국토지리정보원 기준국 사용 Network RTK 테스트베드 구축
Construction of Network RTK Testbed Using Reference Stations of NGII
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this paper, a test bed for real-time network Real-Time Kinematic (RTK) research was constructed using reference stations of the NGII. A group of candidate station networks was derived, including three stations in Seoul. The group consisted of four stations with a distance of less than 100 km between them. Among several candidates, a network composed of stations with short distances between them and demonstrating good data quality for all reference stations was selected as the test bed. After collecting real-time data in Radio Technical Committee for Maritime services (RTCM) format from the selected stations and conducting a noise analysis on measurements, mm-level carrier phase measurement noise was confirmed. Afterwards, the user set the reference station inside the test bed and analyzed the network RTK positioning performance of the MAC method using the GPS L1 frequency as post-processing. From the result of the analysis it was confirmed that the residual error for all users was within 10 cm after applying the correction. Additionally, after determining integer ambiguities through Leastsquares AMBiguity Decorrelation Adjustment (LAMBDA), it was confirmed that the fix rate was 100%, and all ambiguities were resolved as true values.
Abstract
In this paper, a test bed for real-time network Real-Time Kinematic (RTK) research was constructed using reference stations of the NGII. A group of candidate station networks was derived, including three stations in Seoul. The group consisted of four stations with a distance of less than 100 km between them. Among several candidates, a network composed of stations with short distances between them and demonstrating good data quality for all reference stations was selected as the test bed. After collecting real-time data in Radio Technical Committee for Maritime services (RTCM) format from the selected stations and conducting a noise analysis on measurements, mm-level carrier phase measurement noise was confirmed. Afterwards, the user set the reference station inside the test bed and analyzed the network RTK positioning performance of the MAC method using the GPS L1 frequency as post-processing. From the result of the analysis it was confirmed that the residual error for all users was within 10 cm after applying the correction. Additionally, after determining integer ambiguities through Leastsquares AMBiguity Decorrelation Adjustment (LAMBDA), it was confirmed that the fix rate was 100%, and all ambiguities were resolved as true values.
참고문헌 (11)
- Dai, L., "Comparison of interpolation algorithms in network-based GPS techniques, Navigation", Journal of the Institute of Navigation, 50, pp.277~293 (2003)[DOI]
- Estey, L. H., "TEQC : The Multi-Purpose Toolkit for GPS", GLONASS Data, 1999, pp.3, 42~49
- Euler, H. -J., "Study of a Simplified Approach in Utilizing Information from Permanent Reference Station Arrays", Proceedings of the International Technical Meeting of the Satellite Division of the Institute of Navigation(ION GPS 2001), pp.379~391 (2001)
- Grejner-Brzezinska, D. A., "On accuracy and reliability of instantaneous network RTK as a function of network geometry, station separation, and data processing strategy", GPS Solutions, 9, pp.212~225 (2005)[DOI]
- Hauschild, A, "A study on the dependency of GNSS pseudorange biases on correlator spacing", GPS Solutions, 20, pp.159~171 (2016)[DOI]
- Kee, C., "Quality control algorithms on WAAS wide-area reference stations", Journal of the Institute of Navigation, 44, pp.53~62 (1997)[DOI]
- Park, B, "Study on reducing temporal and spatial decorrelation effect in GNSS augmentation system:consideration of the correction message standardization", PhD, pp.2008
- Park, B., "The compact network RTK method : An effective solution to reduce GNSS temporal and spatial decorrelation error", Journal of Navigation, 63, pp.343~362 (2010)[DOI]
- Rizos, C., "Reference station network based RTK systems-concepts and progress", Wuhan University Journal of Natural Sciences, 8, pp.566~574 (2003)[DOI]
- Takac, F., "The relationship between network RTK solutions MAC, VRSTM, PRS, FKP and i-MAX", Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), pp.348~355 (2008)
- Teunissen, P. J. G., "Performance of the LAMBDA Method for Fast GPS Ambiguity Resolution", Journal of the Institute of Navigation, 44, pp.373~383 (1997)[DOI]