在对机载雷达多普勒波束锐化(DBS)原理进行分析的基础上,提出了在不增加雷达系统复杂性的同时,通过改进信号处理算法,根据天线扫描角等参数,实时调整成像的脉冲积累个数及参与积累脉冲的抽取方式来保证波束锐化比的恒定,从而提高DBS成像质量的实现方法;经过实时记录数据的仿真分析,证明了此算法的可行性和有效性。

On basis of analysis of Doppler beam sharpening principle,an improved signal processing algorithm is presented to improve the quality of DBS images without increasing system complexity.By real-time adjusting the number of accumulated pulses as well as the method of pulse extraction according to the azimuth scanning parameters,constant beam sharpening ratio can be achieved.Simulation and analysis of the measured data prove the feasibility and effectiveness of this improved algorithm.

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