| 死区对四象限跟踪传感器跟踪精度的影响 |
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| 引用本文： | 马晓燠,母杰,饶长辉.死区对四象限跟踪传感器跟踪精度的影响[J].物理学报,2012,61(7):72903-072903. |
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| 作者姓名： | 马晓燠 母杰 饶长辉 |
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| 作者单位： | 1. 中国科学院光电技术研究所, 成都 610209;2. 中国科学院自适应光学重点实验室, 成都 610209;3. 中国科学院研究生院, 北京 100049 |
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| 摘 要： | 介绍了四象限跟踪传感器原理后, 分析了存在噪声和死区条件下的四象限探测器的光斑能量探测率、质心探测误差和光斑位移敏感度, 推导了此时四象限跟踪传感器跟踪误差的理论公式, 并通过实验证明了理论分析的正确性. 理论分析和实验的结果都表明, 在相同的噪声情况下, 质心探测误差和位移敏感度都随着光斑的高斯宽度与死区宽度之比减小而增大, 但是位移敏感度增大的趋势要小于质心探测误差增大的趋势, 它们共同作用的结果就导致了光斑的高斯宽度与死区宽度之比越大, 四象限跟踪探测器的跟踪误差越小.
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| 关 键 词： | 光学工程 跟踪传感器 四象限探测器 噪声分析 |
| 收稿时间： | 2010-12-16 |
Error analysis of four-quadrant-based tracking sensor when dead zone is inevitable |
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| Ma Xiao-Yu,Mu Jie,Rao Chang-Hui.Error analysis of four-quadrant-based tracking sensor when dead zone is inevitable[J].Acta Physica Sinica,2012,61(7):72903-072903. |
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| Authors: | Ma Xiao-Yu Mu Jie Rao Chang-Hui |
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| Institution: | 1. The Laboratory on Adaptive Optics, Institute of Optics and Electronics, Chinese Academy of Sciences. Chengdu 610209, China;2. The Key Laboratory on Adaptive Optics, Chinese Academy of Sciences, Chengdu 610209, China;3. Graduate University of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | Based on the basic principle of four-quadrant-based tracking sensor, the energy detecting rate, centroid detecting error and the displacement sensitivity of four-quadrant detector caused by noise or dead zone are analyzed in detail. The tracking error formula of four-quadrant-based tracking senor is put forward theoretically and verified experimentally. The results show that when the noises are constant, the tracking error of four-quadrant-based tracking senor depends on the ration between the width of Gauss facula and the width of dead zone of four-quadrant detector. |
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| Keywords: | optical engineering tracking sensor four-quadrant detector noise analysis |
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