SAR Constellation Technical Specs
Umbra produces the highest resolution SAR data ever offered commercially.
Imaging Modes
Spotlight
Standard Scene Size
4 x 4km footprint
Ground Plane Resolution
25cm - 2m
Stripmap*
Swath
6 - 20km
Ground Plane Resolution
1 - 2m
Extended Dwell*
Standard Scene Size
4 x 4km footprint
Ground Plane Resolution
25cm - 2m
Scanning*
Scan Area
Arbitrary polygon
Ground Plane Resolution
1 x 10m
*Coming Soon
Satellite Specs
| Attribute | Value |
|---|---|
| Radar Antenna Size | 11.3m^2 |
| Radar Bandwidth | 1,200 MHz |
| Radar Power | Up to 500w peak power |
| Mass | ~70kg |
| Launch Volume | Sub-ESPA |
Initial Orbital Specs
| Attribute | Value |
|---|---|
| Altitude | 450 - 600km |
| Inclination | 97.4 degrees (polar orbit) |
| Nominal Orbital Height | 517km |
| Ground Track Repeat | 1 week |
Collection Capability
| Attribute | Value |
|---|---|
| Polarization | HH or VV |
| Ground Range | 170 - 1100km on either side of flight path |
Look Geometry
| Attribute | Value |
|---|---|
| Squint Angle | 45º to 135º |
| Grazing Angle | 20º to 70º |
| Look Direction | Left or Right |
Revisit Rate
Estimated average revisit rates by region and type:
| Region | Near term | Objective Constellation | ||
|---|---|---|---|---|
| Coherent Revisit | Mean Time To Access | Coherent Revisit | Mean Time To Access | |
| Arctic & Antarctic | <8 hrs | <2.5 hrs | <1 hrs | <10 mins |
| Mid-Latitude | <3 days | <8 hrs | <8 hrs | <50 mins |
| Equatorial | <3 days | <14 hrs | <9.5 hrs | <95 mins |
