1A |
2014-04-03 |
/ |
| Sentinel-1 |
Sentinel-1B |
2016-04-25 |
2021-12-23 |
| ALOS-2 |
ALOS-2 |
2014-05-24 |
/ |
| SAOCOM |
SAOCOM-1A |
2018-10-08 |
/ |
| SAOCOM |
SAOCOM-1B |
2020-08-30 |
/ |