Doppler compensation method for the complementary phase-coded signal

• Published in: Journal of engineering (Stevenage, England) Vol. 2019; no. 21; pp. 7521 - 7524
• Main Authors: Li, Wenji, Ren, Lixiang, Mao, Erke, Fan, Huayu
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 01.11.2019; Wiley
• Subjects: autocorrelation properties; compensation; complementary phase-coded signal; complementary sequence; correlation methods; cross-correlation properties; Doppler compensation method; Doppler frequency shift; Doppler radar; Doppler sensitivity issue; high-frequency surface wave radar; IET International Radar Conference (IRC 2018); improved range resolution; mathematical analysis; mathematical derivation; MIMO radar; phase coding; phase-coded radar; radar resolution; signal processing diagram model; phase coding; Doppler sensitivity issue; autocorrelation properties; Doppler frequency shift; mathematical analysis; mathematical derivation; cross-correlation properties; MIMO radar; radar resolution; phase-coded radar; high-frequency surface wave radar; compensation; Doppler radar; improved range resolution; Doppler compensation method; complementary phase-coded signal; signal processing diagram model; correlation methods; complementary sequence
• ISSN: 2051-3305; 2051-3305
• DOI: 10.1049/joe.2019.0379

The Doppler sensitivity issue is an urgent problem to be solved for the phase-coded radar although it can give the promise of improved range resolution and resistance against various kinds of distortion. Due to the ideal autocorrelation and cross-correlation properties, the complementary sequence is utilised in high-frequency surface wave radar and MIMO radar. However, the Doppler frequency shift affects the autocorrelation property of the complementary sequence. This study aims to solve this problem. Based on the signal model and mathematical derivation, a new algorithm is proposed and the simulation results indicate the effectiveness of this method. This study also puts forward the signal processing diagram and the method to obtain the new code.