基于Keystone变换的低空小目标雷达探测方法

长时间相参积累是低空小目标雷达探测的有效手段,然而对于较大速度的目标,长时间相参积累存在距离走动的问题。针对该问题,本文提出了一种基于Keystone变换的低空小目标探测方法。首先,给出了低空小目标探测所面临的长时间相参积累问题;然后提出了基于Keystone变换的探测方法及快速实现方法;最后给出典型仿真目标的仿真结果。所提方法可以同时解决大速度范围内的目标统一探测问题,仿真结果验证了所提方法的有效性。

Detection Method of Low Altitude Small Target Based on Keystone Transform

Long-time coherent accumulation is an effective method for radar detection of small targets in low altitude. However, for targets with high speed, long-time coherent accumulation has the problem of range walking. To solve this problem, a detection method of low altitude small target based on keystone transform is proposed in this paper. First, the problem of long-time coherent accumulation in low altitude small target detection is presented. Second, the detection method based on keystone transform and its fast implementation method are proposed. Finally, the simulation results of a typical target is given. The proposed method can simultaneously solve the problem of unified detection in a large speed range, and the simulation results verify the effectiveness of the proposed method.