摘要
以车载移动测量系统为应用背景,研究DMI在车载测量系统中的作用及检校方法。采用激光跟踪仪实时测量行驶车辆点位坐标,计算出精确的行车路程,同时记录DMI的脉冲个数,将多次获得的测量数据进行最小二乘拟合,得到最优的尺度因子估值。本文围绕全站仪、激光跟踪仪对系统进行了全面的分析和实验。经过后期数据处理,得以验证采用激光跟踪仪对移动测量系统DMI检校比常规方法在精度上有较大提高,取得了一定的工程应用价值。
This paper takes the Vehicle--borne mobile mapping system as the application background, studies DMI＇s function and Calibration method in the Vehicle--borne mobile mapping system. Measure the real-time coordinates of the vehicle with the laser tracker, calculate the precise driving distance, record the pulse integer of DMI at the same lime, make lots of surveying data for least square fit, getting the most superior scale factor valuation. This article carries on systematic analysis and experiment comprehensively around the total station and the laser tracker. Confirm the precision improved greatly using the laser tracker to the mobile mapping system through data processing in the end. It has achieved a certain project application value.
出处
《北京测绘》
2015年第5期28-30,共3页
Beijing Surveying and Mapping
关键词
车载移动测量系统
DMI
尺度因子
激光跟踪仪
最小二乘
Vehicle-borne mobile mapping system
DMI
Scale factor
Laser Tracker
The least square method
