GPS长距离参考站间低高度角模糊度快速解算方法

发布时间：2018-03-23 15:42

本文选题：GPS　切入点：网络RTK　出处：《中国矿业大学学报》2017年03期

【摘要】：提出了一种长距离全球定位系统(GPS)网络实时动态定位(RTK)参考站间低高度角卫星整周模糊度解算方法.利用L1,L2频率的观测值及严格的模糊度固定标准解算宽巷整周模糊度,将固定的宽巷整周模糊度与双频载波相位整周模糊度的整数线性关系作为约束条件,结合双频载波相位无电离层组合观测值估计双频载波相位整周模糊度和相对天顶对流层延迟误差,并搜索确定双频载波相位整周模糊度.利用固定模糊度的卫星大气延迟误差确定低高度角卫星的双频载波相位宽巷整周模糊度,将固定模糊度的卫星双频无电离层组合观测值与低高度角卫星双频无电离层组合值进行方程联立,同时利用低高度角卫星双差宽巷整周模糊度与双频载波相位整周模糊度的线性约束关系,进一步确定低高度角卫星的双频载波相位整周模糊度.使用实测的连续运行参考站(CORS)网GPS双频观测数据进行算法验证,结果表明:该方法可正确有效地实现参考站间低高度角卫星的载波相位整周模糊度的快速解算.
[Abstract]:In this paper, a method for calculating integer ambiguity of low altitude satellite at low altitude angle between reference stations in real time dynamic positioning system (RTK) network of long distance global positioning system (GPS) network is presented. The ambiguity of wide roadway is calculated by using the observed values of L1 / L2 frequency and strict fixed ambiguity standard. The integer linear relation between the fixed integer ambiguity of wide lane and the integer ambiguity of dual frequency carrier phase is taken as the constraint condition. Combined with double frequency carrier phase ionospheric combined observations, the integer ambiguity of dual frequency carrier phase and relative zenith tropospheric delay error are estimated. The ambiguity of dual-frequency carrier phase is determined by searching and determining the integer ambiguity of dual-frequency carrier phase, and the ambiguity of dual-frequency carrier phase wide lane of low-altitude satellite is determined by using the satellite atmospheric delay error with fixed ambiguity. The equations of the fixed ambiguity satellite double frequency ionosphere-free combined observations and the low altitude angle satellite double frequency ionosphere-free combination values are simultaneous. At the same time, the linear constraint relationship between the integer ambiguity of dual-difference wide lane and the integer ambiguity of dual-frequency carrier phase is used. The full cycle ambiguity of dual-frequency carrier phase of low-altitude satellite is further determined. The algorithm is verified by using the measured GPS dual-frequency observation data of continuous operating reference station (GPS) network. The results show that this method can accurately and effectively solve the integer ambiguity of carrier phase of the low altitude satellite between reference stations.
【作者单位】：辽宁工程技术大学测绘与地理科学学院;德国地学研究中心;
【基金】：国家重点研究发展计划项目(2016YFC0803102) 国家自然科学基金项目(41504010,41504030) 辽宁省高等学校创新团队项目(LT2015013) 辽宁省博士启动基金项目(20141141,201501126)
【分类号】：P228.4

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