基于PPI的二元积累PHT目标检测器

Hough变换只能用于常速直线运动目标的检测与跟踪,当目标有加速度时,检测与跟踪效果非常差。针对此问题,提出了一种PPI图像域基于二元积累极坐标Hough变换（PHT）的目标检测与航迹处理方法,该方法可用于目标的变速直线运动。首先分析了PHT的原理,然后给出了二元积累PHT检测器的结构并分析了该检测器的性能,最后用仿真实例对该算法进行了验证。理论分析和仿真结果表明,二元积累PHT算法可以有效提高微弱目标在低信噪比背景中的检测性能。

A PPI Target Detector Based on Binary Integrated Polar Hough Transform

Hough transform is only usedl for the detection and tracking of constant velocity targets which move straightly. When the targets have an acceleration, the performance of target detection and tracking he- comes very poor. To settle this problem, a target detection and track method is proposed in the thesis which is based on a binary integrated polar Hough transform（PHT） on the PPI（plan position indicator）. This method is effective for the detection of variable velocity targets which move straightly. The PHT principle is analyzed firstly, and the binary integrated PHT target detector is presented. Then the detection performance of the detector is analyzed. Finally, the performance of the method is verified by the simulation experiment. The theoretical analysis and simulation results suggest that the binary integrated PHT method can improve the detection performance of weak targets in the low signal to noise background effectively.