Wideband-scaled Radon-Fourier transform for high-speed radar target detection

• Published in: IET radar, sonar & navigation Vol. 8; no. 5; pp. 501 - 512
• Main Authors: Qian, Li-Chang, Xu, Jia, Xia, Xiang-Gen, Sun, Wen-Feng, Long, Teng, Peng, Ying-Ning
• Format: Journal Article
• Language: English
• Published: Stevenage The Institution of Engineering and Technology 01.06.2014; The Institution of Engineering & Technology
• Subjects: broadband networks; Coherence; Coherence length; coherent integration method; coherent integration time; Fourier transforms; high‐speed radar target detection; Matched filters; Mathematical models; narrowband matched fllter; object detection; pulse duration; radar detection; radar echoes; Radon; Radon transforms; Scale effect; scale effect compensation; signal‐to‐noise ratio; SNR gain; SNR loss; Target detection; target speed; Transforms; wide signal bandwidth; wideband‐scaled Radon‐Fourier transform; WSRFT method; SNR gain; radar detection; radar echoes; Fourier transforms; matched filters; wideband-scaled Radon-Fourier transform; SNR loss; broadband networks; target speed; wide signal bandwidth; object detection; coherent integration method; WSRFT method; coherent integration time; high-speed radar target detection; scale effect compensation; signal-to-noise ratio; Radon transforms; pulse duration; narrowband matched fllter
• ISSN: 1751-8784; 1751-8792
• DOI: 10.1049/iet-rsn.2012.0364

High target speed, long pulse duration or wide signal bandwidth may cause noticeable scale effect on radar echoes, for which the conventional narrowband matched filter may introduce an obvious signal-to-noise ratio (SNR) loss for target detection. To obtain the ideal SNR gain in the above scenarios, a novel long-time coherent integration method has been proposed, namely wideband-scaled Radon-Fourier transform (WSRFT). The proposed WSRFT can compensate the scale effect not only on the single pulse but also among the multiple pulses in a long coherent integration time. Furthermore, the performance comparison between the proposed WSRFT and the existing Radon-Fourier transform method is given. Finally, some numerical experimental results are also provided to demonstrate the effectiveness of the proposed WSRFT method.