四种常用坐标测量方法的精度对比

由于高精度全站仪的普及和使用，极坐标法、角度前方交会法、边长前方交会法、边角前方交会法在平面控制点加密或测点坐标测量中得到广泛采用。推导4种测量方法点位中误差的计算方法，针对工业测量中短基线和工程测量中较长基线的情况，结合确定性的观测仪器和观测条件，计算点位中误差的大小，对比分析不同测量方法的精度、特点和应用条件，计算、分析的结果和结论对实际测量方法的选择和测量工作的开展具有较好的参考价值。

Precise contrast for four coordinate surveying methods

Because the＇Total Station is spread and used, the method of polar coordinate, angular intersection, linear intersection, linear-angular intersection are widely used in surveying the coordinate of densification control point and observation point. The calculation method of mean square error of a point about four survey methods is deduced. In allusion to the short baseline in industry survey and relatively long baseline in engineering survey, combined with definite observation instrument and observation condition, the result of mean square error of a point is calculated, the precise and characteristic as well as application condition about four survey methods is contrasted and analyzed. The result and conclusion of calculation and analysis has better reference value for selecting survey method and carrying out work.