摘要
以条件平差原理为基础,推导了求附合导线平差后的任一边方位角的中误差公式,传统的方法中,首先把方位角条件作为第一组条件式进行平差,然后利用第一组改正后的方位角改化二个坐标条件方程式即第二组条件式,最后解出附合导线平差后任一边方位角的权倒数,从而求出附合导线平差后任一边方位角的中误差;计算过程相当烦琐。与传统分组平差相比,本文采用的方法更简单,使学生更容易理解。
In this article, a formula of the mean square error of azimuthis derived from any sides of the connecting traverse based on the condition adjustment theory. In the conventional method, the adjustment with the azimuth conditions as the first group condition equations is done at first; then the correctional azimuth is adopted to correct the two coordinates＂ condition equations;at last, the solution of the weight reciprocals of azimuths to any sides is obtained so as to derive the mean square error of azimuth from any sides of the connecting traverseafter adjustment. Obviously, this methodis inconvenient. In this article, the method introduced is simpler and can be understood more easily, compared with the traditional way.
出处
《工程地球物理学报》
2006年第2期156-159,共4页
Chinese Journal of Engineering Geophysics
关键词
附合导线
平差值函数的中误差
测量平差
connecting traverse
mean square error of the adjustment value function
surveying
adjustment
