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|TanDEM-X Science Service System|
|Title||SAR maritime monitoring via a microsatellite constellation addition to an existing SAR mission|
|Investigator||Peterson, Erica - University of Toronto, Institute for Aerospace Studies|
|Summary||The objectives of the microsatellite mission concept are to observe an area of ocean -- either through bistatic, multistatic, or repeat-pass configurations, identify maritime vessels in the imagery, to combine the imagery to derive as much information about the vessels as possible, including size and velocity estimations, and to potentially also fuse this information with additional sources of Earth Observation data. TerraSAR-X data will be used in order to validate and test the developed algorithms for onboard processing of the microsatellite SAR data. The possibility of combining data from an existing SAR mission (TerraSAR-X) and products derived from microsatellites in near real-time will also be tested.
The following pieces of software have been developed for this project, and will be used to process the SAR data:
1) A wavelet-based speckle filtering method with constant false alarm rate (CFAR) target detection, for detecting ships and other man-made objects at sea.
2) A Fourier-domain image registration method with subpixel accuracy, suitable for registering bistatic or multistatic SAR imagery over various types of low-relief topography, such as coastline.
3) A feature-based image registration method suitable for registration of multiple bistatic or multistatic open-ocean SAR images, in which detected targets are treated as control points.
In addition, operating parameters for the microsatellite mission concept will be analyzed, to determine optimal microsatellite constellation design.
We are requesting approximately 20 image acquisitions over three geographical locations where there is significant maritime traffic. Imagery should be wide-swath, such as the new WSC mode. Other ScanSAR and Stripmap imagery is also useful for comparison.
Project deliverables include an analysis of the SAR image processing software, and a mission concept journal paper, which will be submitted to an appropriate refereed journal.
This research is funded through the PI's university start-up grant.
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