Comparison of radar waveforms combining pseudo‐random binary phase coding and chirp modulation for an high‐frequency monostatic radar. Issue 5 (1st June 2016)

• Record Type: Journal Article
• Authors: Shi, Shu‐zhu; Zhao, Zheng‐yu; Liu, Jing‐nan
• Is Part Of: IET radar, sonar & navigation. Volume 10:Issue 5(2016)
• Page Start: 935
• Page End: 944
• Publication Date: 2016-06-01
• Subjects: binary codes -- phase coding -- ionospheric techniques -- backscatter -- chirp modulation -- Doppler radar -- radar resolution; radar waveform requirements -- pseudo‐random binary phase coding -- chirp modulation -- low‐power high‐frequency monostatic radar -- Wuhan ionospheric oblique backscattering sounding system -- WIOBSS -- ionospheric sensing -- aircraft detection -- interpulse PRBPC waveform -- coding sequence period -- intrapulse PRBPC waveform -- ambiguity function analysis -- range resolution -- signal processing gain -- Doppler tolerance; Signal processing -- Periodicals; Radar -- Periodicals; Sonar -- Periodicals; Electronics in navigation -- Periodicals; Navigation -- Periodicals; 621.3848
• DOI: 10.1049/iet-rsn.2014.0507
• Languages: English
• ISSNs: 1751-8784

Abstract

Abstract : Wuhan ionospheric oblique backscattering sounding system (WIOBSS) is a low‐power high‐frequency monostatic radar used for ionospheric sensing and aircraft detection. In this study, a novel waveform combining the pseudo‐random binary phase coding (PRBPC) and the chirp modulation is proposed for this radar. Furthermore, in terms of the radar waveform requirements, four subclasses of this waveform are theoretically compared to determine which one of them is most suitable for WIOBSS, including the inter‐pulse PRBPC waveform where the width of the subpulse is equal to the chirp duration, the inter‐pulse PRBPC waveform where the period of the coding sequence is equal to the chirp duration, the intra‐pulse PRBPC waveform where the width of the subpulse is equal to the chirp duration, and the intra‐pulse PRBPC waveform where the period of the coding sequence is equal to the chirp duration. The radar waveform requirements, the ambiguity function analysis, and the performance comparison of aforementioned waveforms are described. The analysis results show that the inter‐pulse PRBPC waveform where the period of the coding sequence is equal to the chirp duration has the best performance, and can achieve higher range resolution, larger signal processing gain, and better Doppler tolerance than the conventional binary phase coded waveforms.