Fast coherent integration method for moving target detection with random PRI variation. Issue 1 (1st January 2020)

• Record Type: Journal Article
• Authors: Zhu, Weiqiang; Liu, Zhiling; Xu, Huajian
• Is Part Of: Electronics letters. Volume 56:Issue 1(2020)
• Page Start: 41
• Page End: 43
• Publication Date: 2020-01-01
• Subjects: Doppler radar -- radar signal processing -- fast Fourier transforms -- radar detection -- radar imaging -- object detection -- parameter estimation; pulse repetition interval‐staggered radar system -- random sampling -- complex coupling effects -- target parameter estimation -- coherent integration performance -- fast coherent integration detection method -- random azimuth sampling -- range migration -- range‐frequency reversal -- random phase fluctuation -- staggered PRI -- fast coherent integration method -- moving target detection -- random PRI variation -- coherent integration problem; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2019.3084
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : This Letter addresses the coherent integration problem for the moving target detection in a pulse repetition interval (PRI)‐staggered radar system. Due to the random sampling, the complex coupling effects between range and azimuth will severely degrade the target parameter estimation and coherent integration performance. To deal with this issue, a fast coherent integration detection method with random azimuth sampling is proposed, where range migration is firstly compensated by applying the range‐frequency reversal transform. Then, the random phase fluctuation caused by the staggered PRI can be efficiently removed by applying the non‐uniform FFT technique. Finally, a moving target can be well focused. Simulated results are provided to validate the effectiveness of the proposed algorithm.