中文说明：
根据干扰信号波形样式的不同，压制性干扰可分为噪声调幅干扰、噪声调频干扰、噪声调相干扰。就是用噪声或类似噪声的干扰信号遮盖或淹没有用信号，阻止雷达检测目标信息。它的基本原理是：任何一部雷达都有外部噪声和内部噪声，雷达对目标的检测是在这些噪声中进行的，其检测又是基于一定的概率准则的。一般来说，如果目标信号能量S与噪声能量N相比（信噪比S/N），超过检测门限D，则可以保证一定的虚警概率Pfa的条件下达到可检测目标回波所要求的检测概率Pd，简称为可发现目标，否则便称为不可发现目标。
English Description：
According to the different waveform of jamming signal, the suppressing jamming can be divided into noise amplitude modulation jamming, noise frequency modulation jamming and noise phase modulation jamming. It is to cover or submerge the useless signal with noise or interference signal similar to noise to prevent radar from detecting target information. Its basic principle is: any radar has external noise and internal noise, the target detection of radar is carried out in these noises, and its detection is based on certain probability criteria. Generally speaking, if the target signal energy s is higher than the noise energy N (signal to noise ratio S / N) than the detection threshold D, the detection probability PD required by the detectable target echo can be achieved under certain false alarm probability PFA, which is called discoverable target for short, otherwise it is called undetectable target