似大地水准面拼接：附有限制条件平差法  

Splicing Quasi -geoid：An Adjustment Method with Constraints

作　　者：聂建亮[1] 郭春喜[1] 蒋光伟[1] 王斌[1] 王秀霞[2] 

机构地区：[1]国家测绘地理信息局大地测量数据处理中心,陕西西安710054 [2]国家测绘地理信息局第一航测遥感院,陕西西安710054

出　　处：《测绘科学与工程》2015年第6期17-20,25,共5页Geomatics Science and Engineering

基　　金：国家测绘地理信息局科技创新项目（41774015）,国家测绘地理信息局公益性科研专项资助项目（41004013）,国家自然科学基金资助项目（41274004）.

摘　　要：提出附有条件的似大地水准面拼接方法。该方法充分利用公共边界处GNSS水准点，削弱接边处系统误差影响；增加公共点在两区域拟合计算中残差相等的限制条件，提高似大地水准面成果在接边处的一致性；采用移动窗口方法进一步抑制系统误差影响，实现已有似大地水准面的拼接。以山东省和江苏省数据为例验证该方法，结果表明拼接方法不仅理论严密性，而且改善了成果的拼接效果。Splicing quasi - geoid using an adjustment with constraints is introduced in this paper. Firstly GNSS leveling points on the common borderline are used to weaken the effect of systematic error in the spliced zone. Secondly the constraints that residuals at common on points are equal in the fitting eonsistenty of the two zones are added to improve the consistenty of quasi -geoid on the borderline. At last the moving window method is employed to further control the systematic error. The data of Shandong province and Jiangsu province are used to validate the new algorithm. The result shows that the method is rigorous in theory and can improve the slicing effect.

关 键 词：限制条件 移动窗口方法 似大地水准面拼接 系统误差 

分 类 号：P223[天文地球—大地测量学与测量工程]