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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。
Trapping, tracking, aiming systems Fine tracking detectors have different effects on spot positioning of fine tracking systems under different noises. The source of the strip noise is analyzed. The influence of the strip noise on the centroid algorithm is deduced theoretically. The threshold centroid algorithm is used to locate the spot with the image of bar noise and salt and pepper noise. The location misalignment of X-axis and Y-axis under different thresholds and different spot image signal-to-noise ratio is simulated and compared. positioning accuracy. The simulation results show that the strip noise extending along the Y-axis makes the X-axis spot location accuracy better than the Y axis. Experiments were performed to test the tracking accuracy of the X-axis and Y-axis tracking systems with different system configurations and different disturbance amplitudes. The experimental results show that the tracking accuracy of X-axis is better than that of Y-axis for two orthogonal axisymmetric precision tracking systems, which verifies that the existence of strip noise makes X-axis spot location accuracy better than Y axis. The experimental results And simulation analysis results.