| Position Adaptive Measurement Model for Double-four Quadrant Photoelectric Detector |
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| 作者姓名： | 党丽萍 刘君华 唐树刚 刘洪飞 |
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| 作者单位： | [1]School of Electrical Engineering, Xi＇ an Jiaotong University, Xi＇ an 710049 Shaanxi, China [2]Institute of Surveying and Mapping in Xi＇an, Xi＇an 710063 Shaanxi, China [3]Army Representation Office, Xiguang Group, Xi＇an 710043 Shaanxi, China |
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| 基金项目： | 国防科技科研项目
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国家高技术研究发展计划(863计划) |
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| 摘 要： | A modeling method of the support vector machine combined with matrix optics is considered; a complete new measurement model for double-four quadrant photoelectric detector is built. According to the analysis of the received light spot size and its motion with the changes of the defocusing amount of detector photosensitive surface and the detector position attitude in the optical path, a mathematic expression of photoelectrical conversion is given, which can be applicable to random setting position of the detector at any time. Based on least square support vector machine （LS SVM）, the mapping relationship among the output signal linear characteristic parameters （zero neighborhood gradient and intercept）, the defocusing amount of the detector and the installation position attitude angle is established. Thus, the multiple dimensional high accuracy measuring and adjusting control system can be left out, and adaptive measurement of the detector parameters can be realized. Compared with existed measurement model and method, the presented model has the advantages of more clear physical meaning, closer to work mechanism of detector, acquiring more complete sample data and wiping out the dead spots or bad spots in measurement. And the accuracy of displacement measurement is increased to 3μm. At the same time, this measurement mode provides a technical shortcut for three-dimensional small angle measurement.
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| 关 键 词： | 光电探测器 位置适应管理 管理模型 无线电导引 线性参数 |
| 收稿时间： | 2005-08-20 |
Position Adaptive Measurement Model for Double-four Quadrant Photoelectric Detector |
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| DANG Li-ping,LIU Jun-hua,TANG Shu-gang,LIU Hong-fei.Position Adaptive Measurement Model for Double-four Quadrant Photoelectric Detector[J].Journal of China Ordnance,2006,2(2):106-111. |
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| Authors: | DANG Li-ping LIU Jun-hua TANG Shu-gang LIU Hong-fei |
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| Abstract: | A modeling method of the support vector machine combined with matrix optics is considered; a complete new measurement model for double-four quadrant photoelectric detector is built. According to the analysis of the received light spot size and its motion with the changes of the defocusing amount of detector photosensitive surface and the detector position attitude in the optical path, a mathematic expression of photoelectrical conversion is given, which can be applicable to random setting position of the detector at any time. Based on least square support vector machine (LS SVM), the mapping relationship among the output signal linear characteristic parameters (zero neighborhood gradient and intercept), the defocusing amount of the detector and the installation position attitude angle is established. Thus, the multiple dimensional high accuracy measuring and adjusting control system can be left out, and adaptive measurement of the detector parameters can be realized. Compared with existed measurement model and method, the presented model has the advantages of more clear physical meaning, closer to work mechanism of detector, acquiring more complete sample data and wiping out the dead spots or bad spots in measurement. And the accuracy of displacement measurement is increased to 3 μm. At the same time, this measurement mode provides a technical shortcut for three-dimensional small angle measurement. |
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| Keywords: | double-four quadrant photoelectric detector optical ray vector measurement model linear characteristic parameter Detector Model Measurement Adaptive mode technical small angle measurement high accuracy displacement measurement increased sample data dead work mechanism clear physical meaning existed method |
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