The Doppler effects caused by radar-target relative motion is one of the central problems in SF Radar, which cause range-velocity coupling and wave distortions. Extensive research is being carried out on various velocity compensation methods, such as varieties rate of range, Min-Entropy, PD processing and correlation methods. However, these methods have different velocity ambiguity and velocity measurement precisions. This paper presents a new method to estimate velocity, which can resolve the problem of ambiguous velocity by PD processing. Firstly, the waveforms of Stepped-frequency pulse trains and PD Processing methods are analyzed. The relation between unambiguous velocity range, precision and signal parameters is discussed. Then, a new algorithm is developed to achieve wide unambiguous velocity and high anti-noise performance, which is similar with the principle of multiple PRFs in Pulsed Radar. Based on parameters in some radar, the algorithm is evaluated. The simulation results confirm the above mentioned achievements.

Date Published: 24 October 2006
PDF: 5 pages
Proc. SPIE 6357, Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence, 635711 (24 October 2006); doi: 10.1117/12.716917

Published in SPIE Proceedings Vol. 6357:
Sixth International Symposium on Instrumentation and Control Technology: Signal Analysis, Measurement Theory, Photo-Electronic Technology, and Artificial Intelligence
Jiancheng Fang; Zhongyu Wang, Editor(s)