Multistatic Scenarios for a GPS SAR System

This paper presents research results in space-surface multistatic synthetic aperture radar (SS-MSAR) with non-cooperative GPS satellites. The effect of the system´s geometry is investigated. We will show that in SS-MSAR, the spatial resolution depends on the geometry of the system, i.e. satellite-receiver-target positions relative to each other. General ambiguity function (GAF) and the point spread function (PSF) are defined in our case in a 3D case corresponding to our study. These criteria are then computed, and compared, for several scenarios including one (bistatic case) to three emitters (multistatic case).