Iterative DEM retrieving from multi-baseline interferometric SAR with MIMO

In the recent years, there has been growing interest in exploiting multi-baseline synthetic aperture radar interferometry (MB-InSAR) to solve layover effects and phase unwrapping problem of long baseline. In this paper we propose a novel system concept for MB-InSAR based on Multiple-Input Multiple-Output (MIMO) configuration. Alamouti space-time coding scheme based on two transmitters is introduced into multi-baseline InSAR system. We investigate its performance and processing features based on our space-borne multi-baseline InSAR simulator and iterative multi-baseline data fusion algorithm. The simulation results shows that the received signal to noise ratio (SNR) and the precision of iterative multi-baseline data fusion algorithm are significantly improved under Alamouti scheme.