GPS/BDS组合多天线定姿与精度分析  

GPS/BDS integrated attitude determination based on multi-antenna GNSS and accuracy analysis

作　　者：杨鸿毅 王潜心[1] 胡超[1] 毛亚[1] 柴大帅 YANG Hongyi;WANG Qianxin;HU Chao;MAO Ya;CHAI Dashuai(School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou 221116, China)

机构地区：[1]中国矿业大学环境与测绘学院,江苏徐州221116

出　　处：《合肥工业大学学报（自然科学版）》2020年第6期818-822,854,共6页Journal of Hefei University of Technology：Natural Science

基　　金：江苏省研究生科研与实践创新计划资助项目(SJCX18-0668)。

摘　　要：文章以全球卫星导航系统(global navigation satellite system,GNSS)多天线定姿原理为基础,通过自编程序分别实现伪距与载波定姿、直接法与最小二乘法定姿,并在全球定位系统(Global Positioning System,GPS)定姿基础上加上北斗卫星导航系统(BeiDou Navigation Satellite System,BDS)数据,实现GPS/BDS组合定姿,分析了单GPS和GPS/BDS组合定姿精度。实验利用2根天线进行静态数据采集,模拟载体静止状态。伪距与载波定姿对比实验表明,载波解算基线的精度能达到mm级,载波测量定姿精度优于伪距测量;直接法和最小二乘法定姿对比实验表明,最小二乘法和直接法定姿略微有所差别,性能基本相当;单GPS和GPS/BDS组合定姿对比实验表明,GPS/BDS组合定姿精度略优于单GPS。GPS/BDS组合多天线定姿解算航向角和俯仰角的标准差分别为0.0051°、0.0126°,具备高精度定姿能力。Based on the principle of global navigation satellite system(GNSS)multi-antenna attitude determination,the attitude parameters are obtained by self-programming.And the accuracy of attitude parameters by pseudo-range measurement and carrier phase measurement,direct method and least square method is assessed.Then,BeiDou Navigation Satellite System(BDS)data is integrated with Global Positioning System(GPS)data,and the accuracy of attitude parameters by the single GPS and the integrated GPS/BDS is assessed.The results of three experiments with data collected from two static antennas indicate that the accuracy of the baseline vector error can achieve millimeters with carrier phase data.The accuracy of carrier phase measurement is better than that of pseudo-range measurement in determining attitude.And the least square method is similar to the direct method,the integrated GPS/BDS is better than single GPS.When using integrated GPS/BDS to determine attitude,the standard deviation of yaw is 0.0051°,and the standard deviation of pitch is 0.0126°.It can be used to high precision attitude determination.

关 键 词：GPS/BDS组合 定姿 直接法 最小二乘法 基线 

分 类 号：P228.43[天文地球—大地测量学与测量工程]