GNSS接收机天线相位中心偏差的测定与算法

发布时间：2018-01-19 08:16

本文关键词： GNSS 接收机天线相位中心偏差接收机天线相位中心变化测定模型北斗卫星导航系统　出处：《安徽理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：随着全球导航定位系统的迅速发展,其应用的领域也越来越广,用户对全球导航定位系统的导航和测量的精度也提出了更高的要求。而GNSS接收机天线相位中心的偏差和相位中心变化对高精度导航定位和测量具有一定的误差影响,因此在高精度的导航和测量应用中需加以考虑。GNSS接收机天线相位中心偏差是由于接收机天线的电气中心和几何中心不一致而引起的。不同类型的接收机,以及接收到不同的信号频率其接收机天线相位中心偏差和变化都是不一样的,而且接收机天线相位中心变化会随着卫星的高度角和方位角的变化而变化,并不能通过差分的方式加以清除,因此需要通过建立测定模型加以改正。本文研究总结了 GNSS接收机天线相位中心偏差和变化产生的原因以及国内外学者对GNSS接收机天线相位中心偏差和变化测定的理论方法。在此基础上,通过野外短基线的实验数据采集,用旋转观测法测定GNSS接收机天线相位中心在水平方向上的偏差,交换天线法测定GNSS接收机天线相位中心在垂直方向上的偏差,此方法只需两台GNSS接收机,实验操作简单,并对测定的结果进行精度的评定。GNSS接收机天线相位中心变化的测定是在接收机天线相位中心偏差的基础上进行的,目前GNSS接收机天线相位中心变化测定的方法有微波暗室法,自动机器人法和相对天线相位观测的方法。本文运用相对天线相位观测的方法和理论,建立一套接收机天线相位中心变化测定的方法,利用野外的观测数据测定GNSS接收机天线相位中心的变化,并将测定的结果与参考的标定值比对进行精度评定,结果表明建立测定方法是可行的,并用此测定方法测定我国北斗卫星导航系统接收机天线相位中心的变化值,对提高我国北斗卫星导航定位的精度具有一定的参考价值。
[Abstract]:With the rapid development of global positioning system, its applications are more and more widely, the user accuracy of navigation and measurement of global positioning system is also put forward higher requirements. And the deviation and phase center variation of GNSS receiver antenna phase center has certain influence on the error of high precision navigation and positioning and measurement, so in high precision surveying and navigation applications needed to be considered.GNSS receiver antenna phase center deviation is due to electrical Center receiver antenna and the geometric center caused inconsistency. Different types of receivers, and received different signal frequencies of the antenna phase center deviation and the change is not the same, and receiver antenna phase the center will change with the change of altitude angle and azimuth angle of satellites, and not through the difference way to be cleared, so need to pass To establish a determination model corrected. This paper summarizes the theory and method of the cause of GNSS receiver antenna phase center deviation and change of domestic and foreign scholars on the determination of GNSS receiver antenna phase center deviation and change. On this basis, through the field of short baseline experiment data collection, determination of GNSS receiver antenna phase center in the horizontal direction the deviation of rotating observation method, antenna swapping method for the determination of GNSS receiver antenna phase center deviation in the vertical direction, this method needs only two GNSS receivers, the experimental operation is simple, determination and evaluation of.GNSS receiver antenna phase center variation on accuracy of test results is based on the receiver antenna phase center deviation the current method of GNSS receiver antenna phase center variation determination of the microwave anechoic chamber, automatic robot and relative antenna phase Method of observation. The theory and method of using relative antenna phase observation, establish a method for the determination of a receiver antenna phase center variation, variation determination of GNSS receiver antenna phase center using the field observation data, and the determination results with the reference calibration value of alignment accuracy assessment results show that the proposed method is feasible for determination of the change and determination of the Beidou satellite navigation system receiver antenna phase center uses this method for the determination of the value, which has a certain reference value for improving China's Beidou satellite navigation and positioning accuracy.

【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：P228.4

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