寄生调幅 meaning in English

parasitic amplitude modulation
spurious amplitude modulation

The character of radar system is restricted by parasitical am . to restrain parasitical am , a low pass filter is used in the if circuit . the result shows that the fmcw detecting range of the radar with the filter is greater than that without
较大的vco寄生调幅对雷达的作用距离有严重影响，对此，本文进行了分析，并提出了一种在中频电路中用滤波电路进行抑制由寄生调幅带来的于扰信号的方法。