3Dsurs系统姿态精度分析  

Attitude precision analysis of 3Dsurs

作　　者：王冬[1] 卢秀山[1] 刘凤英[1] 

机构地区：[1]山东科技大学地球信息科学与工程学院测绘科学与工程系,山东青岛266510

出　　处：《测绘科学》2008年第3期15-16,21,共3页Science of Surveying and Mapping

基　　金：国家"863"计划资助项目(2003AA133040)

摘　　要：GPS是3Dsurs系统中关键传感器之一,用于测量车载平台的位置和姿态角。姿态角获取是3Dsurs系统关键技术之一,其精度决定系统所能达到的测量精度。本系统中使用NovAtel DL-4型双频、高精度、高采样率GPS,采用差分后处理方法,数据处理中利用三台GPS间固定位置关系进行约束平差,并采用滤波方法提高解算精度。多组实验结果表明:使用GPS测姿可获得较高精度,系统中三个姿态角的精度有差异,航向角的精度最高,横滚角和俯仰角的精度接近。GPS is a key sensor in the 3Dsurs. It is used to determine position and attitude of vehicle-borne platform. Attitude determination is a main technique of 3Dsurs. Attitude precision decides the system precision. The NovAtel DL-4 GPS is applied in the system. It has high precision, high sampling rate and difference post processing ability. Fix position relationship is used for constraint adjustment, and filter method for improvement precision. The results of tests indicate that GPS attitude determination can get high precision. There are difference among three attitude angles, the yaw angle is highest, the roll and pitch angles are close.

关 键 词：3Dsurs系统 姿态测量 GPS 车载平台 

分 类 号：P228.4[天文地球—大地测量学与测量工程] TJ765.2[天文地球—测绘科学与技术]