Deformation Monitoring with Single Frequency L1 Receivers

Tetsuya Iwabuchi, James Johnson, Shaun Cummins, Christian Rocken, Yoshikatsu Iotake, Masayuki Kanzaki

Abstract:	We have developed real-time ionosphere correction system for L1 GPS receiver network using satellitespecific ionospheric delay estimate from L1/L2 dual frequency GPS network. The correction system can be applied for L1 rover and static baseline processings up to 30 km. Repeatability of the rover kinematic processing is about 10 mm and better than 10 mm for north and east component, respectively, and 25 mm for height component. More than 93% of L1 ambiguities were resolved for the processing. The static L1 processing with the ionosphere correction shows the convergence of coordinate solutions within 15 minutes for 1 cm accuracy, while L1 processing without correction takes more than 50 minutes to get convergence and it shows drift of about a few cm in coordinate estimates. Relative tropospheric delay estimates from the system showed good agreement with those from independent tropospheric delay processing. The results suggest that the ionosphere correction system can be used for quick surveying, continuous monitoring of deformations, and observation of precipitable water vapor (from zenith tropospheric delay) for weather forecast with rapid update.
Published in:	Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008) September 16 - 19, 2008 Savannah International Convention Center Savannah, GA
Pages:	3000 - 3008
Cite this article:	Iwabuchi, Tetsuya, Johnson, James, Cummins, Shaun, Rocken, Christian, Iotake, Yoshikatsu, Kanzaki, Masayuki, "Deformation Monitoring with Single Frequency L1 Receivers," Proceedings of the 21st International Technical Meeting of the Satellite Division of The Institute of Navigation (ION GNSS 2008), Savannah, GA, September 2008, pp. 3000-3008.
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