针对激光通信捕获、跟踪、瞄准系统对光斑位置检测精度的需求，提出了基于互补金属氧化物半导体探测器的光斑位置检测精度评价方法，并用此方法量化了常用的滤波算法对光斑位置检测精度的影响。利用高精度位移平台测试相机的随机误差和系统误差，分别采用中值滤波、均值滤波、高通滤波、形态学滤波对光斑图像进行处理，并计算滤波后光斑的质心位置，比较滤波前后光斑位置的检测精度，评价滤波算法对位置检测的影响。实验表明，滤波会降低光斑位置检测精度，进而根据实验结果提出了避免上述精度降低问题出现的方法。

For laser communication acquisition, tracking and pointing system on the spot position detection accuracy demand, based on complementary metal oxide semiconductor detector, light spot position detection accuracy evaluation method, and using this method to quantify the commonly used filtering algorithm on the spot position detection accuracy effect are proposed. High precision displacement platform is used to test camera, random error and systematic error, then the median filtering, mean filtering, high pass filtering, morphology filtering processing of spot images are applied, and the filtered centroid positions are calculated. The light spot position detection accuracy before and after filtering is compared, and the influence of filtering algorithms on detecting position is evaluated. Experiments show that the accuracy of the spot detection can be reduced and the method of avoiding the deterioration of accuracy of the problems mentioned above is proposed according to the experimental results.