Joint SAR and communications: interrupted SAR signal processing

Abstract

Synthetic aperture radar (SAR) system and communication work in the same frequency band, SAR signal will be interfered by communication signal. In this paper, a method based on the combination of intermittent Interrupted SAR and communication is proposed to realize the simultaneous work of radar and communication without affecting each other, so as to realize the integration of radar communication. By analyzing the time domain characteristics and frequency domain characteristics of communication signals, the communication signal is a narrow-band signal in frequency domain, part of the bandwidth of the SAR working frequency band is given up for communication. At this time, the SAR signal is interrupted. The interrupted part of the SAR signal is recovered by linear prediction extrapolation to obtain a complete SAR signal, which solves the interference problem of the SAR system from communication and realizes integration. The effectiveness of this method is proved by SAR point target experiments.