An Adaptive Transmitting Scheme for Interrupted Sampling Repeater Jamming Suppression

Sensors

Chao Zhou¹  Feifeng Liu¹  Quanhua Liu¹ 

[1] Radar Research Laboratory, School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China;

关键词: interrupted sampling repeater jamming;    digital radio frequency memory;    radar waveform design;    jamming perception;    adaptive transmitting;   

DOI  :  10.3390/s17112480

来源: DOAJ

【 摘 要 】

The interrupted sampling repeater jamming (ISRJ) based on a digital radio frequency memory (DRFM) device is a new type of coherent jamming. This kind of jamming usually occurs as main-lobe jamming and has the advantages of low power requirements and easy parameter adjustment, posing a serious threat to the modern radar systems. In order to suppress the ISRJ, this paper proposes an adaptive transmitting scheme based on a phase-coded signal. The scheme firstly performs jamming perception to estimate the jamming parameters, then, on this basis, optimizes the waveform with genetic algorithm. With the optimized waveform, the jamming signal is orthogonal to the target echo, thus it can be easily suppressed with pulse compression. Simulation experiments are performed to verify the effectiveness of the scheme and the results suggest that the peak-to-side-lobe ratio (PSR) and integrated side-lobe level (ISL) of the pulse compression can be improved by about 16 dB and 15 dB, respectively, for the case where the jamming-to-signal ratio (JSR) is 13 dB.

【 授权许可】

Unknown