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文摘
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激光光斑质心定位是星载激光高度计指向角地面定标的关键.基于激光光斑的远场分布特点介绍了地面光斑质心的定义;从定位精度、抗干扰能力、运算量等方面分析了高斯曲面拟合算法、强度质心定位算法、平方加权质心定位算法的适应性及优缺点;对地面光斑进行了建模和质心计算,并分析对比了各质心定位算法的应用特点.结果表明此三种算法对光斑的定位结果一致,且平方加权质心定位算法最适于场地定标数据处理. |
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其他语种文摘
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Laser spot centroid locating is the key of ground-based calibration of spaceborne laser altimeter's pointing angle. Definition of the ground spot centroid is introduced based on far-field distribution of laser spot. The flexibility, advantages and disadvantages of Gauss surface fitting algorithm,intensity centroid localization algorithm and square weighted centroid localization algorithm are analyzed from the aspects of positioning accuracy, anti-interference ability, and computation cost. The modeling and centroid calculation of ground-based spot are carried out, and the application characteristics of each centroid localization algorithm are analyzed and compared. Results show that the laser spot locating by the three algorithms are consistent,and the square weighted centroid localization algorithm is most suitable for the field calibration data processing. |
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来源
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量子电子学报
,2018,35(3):338-343 【扩展库】
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DOI
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10.3969/j.issn.1007-5461.2018.03.013
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关键词
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激光技术
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质心定位
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地面定标
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激光光斑
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高斯分布
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拟合
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地址
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1.
中国科学院安徽光学精密机械研究所, 中国科学院通用光学定标与表征技术重点实验室, 安徽, 合肥, 230031
2.
中国科学技术大学, 安徽, 合肥, 230026
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-5461 |
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学科
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电子技术、通信技术 |
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基金
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国家自然科学基金
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文献收藏号
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CSCD:6246585
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