频率步进雷达中波形分析法精确测距的研究

Research on Accurate Range Measuring with Waveform Analysis Method in Stepped Frequency Radar

分析了在频率步进雷达信号处理中,如何应用波形分析法来实现精确测距的问题。针对目标运动影响各种系统的不同情况,分别提出了脉内波形分析法和细化结果内的波形分析法,前者可用于目标运动影响较大的系统,后者则适用于目标运动影响较小的系统。基于波形分析法原理,结合目标运动对不同系统产生的影响,分别论述了两种方法的原理及实现方法,最后通过仿真结果证明了两种方法可有效地提高测距精度,并详细分析了它们的性能。

The method that applies the waveform analysis method to the stepped frequency radar is introduced in this paper. According to the condition that target motion will have different effects on the different systems, the waveform analysis methods in the echo pulse and in the finer subdivision results are put forward respectively to realize accurate range measuring. The former one can be applied when target motion has a serious influence on the system, and the latter one is opposite. According to the different influences of motion, the principles of two methods are discussed based on theory of waveform analysis method. The simulation results indicate that the two methods are valuable for accurate range measuring, and their respective performance is analyzed.