多点后方交会及基准点稳定性分析  

Multipoint resection and stability analysis of datum point

作　　者：孙泽信[1] 庞逸群 陈小浩[1] 刘宁[1] 

机构地区：[1]江苏省交通规划设计院股份有限公司,江苏南京211100 [2]南京地铁资源开发有限公司,江苏南京211005

出　　处：《测绘工程》2014年第8期15-18,共4页Engineering of Surveying and Mapping

摘　　要：利用间接平差法推导多点后方交会待定点坐标及其精度评定模型,并采用后验方差卡方检验法及针对残差t检验法对基准点的稳定性进行分析,可以较为快速识别不稳定基准点,从而提高多基点后方交会的设站精度。工程应用实例表明,方法在实际工程中具有较高的应用价值。The coordinate calculation and accuracy evaluation model of multipoint resection are deduced by use of the indirect adjustment,and variance of unit weight chi-square test and t test for residual are adopted on the stability analysis of datum point,which can identify the instability datum point quickly,thus improving the station accuracy of the multipoint resection,Combined with some engineering example,the result shows that the method has a good value in practical engineering.

关 键 词：多点后方交会 后验方差卡方检验法 t检验法 基准点 稳定性 

分 类 号：P207[天文地球—测绘科学与技术] TU198[建筑科学—建筑理论]