关于飞行器雷达导引头检测方法研究

Research on Flight Vehicle Radar Seeker Detection Method

在探测空中高速目标时,采用宽带波形的雷达导引头可有效提高距离分辨率和抗干扰能力。由于目标相对速度过大,相参积累处理将出现跨距离单元移动现象。为解决上述现象引起的检测性能下降问题,提出了采用Keystone变换的距离走动补偿算法,并给出了Clean多目标检测流程。同时在求解时提出了一种简单的变步长搜索的改进方法,最后通过仿真对算法的可行性和有效性进行了验证。所研究的算法可大幅降低解模糊的时间复杂度,有效提高相参积累增益。

Broadband waveform can improve the range resolution and anti-jamming ability of radar seeker. But detecting high speed aerial targets with seeker may leads migration through range cell during coherent integration process, due to large relative velocity, which decreases accumulation gain and affects detection performance. Rangewalk compensation method was studied in the paper, based on which the multi-target detection process using Clean algorithm was proposed. Meanwhile, a simple solution of variable step search algorithm was proposed. At last, simulation results verified the effectiveness of the method. The proposed method can reduce time complexity of solving ambiguity highly and improve coherent integration gain effectively.