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Sensors 2017, 17(4), 834;

Modeling DGNSS Pseudo-Range Correction Messages by Utilizing Satellite Repeat Time

Department of Geoinformatic Engineering, Inha University, Incheon 22212, Korea
Earthquake and Volcano Research Division, Earthquake and Volcano Center, Korea Meteorological Administration, Seoul 07062, Korea
Author to whom correspondence should be addressed.
Received: 8 February 2017 / Revised: 6 April 2017 / Accepted: 7 April 2017 / Published: 11 April 2017
(This article belongs to the Section Remote Sensors)
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We developed and validated a pseudo-range correction (PRC) modeling system that can prevent degradation of positioning accuracy even in situations where one cannot obtain PRC messages for Differential Global Navigation Satellite System (DGNSS). A PRC modeling scheme was devised based on the repeat time of GNSS satellites and previously-collected PRC data. The difference between the modeled and real PRC values observed at the reference station showed a bias error of about ±1.0 m and a root mean square error (RMSE) less than 1.5 m. When we applied the predicted PRC to Differential Global Positioning System (DGPS) and Differential BeiDou (DBDS) positioning, horizontal RMSE values were at a level of 1.0 m, while vertical RMSE was in the range of 1.8–3.0 m. We found that modelled PRCs can provide positioning results similar to those based on real PRCs and can provide significant improvement over standalone positioning without PRCs. View Full-Text
Keywords: DGNSS; GNSS; GPS; BeiDou; pseudo-range correction DGNSS; GNSS; GPS; BeiDou; pseudo-range correction

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Sohn, D.-H.; Park, K.-D.; Tae, H. Modeling DGNSS Pseudo-Range Correction Messages by Utilizing Satellite Repeat Time. Sensors 2017, 17, 834.

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