| 在轨卫星无地面控制点摄影测量探讨 |
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| 引用本文： | 王任享,王建荣,胡莘.在轨卫星无地面控制点摄影测量探讨[J].武汉大学学报(信息科学版),2011,36(11):1261-1264. |
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| 作者姓名： | 王任享 王建荣 胡莘 |
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| 作者单位： | 1. 西安测绘研究所,西安市雁塔路中段1号,710054
2. 西安测绘研究所,西安市雁塔路中段1号710054／长安大学地质工程与测绘工程学院,西安市雁塔路126号710054 |
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| 摘 要： | 摄影测量卫星采用商用级星敏感器构成的测姿系统,其姿态测量存在不可忽视的低频和＂慢漂＂系统性误差,使得经过在轨标定后的星敏感器和三线阵CCD相机安装角转换参数产生额外的增量dφC、dωC、dκC。在一条航线内,这些增量可视为常量,依靠其在立体模型上表现的上下视差规律,在无地面控制点条件下,通过在光束法平差中增加对dφC、dωC及dκC补偿的措施,无地面控制点目标定位改善到11～22m左右。
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| 关 键 词： | 星敏感器 光束法平差 卫星摄影测量 “慢漂”误差 |
Photogrammetry of In-Flight Satellite Without Ground Control Point |
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| WANG Renxiang WANG Jianrong, HU Xin.Photogrammetry of In-Flight Satellite Without Ground Control Point[J].Geomatics and Information Science of Wuhan University,2011,36(11):1261-1264. |
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| Authors: | WANG Renxiang WANG Jianrong HU Xin |
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| Institution: | WANG Renxiang 1 WANG Jianrong1,2 HU Xin1(1 Xi'an Research Institute of Surveying and Mapping,1 Middle Yanta Road,Xi'an 710054,China)(2 Institute of Geology-Engineering and Geomatics,Chang'an University,126 Yanta Road,China) |
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| Abstract: | Photogrammetric satellites using commercial grade stellar sensor constitute the attitude determination system,the measurement of attitude existents low-frequency and low-drift systematical error,which can not be ignored and make the stellar sensors units to three-line CCD camera installation angle conversion parameters after the in-flight calibration to generate additional increment dφC,dωC,dκC.In one of the course,these increments can be regarded as constants,relying on its stereo model on the performance of vertical parallax rule.Under the condition without ground control points,adding measures to compensate dφC,dωC and dκC in bundle adjustment,the positioning error of targets improved to 11-22 m. |
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| Keywords: | stellar sensor bundle adjustment satellite photogrammetry low-drift error |
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