雷达干扰射频隐身特性及自适应功率控制方法

针对战机实施有源干扰时的射频隐身问题，分析了现有干扰功率 评估准则的不足，在雷达信号检测模型和侦察截获概率模型的基础上，讨论了“有效干扰” 对干扰功率的需求和射频隐身对干扰功率的限制，提出将有效干扰条件下的侦察截获概率作 为干扰信号的射频隐身特性表征因子，最后提出了一种结合目标雷达类型、接收信号功率以 及本机RCS起伏等因素的干扰功率自适应控制方法。通过对固定功率干扰与不同压制系数下 自适应功率干扰时雷达检测概率和侦察截获概率的仿真，表明自适应功率控制能够节约干扰 功率，在有效干扰的同时提高干扰的射频隐身能力。

RF stealth characteristic of radar jamming and adaptive power control method

To study the radio frequency (RF) stealth in airborne active jamming systems, th e shortage of traditional power criterion is analysed,the demand and limitation of jamming power are discussed, under conditions of effective jamming and RF ste alth based on the model of signal detection in radar and Electronic Support Meas urement (ESM). Keeping the detection probability of radar signals constant, the intercept probability of reconnaissance receiver, as the factor to appraise the stealth performance, is proposed. An adaptive control method of jamming power ba sed on the type of radar, received power and RCS blinking is put forward. In ord er to estimate the efficiency of this adaptive method, computer simulations are performed under different jamming blanket factors. Results indicate that compare d with the conventional approach, the adaptive method can reduce the jamming pow er, meet the requirement of effective jamming and improve the RF stealth perform ance of jamming signal as well.