Custom SAR imagery products are available to users by submitting new acquisition tasking requests using either the Capella Console or Capella API. Below is a table of the available parameters.
Imaging Parameter |
Description |
Units |
Minimum |
Maximum |
Window Open |
The earliest user-defined date when acquisition can occur. Image acquisition can begin any time after the Window Open time up to the Window Close time. |
Date Time |
n/a |
n/a |
Window Close |
The latest user-defined date when acquisition can occur. Image acquisition must occur no later than the Window Close time which effectively sets the tasking request expiration date. |
Date Time |
n/a |
n/a |
Collection Time |
The user-defined time when acquisition can occur. Image acquisition can be set to occur only at night (6pm to 6am local time), during the day (6am to 6pm local time), or anytime. In the API, this parameter is called localTime. |
Integer | n/a |
n/a |
Tasking Tier |
The scheduling importance of the new acquisition request (e.g. Routine, Urgent, Priority, Standard, or Flexible).
|
String |
n/a |
n/a |
Observation Direction |
Whether spacecraft is looking Left or Right with respect to its velocity vector during image acquisition. Also available for Standard and Extended products tasking. |
String |
n/a |
n/a |
Orbit State |
Whether the spacecraft is on the Ascending (South to North) or Descending (North to South) orbit during image acquisition. Also available for Standard and Extended products tasking. |
String |
n/a |
n/a |
Look Angle Minimum |
Minimum angle between the sub-satellite point and the collect center point from the satellite to the target. Based on the full accessible look angle range of the Capella radar the smallest possible look angle is 5°. |
Degrees |
5 |
50 |
Look Angle Maximum |
Maximum angle between the sub-satellite point and the collect center point from the satellite to the target. Based on the full accessible look angle range of the Capella radar the largest possible look angle is 50°. |
Degrees |
5 |
50 |
Imaging Mode |
The radar system imaging mode (e.g. spotlight, sliding spotlight, stripmap). |
String |
n/a |
n/a |
Scene Length |
Desired image scene length. This parameter is only customizable for the Stripmap imaging mode. |
Kilometers |
5 |
200 for Strip |
Scene Width |
Desired image scene width. This parameter is only customizable for the Stripmap imaging mode. |
Kilometers |
5 |
10 for Strip |
Ground Range Resolution Minimum |
Minimum ground range resolution of the resulting image. |
Meters |
0.4 for Spot 0.7 for Site 1.1 for Strip |
3.1 for Spot 5.0 for Site 11.5 for Strip |
Ground Range Resolution Maximum |
Maximum ground range resolution of the resulting image. |
Meters |
0.4 for Spot 0.7 for Site 1.1 for Strip |
3.1 for Spot 5.0 for Site 11.5 for Strip |
Azimuth Resolution Minimum |
Minimum azimuth resolution of the resulting image. Modification of this parameter impacts the resolution of the SLC and GEO product types. |
Meters |
0.5 for Spot 1.0 for Site 1.2 for Strip |
3.1 for Spot 5.0 for Site 11.5 for Strip |
Azimuth Resolution Maximum |
Maximum azimuth resolution of the resulting image. Modification of this parameter impacts the resolution of the SLC and GEO product types. |
Meters |
0.5 for Spot 1.0 for Site 1.2 for Strip |
3.1 for Spot 5.0 for Site 11.5 for Strip |
Number Of Looks |
Number of looks used for multi-look processing in geocoded products. Users can select a number of looks smaller than Standard and Extended products. |
Integer |
1 for Spot 1 for Site 1 for Strip |
9 for Spot 5 for Site 1 for Strip |
Grazing Angle Minimum |
Minimum angle between the tangent plane to the Earth's surface and the ling of sight of the satellite as seen from the collect center point. Based on the full accessible look angle range of the Capella radar the smallest possible grazing angle is 30°. This parameter is API only. |
Degrees |
30 |
85 |
Grazing Angle Maximum |
Maximum angle between the tangent plane to the Earth's surface and the ling of sight of the satellite as seen from the collect center point. Based on the full accessible look angle range of the Capella radar the largest possible grazing angle is 85°. This parameter is API only. |
Degrees |
30 |
85 |
Azimuth Angle Minimum |
Minimum clockwise angle with respect to North in a topocentric geodetic ENZ coordinate system from the target to the satellite. This parameter is available only in the API and the values can wrap around (i.e. minimum of 340 and maximum of 20). This parameter is API only. |
Degrees |
0-360 |
0-360 |
Azimuth Angle Maximum |
Maximum clockwise angle with respect to North in a topocentric geodetic ENZ coordinate system from the target to the satellite. This parameter is available only in the API and the values can wrap around (i.e. minimum of 340 and maximum of 20). This parameter is API only. |
Degrees |
0-360 |
0-360 |