| 提高GPS水准解算精度的一种新方法 |
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| 引用本文： | 施一民,张文卿,施宝湘.提高GPS水准解算精度的一种新方法[J].同济大学学报(自然科学版),2000,28(4):426-429,433. |
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| 作者姓名： | 施一民 张文卿 施宝湘 |
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| 作者单位： | 1. 同济大学,测量与国土信息工程系,上海,200092
2. 宁波市测绘院,浙江,宁波,315040 |
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| 基金项目： | 国家自然科学基金!（49971067） |
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| 摘 要： | 讨论了用ＧＰＳ测量确定点位正常高的理论和方法，基于似大地水准现成椭球面之间存在着一定的倾斜，提出先作出Ｅ３椭球面使其与似大地水准面在基准点处相交，再以调整定向后的区域性椭球面来逼近似大地水准面，以消除调和党的系统性偏差；尔后再作二次曲面似合，实测的宁波市ＧＰＳ控制网的数据表明，提出的这种方法与通常采用的二次曲面拟合解法相比，正常高的求解精度与可靠性有显著的提高。
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| 关 键 词： | GPS水准 区域性椭球 解算精度 |
New Solution for Improving Precision of GPS Levelling |
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| SHI Yi-min,ZHANG Wen-qing,SHI Bao-xiang.New Solution for Improving Precision of GPS Levelling[J].Journal of Tongji University(Natural Science),2000,28(4):426-429,433. |
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| Authors: | SHI Yi-min ZHANG Wen-qing SHI Bao-xiang |
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| Abstract: | In order to improve the precision of GPS levelling, this paper puts forward a new solusion, in which the regional ellipsoidal surface is more coincident with the quasi - geoid by means of adjusting orientation of the E3 ellipsoid in several GPS points with known normal height. This surface of regional ellipsoid can be then fit by quadric surface. Compared with the prevenient solutions, this new one can proffer more precise normal height. It has been demonstrated by the application to Ningbo GPS control network. |
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| Keywords: | GPS levelling surface of regional elliposid quasi - geoid |
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