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本文叙述了多卜勒信号模拟的理论依据及实现这一模拟的两种途径;叙述了采用行波管单边带调制器和PIN二极管调制器模拟多卜勒信号的工作原理,并对它们目前达到的技术水平和存在的问题进行了分析.本文给出了二种模拟器的原理电路及其试验情况,其中包括波形和频谱图.试验表明,这二种调制器均能对载波和无用边带获得大于20dB的抑制片.
This paper describes the theoretical basis of Doppler signal simulation and two ways to realize this simulation. The working principle of Doppler signal simulation with TWT modulator and PIN diode modulator is described, and their current The technical level reached and the existing problems were analyzed.This paper presented the principle circuit of the two kinds of simulators and their experimental conditions, including the waveform and the spectrogram.The experimental results show that both the modulator and the carrier Band with more than 20dB suppression tablets.