图根支导线测角中误差计算公式之讨论

本文结合实例讨论了小地区平面控制测量中多条图根支导线测角中误差m角平的三种计算方法,其中方法二全面考虑多条图根支导线的测量误差,其计算测角中误差m角平的公式也是最值得推广的。按照方法二可计算出各条图根支导线的测站点圆周角闭合差是否超过±40″,各条支导线的角度闭合差fβj是否超过40 n1″,测角中误差m角平是否超过21.2″,由此可以判断测角精度是否合格,在测量工作中具有一定的实用性。

Discussion on the calculation method of mean error of angle for detail unclosed traverse

This paper discusses three calculation methods of mean error of angle for many detail unclosed traverse in small area horizontal control survey.Among these methods,error of survey of many detail unclosed traverse is comprehensive considered in second method,and its formula for calculating mean error of angle is worth to be spreaded.According to the second method,we can judge that if error of closure of horizon in many detail unclosed traverse exceed 40 second,if error of closure of angles exceed 40n1 second,if mean error of angle exceed 21.2 second and if the angular accuracy is qualified,so the second method is practical in survey work.