介绍了中丝视距法测量水平距离和高差的基本原理及计算公式，并对其测量精度进行了分析。
This paper introduces a basic principle and calculation formula of measuring the horizontal distance and elevation difference by central hair stadia, and analyzes its measuring precision.
距离测量误差包含测量噪声和非视距误差两部分，其中非视距误差是位置估计的主要误差来源。
The distance measurement errors include errors of measuring noise and non-line of sight, of which NLOS error is the main source of error in location estimation.
本文研究提出了在前后视距不相等的情况下进行精密水准测量的方法，分析了具体的实测方案。
A method of precise levelling under unequal back-and fore-sight length is studied and presented in this paper.
无须跑尺自计视距仪是一种新式的测量仪器，经过研究，我们已初步试制成功。
The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.
无须跑尺自计视距仪是一种新式的测量仪器，经过研究，我们已初步试制成功。
The no staff and self-reducing tacheometer is a new type of surveying instrument designed and constructed by a group of teachers and students of our department.
应用推荐