基于多台GPS接收机的三维姿态确定与精度分析  

3-D Attitude Determination and Accuracy Analysis Based on Multi-GPS Receivers

作　　者：胡丛玮[1] 郭敏[2] 

机构地区：[1]同济大学测量与国土信息工程系,上海200092 [2]同济大学建筑设计研究院,上海200092

出　　处：《同济大学学报（自然科学版）》2009年第8期1100-1103,共4页Journal of Tongji University:Natural Science

基　　金：国家自然科学基金资助项目(40671155)

摘　　要：根据一个模拟动态定位实例,采用多台GPS接收机动态定位,得到单历元定位结果,然后采用不同的天线组合解算姿态.结果显示,对于约5 m长宽的基线组合,获得的航向角精度约为0.05°,横滚角和纵摇角的精度约为0.2°;对于约10m长宽的基线组合,航向角精度约为0.03°,横滚角和纵摇角的精度约为0.11°.可知,姿态角的精度与纵横向的基线长度有关.当基线长度相同时,航向角的精度高于横滚角和纵滚角.其中,航向角和纵滚角的精度主要与航向长度有关,而横滚角则与横向长度有关.基线越长,对应的姿态角的精度越高.According to a simulated data set, single epoch positioning results by kinematic positioning were obtained, and then the attitude were calculated with various antenna combinations respectively. The results show that when the length of the baseline is about 5m in square, the RMS for Yaw is about ± 0.05°, while Roll and Pitch are about ± 0.2°. When the length of the baselines is about 10m in square, the RMS for Yaw is about ± 0.03°,while Roll and Pitch are about±0.11°. So the accuracy of the attitude angles has a correlation with the length of the transverse and longitudinal baselines. When the lengths of baselines are the same, the accuracy of Yaw is higher than Roll and Pitch. The accuracy of Yaw and Roll mainly depends on the lengths of the longitudinal baselines, while the accuracy of Pitch transverse denpends on the length of transverse baselines. In general, the longer the baseline is, the higher accuracy of the attitude angles will be.

关 键 词：GPS卫星定位 多基线动态定位 姿态确定 

分 类 号：P228.41[天文地球—大地测量学与测量工程]