Abstract:

Considering the diversity of target scattering characteristics with different observation condition and signal frequency is ignored in traditional simulation of synthetic aperture radar (SAR) echo, a high-precision simulation method based on finite-difference time-domain method (FDTD)technology is proposed in this paper. In addition, the strategy and scheme of parallel simulation based on server are presented. The physical forming procedure of SAR echo, including the transmission of chirp signal, the interaction with target and the receiving of echo, were accurately simulated by using the proposed method and then obtain high-precision SAR echo. Through simulation experiments of space-spectrum, time-spectrum and image results, the validity and effectiveness of the proposed method is verified.