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| Target’s Redundancy Removed Algorithm for Modulated Frequency
Stepped Pulse Radar Signal Echoed by Moving Target |
| Su Hong-yan; Long Teng; He Pei-kun; Hou Xiao-min |
| Dept. of Electronic Engineering, Beijing Institute of Technology, Beijing 100081, China |
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Abstract To reduce the loss of sampling, higher sampling frequency than bandwidth of chirp must be adopted for Modulated Frequency Stepped Pulse(MFSP) radar signal, which will bring on over-sampling result of pulse compression for chirp. So the pick-up algorithm for the MFSP radar signal must be adopted to eliminate target’s redundancy in order to obtain fine HRRP(High-Resolution Range Profile). However, because of inaccuracy of the velocity compensation method, the velocity error of the moving target will produce velocity-range coupling error, even bring the influence of losing target or producing spurious peaks on the HRRP. This paper proposes a target’s redundancy removed algorithm based on the offset of the most powerful scatterer, which can solve the velocity-range coupling problem effectively by modifying the pick-up scopes of all sampled points. Finally, the processing results of both simulated data and real radar data validate the correctness of theoretical analysis.
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Received: 10 September 2004
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2006, Vol. 28 
