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一、总述第二次世界大战后雷达系统的发展可概述如下: 第一阶段,采用较小的天线、辐射的功率较小。天线辐射方向图的质量很差,有很大的寄生辐射(旁瓣),发射信号频谱质量很差。信号处理手段很有限,实际上只有动目标显示(MTI)和一些小电路,如灵敏度时间控制(STC)、对数/脉宽鉴别(Log/PLD)等。第二阶段,天线面逐渐增大,辐射方向图的质量稍有改善,与此同时平均发射功率往往增加很多。单脉冲测角技术逐渐在大多
I. General Overview The development of the radar system after the Second World War can be summarized as follows: In the first phase, a smaller antenna is used and the radiation power is smaller. The quality of the antenna radiation pattern is poor, with large parasitic radiation (sidelobes) and poor spectral quality of the transmitted signal. Signal processing is limited and in fact only moving target display (MTI) and small circuits such as STC, Log / PLD, and so on. In the second phase, the antenna area is gradually increased and the quality of the radiation pattern is slightly improved, meanwhile the average transmit power tends to increase a lot. Single-pulse angle measurement technology gradually in most