后方交会方法及其精度评定问题的研究

Resection Method and Its Precision Evaluation

基于3个已知点的后方交会,推导了测角、测边后方交会的近似精度评定公式以及针对起算数据误差时的严密精度评定公式,并用间接平差方法对边角同测后方交会进行了严密的平差计算与精度评定;通过观测实验分别对测角、测边、边角同测后方交会的精度及坐标进行了比较分析。

Based on the given three-point resection, this paper deduces the formula of approximate precision evaluation and one of rigorous precision evaluation for angle and side resection aimed at initial data errors, calculates the rigorous average errors and evaluates the precision of side-angle resection by means of indirect adjustment, and analyzes their precision and coordinates through observing the experiments.