Multi-Phase Center SAR Processing for Foliage Canopy Suppression

Period of Performance: 05/06/2002 - 08/06/2004


Phase 2 STTR

Recipient Firm

Technology Service Corp.
962 Wayne Avenue Array
Silver Spring, MD 20910
Firm POC
Principal Investigator

Research Institution

SRI International
333 Ravenswood Avenue Mail stop: 306-17
Menlo Park, CA 94025
Institution POC


The capability of airborne SARs to perform foliage penetration is severely limited by the strength of the foliage canopy return. The capability exists for enhancing the detection of selected targets hidden beneath the foliage canopy through the use of multi-phase center (aperture) data. The objective of this Phase II effort is to demonstrate three innovative algorithms to mitigate the effect of the foliage canopy return with multi-aperture data. The three new algorithms to be studied by the Technology Service Corporation/SRI International team include elevation nulling, advanced IFSAR processing and volumetric imaging. The techniques will focus on the use of spatial adaptive processing, extended complex indicated angle processing and the time domain back projection algorithm. During the Phase II effort, TSC/SRI will refine their algorithms through analysis, single-pixel simulations and the processing of synthetic SAR images. Following these refinements, the robust algorithms will be applied to actual radar data to provide enhanced SAR imagery that demonstrates the suppression of the foliage canopy return.