非相干干扰目标分辨的计算机仿真

Simulation of Targets Discrimination in Non-Coherent Jamming

分辨角是非相干干扰的重要性能指标之一。在介绍单脉冲雷达角跟踪系统工作原理的基础上,建立了单脉冲雷达对同一波束内两目标测角特性的模型。通过计算机仿真,分析了雷达分辨目标的原理,给出了分辨角的计算方法。计算机仿真结果表明,当能量比为1时,分辨角约等于波束半功率宽度。当能量比不为1时,没有明显的目标分辨时刻,天线逐渐向能量大的目标偏转并对准目标。

Resolution angle is one of the important parameters of non-coherent jamming. Based on analysis of the principle of angle tracking system of monopulse radars, a model of angle measurement for two targets within the same beam was set up. The principle of radar distinguish ability between two targets was analyzed by simulation, and a method of computing resolution angle is presented. The simulation result indicate that the resolution angle is approximately equal to the beam width when the energy ratio is equal to 1, but when the ratio is not equal to 1, there is no clear time point at which the targets were distinguished, and the antenna will gradually turn towards the target whose energy is larger than the other.