Research on Method of Monopulse Estimation Based on Variable Pulse Repetition Time Stepped-Frequency Waveform

Abstract:

Stepped-frequency signal is an important high distance resolution signal, but it is easy to be effected by target motion. When the target moves, the phenomenon of waveform broaden and range walk would appear if we process the echo of normal stepped-frequency signal directly, so we should compensate target velocity before angle measurement; in regard to variable pulse repetition time stepped-frequency signal, there is only range walk without waveform broaden if we process the echo directly, so we could conduct the amplitude and sum-difference monopulse estimation without velocity compensation, measuring efficiency could be improved. In this article, we analyzed the principle of variable PRT stepped-frequency signal, compare it with the normal stepped-frequency signal to prove its effectiveness. Then we verify the feasibility of angle measurement by using this method.

• Periodical: Advanced Materials Research (Volumes 846-847)
• Pages: 1221-1224
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.846-847.1221
• Online since: November 2013
• Authors: Yao Tian Zhang*, Jia Jia Liu, Yu Xian Zhang, Miao Liu
• Keywords: Monopulse Estimation, Stepped-Frequency Waveform, Variable Pulse Repetition Time (PRT), Waveform Broaden

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