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 |