A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations
In the face of a complex observation environment, the solution of the reference station of the ambiguity of network real-time kinematic (RTK) will be affected. The joint solution of multiple systems makes the ambiguity dimension increase steeply, which makes it difficult to estimate all the ambiguit...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-12-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/1/165 |
| _version_ | 1797497611357257728 |
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| author | Shouhua Wang Zhiqi You Xiyan Sun |
| author_facet | Shouhua Wang Zhiqi You Xiyan Sun |
| author_sort | Shouhua Wang |
| collection | DOAJ |
| description | In the face of a complex observation environment, the solution of the reference station of the ambiguity of network real-time kinematic (RTK) will be affected. The joint solution of multiple systems makes the ambiguity dimension increase steeply, which makes it difficult to estimate all the ambiguity. In addition, when receiving satellite observation signals in the environment with many occlusions, the received satellite observation values are prone to gross errors, resulting in obvious deviations in the solution. In this paper, a new network RTK fixation algorithm for partial ambiguity among the reference stations is proposed. It first estimates the floating-point ambiguity using the robust extended Kalman filtering (EKF) technique based on mean estimation, then finds the optimal ambiguity subset by the optimized partial ambiguity solving method. Finally, fixing the floating-point solution by the least-squares ambiguity decorrelation adjustment (LAMBDA) algorithm and the joint test of ratio (R-ratio) and bootstrapping success rate index solver. The experimental results indicate that the new method can significantly improve the fixation rate of ambiguity among network RTK reference stations and thus effectively improve the reliability of positioning results. |
| first_indexed | 2024-03-10T03:21:43Z |
| format | Article |
| id | doaj.art-04fbaffd47e747629bccd1d9d220113d |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:21:43Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-04fbaffd47e747629bccd1d9d220113d2023-11-23T12:17:55ZengMDPI AGSensors1424-82202021-12-0122116510.3390/s22010165A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference StationsShouhua Wang0Zhiqi You1Xiyan Sun2College of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, ChinaCollege of Information and Communication, Guilin University of Electronic Technology, Guilin 541004, ChinaIn the face of a complex observation environment, the solution of the reference station of the ambiguity of network real-time kinematic (RTK) will be affected. The joint solution of multiple systems makes the ambiguity dimension increase steeply, which makes it difficult to estimate all the ambiguity. In addition, when receiving satellite observation signals in the environment with many occlusions, the received satellite observation values are prone to gross errors, resulting in obvious deviations in the solution. In this paper, a new network RTK fixation algorithm for partial ambiguity among the reference stations is proposed. It first estimates the floating-point ambiguity using the robust extended Kalman filtering (EKF) technique based on mean estimation, then finds the optimal ambiguity subset by the optimized partial ambiguity solving method. Finally, fixing the floating-point solution by the least-squares ambiguity decorrelation adjustment (LAMBDA) algorithm and the joint test of ratio (R-ratio) and bootstrapping success rate index solver. The experimental results indicate that the new method can significantly improve the fixation rate of ambiguity among network RTK reference stations and thus effectively improve the reliability of positioning results.https://www.mdpi.com/1424-8220/22/1/165network RTKambiguity resolutionpartial ambiguity fixationrobust extended Kalman filtering |
| spellingShingle | Shouhua Wang Zhiqi You Xiyan Sun A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations Sensors network RTK ambiguity resolution partial ambiguity fixation robust extended Kalman filtering |
| title | A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations |
| title_full | A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations |
| title_fullStr | A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations |
| title_full_unstemmed | A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations |
| title_short | A Partial Carrier Phase Integer Ambiguity Fixing Algorithm for Combinatorial Optimization between Network RTK Reference Stations |
| title_sort | partial carrier phase integer ambiguity fixing algorithm for combinatorial optimization between network rtk reference stations |
| topic | network RTK ambiguity resolution partial ambiguity fixation robust extended Kalman filtering |
| url | https://www.mdpi.com/1424-8220/22/1/165 |
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