高斯-克吕格投影坐标系下POS角元素的转换方法

我国的地形测量坐标系通常采用高斯-克吕格投影坐标系,由于地球曲率和子午线偏差的影响,POS系统提供的传感器姿态角向影像外方位角元素的转换过程中存在误差,需要引入一个额外的补偿矩阵进行修正。从分析地球曲率和子午线偏差对影像外方位角元素的影响入手,推导补偿矩阵的严密计算公式,并完善了POS角元素的转换公式。通过对带有POS数据的实际航摄影像资料处理,验证补偿矩阵的正确性和实用性。试验结果表明,高斯-克吕格投影坐标系下POS外方位角元素的转换与中央经线的选取密切相关,与坐标原点的选取无关。利用补偿矩阵转换的影像外方位角元素精度明显高于POS系统提供值的精度。...

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Bibliographic Details
Published in测绘学报 Vol. 40; no. 3; pp. 338 - 344
Main Author 袁修孝 张雪萍 付建红
Format Journal Article
LanguageChinese
Published 国家测绘局第一航测遥感院,陕西西安710054 2011
武汉大学遥感信息工程学院,湖北武汉,430079%武汉大学遥感信息工程学院,湖北武汉430079
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ISSN1001-1595

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Summary:我国的地形测量坐标系通常采用高斯-克吕格投影坐标系,由于地球曲率和子午线偏差的影响,POS系统提供的传感器姿态角向影像外方位角元素的转换过程中存在误差,需要引入一个额外的补偿矩阵进行修正。从分析地球曲率和子午线偏差对影像外方位角元素的影响入手,推导补偿矩阵的严密计算公式,并完善了POS角元素的转换公式。通过对带有POS数据的实际航摄影像资料处理,验证补偿矩阵的正确性和实用性。试验结果表明,高斯-克吕格投影坐标系下POS外方位角元素的转换与中央经线的选取密切相关,与坐标原点的选取无关。利用补偿矩阵转换的影像外方位角元素精度明显高于POS系统提供值的精度。
Bibliography:YUAN Xiuxiao1,ZHANG Xueping1,2,FU Jianhong1 1.School of Remote Sensing and Information Engineering,Wuhan University,Wuhan 430079,China;2.The First Institute of Photogrammetry and Remote Sensing,State Bureau of Surveying and Mapping,Xi'an 710054,China
11-2089/P
position and orientation system(POS); exterior orientation elements of image; earth curvature; meridian deviation; compensation matrix
Data obtained via airborne position and orientation system(POS) are in WGS-84,however,the topographic mapping coordinate systems in China are generally Gauss-Kruger projection coordinate system.Owing to the effects of earth curvature and meridian deviation,there are some errors in the process of angle transformation from roll,pitch and heading(Φ,Θ,Ψ) obtained directly by a POS to the attitude angles of images(φ,ω,κ) needed in photogrammetry.Based on the fundamental formula of earth curvature and meridian deviation effecting on angular elements,the method using a compensation matrix to correct the transformation errors is pr
ISSN:1001-1595