Systems Engineering and Electronics ›› 2022, Vol. 44 ›› Issue (3): 771-776.doi: 10.12305/j.issn.1001-506X.2022.03.08

• Electronic Technology • Previous Articles     Next Articles

Reconstruction method of PCM signal intermittent transmitting and receiving echo in radiation simulation

Ailun XIE, Xiaobin LIU*, Feng ZHAO, Xiaofeng AI, Shunping XIAO   

  1. College of Electronic Science, National University of Defense Technology, Changsha 410073, China
  • Received:2020-12-07 Online:2022-03-01 Published:2022-03-10
  • Contact: Xiaobin LIU

Abstract:

The use of intermittent transmitting and receiving in radiation simulation can effectively solve the problem of mutual coupling of the transmitting and receiving signals, but the signal loss caused by the intermittent transmitting and receiving will cause the increase of the range image sidelobe after pulse compression, thereby affecting the resolution of the target. In order to solve this problem, a pulse code modulation (PCM) signal echo reconstruction method based on the matched filter transform base is proposed. This paper derives the output of PCM signals after intermittent transmitting and receiving through a matched filter, and uses the sparse characteristics of intermittent transmitting and receiving of PCM signals, and combines the theory of compressed sensing to study the accurate reconstruction method of intermittent transmitting and receiving echo based on the matched filter change base. The simulation results show that the reconstruction method can accurately restore the range profile, and the reconstruction probability of the signal to noise ratio greater than 10 dB reaches 95%, which verifies the feasibility and correctness of the method analyzed in this paper.

Key words: radiation simulation, intermittent sampling, compressed sensing, echo reconstruction

CLC Number: 

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