四象限光电检测系统的定位算法研究及改进

在相同硬件条件下，四象限光电检测系统的线性区间和响应灵敏度等会因算法不同而产生差异。首先分析光斑定位的常用算法，通过数值积分和曲线拟合得出具有高斯分布的激光光斑位移量在不同算法下的修正曲线，设计制作了一套精度较高的数字式四象限光电定位系统，并使用该系统验证了理论推导结果。

Improvement of positioning algorithm for four-quadrant optoelectronic detection system

Under the same hardware conditions, the systematic characteristics such as the linear area and the responsivity of a four-quadrant optoelectronic detector changes as the algorithm changes. The common algorithms for laser spot positioning were analyzed. The correction curves for the displacement of Gauss laser spot were deduced with two-dimensional numerical integration and curve fitting, and a high-precision digital four-quadrant optoelectronic position detection system was designed and fabricated. The theoretically deduced result was verfied by the detection system.