多星座参考站接收机钟差的估计方法研究  

Estimation of receiver clock error based on multi-constellation reference network

作　　者：汪登辉[1] 潘树国[2] 高成发[1] 王胜利[2] 

机构地区：[1]东南大学交通学院,南京210096 [2]东南大学仪器科学与工程学院,南京210096

出　　处：《测绘科学》2015年第3期16-20,共5页Science of Surveying and Mapping

基　　金：国家科技支撑计划项目(2012BAJ23B01)

摘　　要：多星座数据融合处理时,由于接收机钟差和信号传播延迟的影响,导致信号发射时刻的卫星位置不能精确求定。在定位解算里,可以通过星间差分消除与光速有关的接收机钟差影响,然而与卫星径向速度有关的接收机钟差项却得不到消除。该文详细分析了多星座接收机不同钟差值的产生原因,推导了卫星径向速度对站星距的影响,提出了一种针对多星座的单基准站接收机钟差估计方法,通过统一修正各星座卫星位置,有效消除了与卫星速度有关的接收机钟差项的误差,并且适用于存在1ms时钟跳跃的接收机,实现多星座融合的高精度定位。Due to the influence of receiver clock error and signal transfer delay,the satellite orbit position could not be accurately determined when using the navigation data.In the high-accuracy positioning,the receiver clock error related to speed of light could be eliminated by forming the single-different satellite observations.However,the clock error related to the satellite radial velocity could not be eliminated.In this paper,a single reference station receiver clock error estimation method for multi-constellation receiver was proposed,and the influence of receiver clock error and signal transfer delay on the satellite position were analyzed in unified coordinate system.The performance of the test showed that the clock error related to the satellite radial velocity could be eliminated by the correction of the satellite position.For existing 1millisecond receiver clock jumping receiver,it could effectively eliminate the receiver clock jump with high precision positioning of multi-constellation RTK.

关 键 词：接收机钟差 多星座融合 区域参考站网络 网络RTK 

分 类 号：P228.41[天文地球—大地测量学与测量工程]