| 大范围网络RTK基准站间整周模糊度实时快速解算 |
| |
| 引用本文： | 王建敏,李亚博,马天明,祝会忠.大范围网络RTK基准站间整周模糊度实时快速解算[J].测绘通报,2017(10). |
| |
| 作者姓名： | 王建敏 李亚博 马天明 祝会忠 |
| |
| 作者单位： | 辽宁工程技术大学测绘与地理科学学院,辽宁 阜新,123000 |
| |
| 摘 要： | 网络RTK是目前实现高精度实时动态定位的重要手段之一,而网络RTK高精度定位的关键问题是基准站间整周模糊度的实时快速准确固定。对于大范围网络RTK,由于基准站间距离的增加,电离层延迟误差、对流层延迟误差和卫星轨道误差相关性降低,导致基准站间整周模糊度不能快速准确地固定,因此本文提出了一种大范围网络RTK基准站间整周模糊度固定算法。该算法首先利用L1、L2载波相位观测值和P1、P2伪距观测值解算基准站间的双差宽巷模糊度;然后采用Saastamoinen模型和Chao映射函数模型相结合解算双差对流层延迟误差,并将双差宽巷模糊度作为L1、L2双差载波相位整周模糊度的约束关系来确定L1、L2双差载波相位整周模糊度;最后采用CORS站的实测数据进行试验,并将本文的试验结果同GAMIT软件的解算结果进行比对,结果表明该算法可以快速准确地实现单历元双差载波相位整周模糊度的固定。
|
| 关 键 词： | 大范围 网络RTK 基准站 整周模糊度 对流层延迟 |
Real Time and Fast Algorithm for Integer Ambiguity of Reference Stations in Large-scale Network RTK |
| |
| WANG Jianmin,LI Yabo,MA Tianming,ZHU Huizhong.Real Time and Fast Algorithm for Integer Ambiguity of Reference Stations in Large-scale Network RTK[J].Bulletin of Surveying and Mapping,2017(10). |
| |
| Authors: | WANG Jianmin LI Yabo MA Tianming ZHU Huizhong |
| |
| Abstract: | Network RTK,at present,is one of the important means to realize high precision and real-time dynamic positioning,while the key problem of high precision positioning of network RTK is the real-time, fast and accurate fix of the integer ambiguity between reference stations.For a wide scale network RTK, because the distance between reference stations has increased and the ionospheric delay error、the troposphere delay error and satellite orbit error have a low correlation that leads to integer ambiguity in the reference stations can not solve quickly and accurately,therefore this paper presents a method that integer ambiguity algorithm in a wide scale network RTK reference stations.Firstly,this algorithm takes advantage of L1、L2 carrier phase observations and P1、P2 pseudorange observations to calculate the double difference wide lane ambiguity between reference stations, and then to solve double difference troposphere delay by combining Saastamoinen model with Chao mapping function model,at the same time,the thesis takes the double difference wide lane ambiguity regard as constraint condition of L1、L2 double difference the carrier phase integer ambiguity so as to make sure L1、L2 double difference carrier phase integer ambiguity. The experiment was carried out by using the measured data of CORS,at the same time,the experimental results of this paper are compared with the results of GAMIT software show that the algorithm can achieve single epoch double difference carrier phase fixed integer ambiguity stably and accurately. |
| |
| Keywords: | large scale network RTK reference station integer ambiguity tropospheric delay |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
