An omega-k algorithm for SAR bistatic systems

Bistatic SAR uses separate flying transmitter and receiver platforms. There are two principle configurations : spatial invariant case, in which velocity vectors are equal, and spatial variant case.. in which velocity vectors are not equal. ONERA and DLR performed experimental flights oil the spatial invariant case in february 2003 [1]. The experiment was conducted using the X-band front ends that are compatible in terms of frequency (oil a 100 MHz-Wide band). Estimation and compensation of the phase drift between the transmitter and the receiver master oscillator was presented in [1]. Until flow, data have been processed with a back projection algorithm. This article investigates ail Omega-K aloorithm - or Range Migration Algorithm - for bistatic SAR systems in spatial invariant cases. First results of this algorithm oil real data are included.