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Acta Aeronautica et Astronautica Sinica ›› 2023, Vol. 44 ›› Issue (13): 327934-327934.doi: 10.7527/S1000-6893.2022.27934

• Electronics and Electrical Engineering and Control • Previous Articles     Next Articles

Design of anti-SDIF radio frequency stealth signal and echo signal processing technology based on compressed sensing

Jinwei JIA, Limin LIU(), Zhuangzhi HAN, Hui XIE   

  1. Department of Electronic and Optical Engineering,Shijiazhuang Campus,Army Engineering University,Shijiazhuang 050003,China
  • Received:2022-08-18 Revised:2022-09-21 Accepted:2022-12-15 Online:2023-07-15 Published:2022-12-22
  • Contact: Limin LIU E-mail:2994289664@qq.com

Abstract:

Radio Frequency (RF) stealth anti-sorting technology can improve the battlefield survival rate of radar, and is one of the research hotspots in the field of radar. In this paper, the signal design principle of anti-SDIF sorting is studied based on the main sorting algorithm of Sequence Difference histogram (SDIF). On this basis, a piecewise linear chaotic system with interval number parameterization is designed based on random disturbance, and a method of using chaotic system to modulate the signal pulse repetition period with wide interval is proposed. Then, considering that it is difficult to use the traditional signal processing method to deal with the highly random anti-sorting signal designed in this paper in terms of velocity measurement, the compressed sensing technology is used to process the echo of the signal designed in this paper and to solve the velocity and distance of the detection target. Finally, simulations are carried out to verify the correctness of signal design principle, the performance of chaotic system, the anti-sorting performance of the designed signal, and the recovery and reconstruction performance of the signal by compressed sensing. The results show that the signal design principle presented in this paper can be used for signal design, the performance of interval number parametric piecewise linear chaotic system is better than that of the classical one-dimensional chaotic system, the anti-sorting signal modulated by the chaotic system can achieve anti-SDIF sorting, and the anti-sorting signal designed in this paper can be processed to obtain the speed and distance of the target.

Key words: radar countermeasure, radio frequency stealth, anti-sorting, signal design, chaotic system, compressed sensing, signal processing

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