Micromotion Feature Extraction with Multi-beam in Low PRF

Abstract

Considering the real-time requirement of the target recognition task, a kind of micromotion feature extraction method in low pulse repetition frequency(PRF) with multi-beam is proposed. Firstly, the transmitting waveform is designed and the multi-target observation is achieved. And then, considering the performance of target tracking, the time series of transmitting pulses is designed in low PRF. At last, the OMP algorithm is used and the micromotion feature of targets in different directions is extracted successfully by directly using the narrowband tracking pulses, which has improved the working efficiency of the radar and the real-time ability of the target recognition task. The simulation has proved the performance of the algorithm in low SNR circumstance.