探测器条状噪声对精跟踪系统光斑定位的影响

发布时间：2018-05-16 00:21

本文选题：光通信 + 捕获、跟踪、瞄准系统　；参考：《中国激光》2017年09期

【摘要】：捕获、跟踪、瞄准系统精跟踪探测器在不同噪声下对精跟踪系统进行光斑位置定位的影响不同。分析了探测器条状噪声的来源,理论推导了条状噪声对质心算法的影响。采用阈值质心算法对含有条状噪声和椒盐噪声的图像进行光斑定位,仿真分析了不同阈值、不同光斑图像信噪比下X轴和Y轴的光斑定位偏差,对比了X轴和Y轴的光斑定位精度。仿真结果表明,沿Y轴方向延伸的条状噪声使得X轴光斑定位精度优于Y轴。实验分别测试了不同系统配置、不同干扰幅度下精跟踪系统X轴和Y轴的跟踪精度。实验结果表明,对于两个正交轴对称的精跟踪系统,X轴的跟踪精度优于Y轴,从而验证了条状噪声的存在使得X轴的光斑定位精度优于Y轴的结论,实验结果和仿真分析结果相符。
[Abstract]:The effect of the target tracking system on the position of the spot position of the precision tracking system under different noise is different. The source of the bar noise is analyzed. The influence of the bar noise on the centroid algorithm is derived. The threshold centroid algorithm is used to locate the spot location of the image containing the stripe and salt and pepper noise. The location deviation of X axis and Y axis under different threshold and different light spot image is simulated and analyzed. The positioning accuracy of the X axis and the Y axis is compared. The simulation results show that the positioning accuracy of the X axis is better than the Y axis, which extends along the direction of the Y axis. The experiment is used to test the different system configuration and the precision tracking system under the different interference amplitude. The tracking accuracy of the X axis and the Y axis shows that the tracking accuracy of the X axis is better than that of the Y axis for the two orthogonal axis symmetrical precision tracking systems, which proves that the existence of the bar noise makes the positioning accuracy of the X axis better than the Y axis, and the experimental results are in agreement with the simulation analysis.

【作者单位】：中国科学院上海技术物理研究所空间主动光电技术重点实验室;中国科学院大学;
【基金】：国家自然科学基金(61302181)
【分类号】：TN929.1

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