基于射频隐身的相控阵雷达功率控制算法

为了提高相控阵雷达的射频隐身性能，提出了一种基于射频隐身的功率控制算法。首先确定了功率分级的准则，并基于阵元的特性改进了一种粒子群多目标优化算法。然后以指定方向上达到期望功率、其他方向上功率最小为目标，利用改进的粒子群多目标优化算法，对阵元的开关进行了优化设计，仿真实现了功率分级。在满足检测概率的前提下，根据目标雷达反射截面的大小和目标距离，实现了目标跟踪时的功率控制。最后利用施里海尔截获因子对算法的隐身性能进行了衡量。仿真结果表明，本文算法具有较好的射频隐身性能。

Novel algorithm of power control based on radio frequency stealth

In order to improve the radio frequency stealth ability of a phased array radar, a method of power control based on radio frequency stealth is proposed. Firstly, the principle of power classification is presented. Secondly, regarding the desired power in the desired direction and minimum power in other directions as the target function, a particle swarm optimization method is improved to select the array for power classification. Finally, on the condition of constant detection probability, an adaptive method for emitting power is achieved according to the radar cross section (RCS) of varying sizes and the position of the target. The simulation results show that the proposed method has a better performance of radio frequency stealth.