一、定义稍早一些的文献把脉冲多卜勒(PD)雷达只定义成高脉冲重复频率一种形式。近十多年来,PD技术有了很大的发展,如果还象从前那样来定义PD雷达,不管在理论上还是在实践上,似乎都显得太狭义了。因此,本文把在频率域检测和处理信号的相参脉冲雷达系统统称为PD雷达系统。这样从信号的检测和处理方式上来区分,比 First, the earlier definitions of the literature defined pulsed Doppler (PD) radars as only one form of high pulse repetition frequency. For more than a decade, there has been a great development in PD technology. If PD radar is defined as before, it seems too narrow in theory and in practice. Therefore, in this paper, the coherent pulse radar system that detects and processes signals in the frequency domain is referred to as the PD radar system. This signal from the detection and treatment to distinguish up, than