Systems Engineering and Electronics ›› 2024, Vol. 46 ›› Issue (6): 1855-1866.doi: 10.12305/j.issn.1001-506X.2024.06.04

• Electronic Technology • Previous Articles    

A joint optimization algorithm for transmitting waveform and mismatched filter against interrupted sampling repeater jamming

Qian LIU, Fengzhou DAI   

  1. School of Electronic Engineering, Xidian University, Xi'an 710071, China
  • Received:2022-11-27 Online:2024-05-25 Published:2024-06-04
  • Contact: Fengzhou DAI

Abstract:

Interrupted sampling repeater jamming (ISRJ) has a strong correlation with the transmitting signal, if the matched filtering processing is still adopted at the receiving end, multiple high-fidelity false targets with controllable quantity will be generated, which seriously affects the detection performance of radar. To solve the above problem, a joint optimization algorithm for transmitting waveform and receiving filter against the ISRJ is proposed, which takes into account the signal to noise ratio (SNR) loss under the mismatched filtering system, the constant modulus constraint of transmitting signal and the energy constraint of filter, to minimize the normalized peak of the interference signal after pulse compression, the ratio of the energy of the integral side lobe to main lobe and the interference to signal ratio of the output of the mismatched filter, the majorization-minimization (MM) method and the square iterative acceleration algorithm are adopted to accelerate the running speed of the proposed algorithm. The simulation results show that compared with other similar methods, the proposed algorithm can greatly shorten the running time and has better real-time performance on the basis of ensuring reliable anti-interference performance.

Key words: interrupted sampling repeater jamming (ISRJ), mismatched filter, majorization-minimization (MM), squared iterative method, constant modulus constraint

CLC Number: 

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