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

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.