基于距离和姿态观测量的GNSS基线网平差方法  

A GNSS Baseline Network Adjustment Method Based on Length and Attitude Measurements

作　　者：白征东[1] 汤晓禹 项伟[1,2] 

机构地区：[1]清华大学地球空间信息研究所,北京100084 [2]空军工程设计研究局,北京100076

出　　处：《测绘通报》2017年第1期39-42,共4页Bulletin of Surveying and Mapping

摘　　要：针对目前单历元算法需要连续观测较长时间才能够得到较为精确的解算结果的问题,利用载具同时架设3台GNSS接收机,获得基线观测量,同时事先精确测定接收机之间的距离,并利用陀螺仪获得载具的姿态角,通过增加距离和姿态观测量,与基线观测量共同进行平差处理,可以得到单历元较为稳定而精确的坐标解算结果。试验表明,平面精度在10 mm以内,高程精度在3 cm以内,相较于不添加距离和姿态观测量的结果精度提高了15%以上。According to the fact that it takes a lot of time to obtain high precision results by single epoch algorithm,three GNSS receivers are erected on a carrier. The distance between the receivers are measured in advance,and the attitude angles of the carrier are measured by a gyroscope. Thus,the distance and attitude constraints are added to the baseline adjustment. Then a relatively stable and accurate result is achieved. The experiment results show that the maximum deviations are less than 10 mm in the east and north directions,30 mm in the elevation direction. The accuracy of the result is improved by more than 15% compared to the result without distance and attitude constraints.

关 键 词：GNSS 姿态约束 距离约束 平差处理 

分 类 号：P228[天文地球—大地测量学与测量工程]