Modeling of nonidealities in receiver front-end for a simulation of multistatic SAR system

Novel concepts for synthetic radar (SAR) systems are designed to use the potential of multiple transmit or/and receive front-ends. The DBF SAR, HRWS SAR or MIMO SAR improve the quality of the radar image using multiple receiver signals and adequate signal processing algorithms. The processing algorithms are developed with assumption of an ideal transmit and receive system. The effects that could occur in the transmitter or receiver front-end disturb the received signal and resulting Radar image. This paper is a contribution to the investigation of the influence of nonidealities of the SAR receiver. Presented are VKA-representation models of HRWS SAR receiver developed simulation considers also effects resulting from quantization and digital beamforming processing (DBF). The VKA-representation enables description of the receiver in a compact and simple way.