为了满足平台漂移测量系统中平台漂移角速度高精度测量的要求,基于傅里叶级数, 提出了一种改进的激光光斑中心高斯拟合定位方法。该方法在简化高斯拟合模型的同时保证了相对较高的激光光斑中心定位精度。结果表明, 改进的高斯定位算法中心定位精度为0.01pixel, 明显优于传统质心法和带阈值质心法的0.1pixel。改进后的算法具有较好的算法稳定性。

In order to satisfy the high precision measurement requirement of angular velocity of platform drift in a platform drift measurement system, an improved Gaussian fitting method of laser spot center positioning was proposed based on the Fourier series. By using this method, Gaussian fitting model was simplified and at the same time the precision of laser spot center positioning was relatively high. Experimental results show that center positioning accuracy of the improved Gaussian positioning algorithm is 0.01pixel, better than 0.1pixel of traditional centroid method and centroid method with threshold significantly. The improved algorithm in this paper has better algorithm stability.