TSC is developing Space-Time Adaptive Processing (STAP) algorithms for application to both space and airborne platforms. TSC is supporting the Air Force Research Laboratory on the TechSat 21 Microsatellite Program, which will employ a novel distributed aperture concept to perform taskable mapping, surveillance and other missions. STAP is a critical component of the radar design for canceling interference from clutter and jamming. TSC is also developing new STAP concepts for next generation airborne surveillance platforms under contract to Northrop Grumman. For both of these efforts, a STAP analysis software tool, originally developed under TSC IR&D funding is being used to analyze the performance of various radar waveforms and antenna configurations for stressing operational scenarios.