基于无线激光通信系统的信标光中心检测误差评价方法

Evaluation of Beacon Center Detection based on Wireless Laser Communication System

摘要:

传统的光斑中心计算方法仅依赖图像本身,并且与实际应用环境的耦合度较低,缺少客观的评价标准,通常采用同一位置光斑多次拍摄图片的均值来近似确定光斑中心。在这篇文章中提出一种基于非独立信标光的空间激光通信光学天线子系统,在进行系统标校之后,分别采用质心法、Hough变换法和圆拟合的圆心检测方法,通过与激光通信信号光紧密耦合来评价信标光中心计算方法的误差性能。实验结果表明,在所述的实验环境和条件下,质心法准确性较高。在应用层面,该评价方法可以为图像探测单元的方案取舍提供参考。

Abstract:

The traditional method of calculating the spot center relies on the image itself, and the coupling degree with the actual application environment is low, it also lacks objective evaluation standards. Usually, the average value of multiple shots of the same spot is used to approximate the spot center. In this article, a space laser communication optical antenna subsystem based on non-independent beacon light is proposed. After system calibration, the center of mass method, Hough transform method and circle fitting center detection method are used to evaluate the error performance of beacon light center calculation method through tight coupling with laser communication signal light.The communication signal light is tightly coupled to evaluate the error performance of the calculation method of the beacon center. The experimental results show that under the experimental environment and conditions, the centroid method is more accurate. At the application level, this evaluation method can provide a reference for the selection of the image detection unit.