步进频率脉冲雷达回波最佳采样点的研究

Research of Optimal Sampling Point of Frequency-stepped Pulse Radar Echo

脉冲步进频率信号经过相关解调后其脉内相位保持相对恒定,因此可以对其解调后的信号采取特殊的方式进行采样。但是如果采样点选择不当,可能会在处理时漏掉某些目标。本文在分析脉冲步进频率信号波形的基础上,给出了一个最佳采样时刻。仿真结果表明,最佳采样时刻的采样值可以包含所有目标的信息。

It can be sampled by special method since the phase is invariable intrapulse after correlative demodulation of the frequencystepped pulse signal. But if the sampling point is not selected correctly, the information of some targets will be lost. In this paper, an optimal sampling point is given based on the analysis of frequencystepped pulse signal waveform. Simulation results show that sampling at the optimal point can include the information of all targets.