改进阈值分割的光斑中心定位方法

摘要

Spot positioning accuracy is an importantindicator for laser communication acquiring,tracking and positio-ning(APT)system,but the traditional spot positioning algorithm has some problems such as low positioning accuracy, poor anti -interference ability and poor real -time performance.In order to meet the requirement of high precision positioning of laser communication APT system,an improved laser spot center positioning method is proposed.The noise interference is reduced by improving the threshold segmentation to highten the positioning accuracy.The results show that compared with the traditional threshold segmentation method,the accuracy of the spot center is increased by more than 25％,so it is a feasible spot positioning algorithm.%光斑定位精度是激光通信瞄准、捕获、跟踪(APT)系统的重要指标,而传统的光斑定位算法,面临定位精度低,抗干扰能力差,实时性差等问题.为了满足激光通信APT系统光斑高精度定位的需求,提出一种改进的激光光斑中心定位方法.该方法通过改进阈值分割,降低了噪声干扰,提高了光斑定位精度.结果表明,与传统的阈值分割方法相比,光斑中心计算精度提高了25％以上,是一种可行的光斑中心定位方法.