Channel pre-distortion compensation techniques in SAR echo simulator

摘要

SAR echo simulator plays an important role in space-borne SAR development. As it uses a wide signal bandwidth, the LFM signal is affected in the transmit and receive channel because of the non-linear characteristics. This paper focuses on the LFM signal channel pre-distortion compensation in the SAR echo simulator, and the concrete implementation steps in time-domain compensation are given. This proposed technique is of reliable performance and is used in the actual spaceborne SAR echo simulator.