Inconsistency between Maps and Satellite Positioning Results Caused by Crustal Movements

Yuki Ichikawa and Mikihiro Hosoi

Peer Reviewed

Abstract: In recent years, with the spread of smartphones and car navigation systems, the fact that the result of satellite positioning and the position of the map are mismatched has come to surface. One factor is crustal movements, and now in Japan there is Semi-Dynamic Correction to correct distortion of crustal movements. However, this correction method is for interferometric positioning in surveying and not for matching results of point positioning to the map. In the past, because the accuracy of point positioning was approximately several tens of meters, it was not important to consider crustal deformation. However, due to advances in technology, highly accurate point positioning such as precise point positioning (PPP) becomes possible, and crustal deformation correction is necessary to maintain consistency between satellite positioning results and maps. In this paper, we present a correction method using the published results of the continuously operating reference station (CORS) and show the effects of this method. In this method, the crustal deformation amount obtained from the analysis result of CORS is generated by the Kriging method, correction parameters are generated on the lattice points of the grid, and bilinear interpolation is performed within the lattice. This method is called Semi-Dynamic Reduction (SD/R). For verification of this method, we used the QZSS centimeter level augmentation service (CLAS) and used real time kinematic PPP (RTK-PPP) results of control stations in Tohoku region. As a result of comparison with control point survey results, it was found that horizontal correction by SD/R is effective.
Published in: Proceedings of the ION 2017 Pacific PNT Meeting
May 1 - 4, 2017
Marriott Waikiki Beach Resort & Spa
Honolulu, Hawaii
Pages: 930 - 937
Cite this article: Ichikawa, Yuki, Hosoi, Mikihiro, "Inconsistency between Maps and Satellite Positioning Results Caused by Crustal Movements," Proceedings of the ION 2017 Pacific PNT Meeting, Honolulu, Hawaii, May 2017, pp. 930-937.
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