车载移动测量系统方位角对比与分析  

Comparison and Analysis of Azimuth of Mobile Mapping System

作　　者：钱瑾斐 姚连璧[1,2] 

机构地区：[1]同济大学测绘与地理信息学院,上海200092 [2]同济大学现代工程测量国家测绘地理信息局重点实验室,上海200092

出　　处：《测绘通报》2017年第2期49-53,共5页Bulletin of Surveying and Mapping

基　　金：国家863计划(2013AA12A206);上海市自然科学基金(15ZR1443700);"十三五"国家重点研发计划(2016YFB1200602-02)

摘　　要：方位计算对移动测量计算具有重要的意义,本文通过移动测量系统的实测数据,分别在静态环境与动态环境下比较车载移动测量系统的惯性测量单元(IMU)、双天线及轨迹拟合方位角。结果表明:在静态环境下,双天线方位角精度高于IMU方位角的精度;在动态环境下,IMU方位角与拟合方位角在直线段处的表现较好,而在转弯处,双天线方位角的绝对精度更高。Orientation is of great importance for mobile mapping survey.The azimuths of inertial measure unit（IMU）,dual antenna GNSS and trajectory fitting in static and dynamic environment are analyzed by measured data from a mobile mapping system.The result shows that azimuth of dual antenna GNSS is more precise than azimuth of IMU in static environment.While azimuths of IMU and trajectory fitting have better performance in dynamic environment,azimuth of dual antenna GNSS has higher absolute precision in the curve sections.

关 键 词：移动测量系统 方位角 惯性测量单元 双天线GNSS 轨迹拟合 

分 类 号：P237[天文地球—摄影测量与遥感]