Hybrid Echo Data Generation of Natural Scenes Including Moving Targets for Low Frequency Ultra-wideband One-stationary Bistatic SAR

Compared with the traditional monostatic synthetic aperture radar (SAR), the low frequency (LF) ultra-wideband (UWB) one-stationary bistatic SAR (OS-BiSAR) has the advantages of flexible configuration, difficulty to intercept, anti-jamming, and strong penetrating ability, thus it has the broader application prospect. However, the measured echo data of the LF UWB OS-BiSAR is still less, especially the measured echo data of the moving targets. Thus, the hybrid echo data generation of the natural scenes including the moving targets for the LF UWB OS-BiSAR is proposed. First, the inverse range-Doppler (RD) algorithm is used to generate the natural static scene echo data from the real SAR image. After superimposing the echo data of moving targets, the mixed echo data containing both the natural static scene and the moving targets is obtained. This method alleviates the shortage of the measured echo data of the LF UWB OS-BiSAR. Simulation experiments are shown to demonstrate the validity of the present method.