Multistatic Synthetic Aperture Radar Image Formation

Abstract—In this paper, we consider a multistatic synthetic aperture radar (SAR) imaging scenario where a swarm of airborne antennas, some of which are transmitting, receiving or both, are traversing arbitrary flight trajectories and transmitting arbitrary waveforms without any form of multiplexing. The received signal at each receiving antenna may be interfered by the scattered signal due to multiple transmitters and additive thermal noise at the receiver. In this scenario, standard bistatic SAR image reconstruction algorithms result in artifacts in reconstructed images due to these interferences. In this paper, we use microlocal analysis in a statistical setting to develop a filtered-backprojection (FBP) type analytic image formation method that suppresses artifacts due to interference while preserving the location and orientation of edges of the scene in the reconstructed image. Our FBP-type algorithm exploits the second-order statistics of the target and noise to suppress the a...

• Type: Journal
• Year: 2010
• Where: TIP
• Authors: V. Krishnan, J. Swoboda, Can Evren Yarman, Birsen Yazici
• Keywords: Bistatic Sar Image, Image, SAR Image Reconstruction, TIP 2010