Transmitting Pulse Encoding for Beyond-PRT Retransmitting Deception Jamming Detection in Spaceborne Synthetic Aperture Radar (SAR)

Ruijia Wang; Sun Bing; Xing Wang; Siyi Cheng

doi:10.3390/s18051666

Transmitting Pulse Encoding for Beyond-PRT Retransmitting Deception Jamming Detection in Spaceborne Synthetic Aperture Radar (SAR)

Sensors (Basel). 2018 May 22;18(5):1666. doi: 10.3390/s18051666.

Authors

Ruijia Wang^{1

2}, Sun Bing³, Xing Wang⁴, Siyi Cheng⁵

Affiliations

¹ Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038, China. wangrj@buaa.edu.cn.
² School of Electronics and Information Engineering, Beihang University, Beijing 100084, China. wangrj@buaa.edu.cn.
³ School of Electronics and Information Engineering, Beihang University, Beijing 100084, China. arthdaka@buaa.edu.cn.
⁴ Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038, China. wangxing@afeu.edu.cn.
⁵ Aeronautics Engineering College, Air Force Engineering University, Xi'an 710038, China. csy@afeu.edu.cn.

Abstract

Retransmitting deception jamming (RDJ) degrades and misleads the Synthetic Aperture Radar (SAR) image interpretation by forming false targets. The beyond-Pulse Repetition Time (PRT) RDJ enlarges the effective jamming area without constraining the jammer location to reduce the spaceborne SAR working effectiveness. In order to detect the beyond-PRT RDJ and enhance the working efficiency in electronic countermeasure environment, the transmitting pulse encoding method for use in spaceborne SAR is proposed based on the geometry and signal models of beyond-PRT RDJ. Optimum binary codes with maximum number of detection windows are determined by the encoding procedure. The detected area is found to be proportional to the code length and the encoding efficiencies of even and odd codes are analyzed. The simulation results validate the effectiveness of the transmitting pulse encoding method for beyond-PRT RDJ detection in spaceborne SAR.

Keywords: jamming detection; retransmitting deception jamming (RDJ); synthetic aperture radar (SAR); transmitting pulse encoding.