| CCD推扫成像方式下星载GPS对地定位的模拟试验研究 |
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| 引用本文： | 李德仁,王树根.CCD推扫成像方式下星载GPS对地定位的模拟试验研究[J].武汉大学学报(信息科学版),1994(1). |
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| 作者姓名： | 李德仁 王树根 |
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| 作者单位： | 武汉测绘科技大学航测与遥感系 |
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| 摘 要： | 从理论上分析了利用遥感信息对地动态定位精度问题。用模拟数据推算了ＣＣＤ推扫成像方式下，星载ＧＰＳ天线定位精度对定位的影响；并用同一组试验数据按三种方案（①只用地面控制点而无ＧＰＳ观测值，②只用ＧＰＳ观测值而无地面控制点，③ＧＰＳ观测值加地面控制点）进行了对地定位精度的比较；同时考虑了ＧＰＳ天线中心与ＣＣＤ扫描中心间的转换以及ＧＰＳ观测值所在地心直角坐标系与光束法平差所在局部切面坐标系之间的转换．
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| 关 键 词： | 星载GPS CCD推扫式影像 光束法平差 动态对地定位 |
Research on the Ground Positioning of Satellite Based GPS under CCD Pushroom Scanning Mode |
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| Li Deren, Wang Shugea.Research on the Ground Positioning of Satellite Based GPS under CCD Pushroom Scanning Mode[J].Geomatics and Information Science of Wuhan University,1994(1). |
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| Authors: | Li Deren Wang Shugea |
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| Abstract: | in this paper,we start from the theoretic accuracy analsis of CCD pushroom scannins mode,use the analogous data,to calculate the influence of satellite based GPS antennapositioning accuracy to the object positioning for sround. Using the same group of test data,tLhe comparisions of ground point determination accuracy among following three cases aredown, which includes: 1)Only ground control Points are used but no GPS observations; 2)Only GPS observations are used but no ground control POints; 3)Both ground control pointsand GPS observations are used. Moreover I the transformation between the geocentrics coodinate system and the tangent plane coordinate system is considered,and also the transformation between the center of GPS antenna and of CCD scanner center. The obtained conclusions are useful for the study of remote sensing information POSition system for ground andof determing the observation method for satellite based GPS. |
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| Keywords: | satellite based GPS CCD pushroom scanning mode bundle method adjustment kinematic pesitioning for ground |
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