中文说明：
该程序计算干扰环境中的雷达距离。它既适用于远距干扰，也适用于具有频率捷变、相干积分和标准大气/降雨衰减的稳定和旋转型目标的自屏蔽干扰。
English Description：
The program calculates the radar range in jamming environment. It is not only suitable for long-range jamming, but also suitable for self shielding jamming of stable and rotating targets with frequency agility, coherent integration and standard atmosphere / rainfall attenuation.