流动比较法的设计与实现

光电测距仪（含全站仪）的加常数是仪器测量结果的改正项目，是仪器检定项目非常重要的一项。本文结合光电测距仪计量检定规程的要求，从加常数的测量原理、方法、不确定度分析等方面入手，提出了检测测距仪加常数的一种新方法——流动比较法，分析了流动比较法的设计与实现方法，分析了测量不确定度，通过与经典的六段法相比较，论证了流动比较法的可行性。

Designation and Realization of Ambulatory and Comparable Method

The additive constant of the electro-optical distancemeasuring instrument and the total station instrument are the correction of the survey results using these instruments. The calibration of the additive constant is very important during the calibration of surveying andmapping in- strument. In this paper, a new calibration technology of additive constant, named ambulatory and eomparablemethod, is according to the specifications for calibration of electro-optical distaneemeter, and based on themeasuring principle andmethod and the analysis of the uncertainty. The method of the design and realizition and the uncertainty of measurement of the new method are analyzed. The excellences of the new method are compared with the classic method of six segments combination. The feasibility of the new method is demonstrated.