Korean SBAS Development Progress and Test Results of Pseudolite-Based SBAS Demo System

D. Han, H. Yun, O. Kim, C. Kim, C. Kee

Abstract:	Korean government developed the National GNSS Master Plan to support the GNSS development in Korea. Development of Satellite Based Augmentation System (SBAS) was included in the plan and Korea started to develop SBAS in 2002. Development of Korean SBAS is divided into 3 phases. In phase 1, from 2002 to 2004, the initial development was conducted. In phase 2, from 2010 to 2014, real-time demo system will be developed to demonstrate the feasibility of SBAS in Korea. In phase 3, from 2014 to 2022, GEO satellite will be launched and open service will be provided. Multi frequency SBAS and interoperation with other SBASs will be considered. In this paper, past works and current status of Korean SBAS development will be described. Currently, phase 2 is ongoing and main goal of this project is to develop real-time demo system. Prior to develop full-operational system, pseudolite-based demo system will be developed to reduce the development risk and cost. This system consists of Wide area Reference Stations (WRS), Wide area Master Station (WMS) and pseudolite. In this system, ground systems including WRS and WMS are similar to other SBASs but GEO satellite and Ground Uplink Station (GUS) are replaced by pseudolite. WRSs were developed using NDGPS infrastructure and real-time WRS software for pre-processing measurement and transmitting data to WMS was also developed. After WMS software generates augmenting message, pseudolite is used to broadcast augmenting signals. To test the performance of developed system, some tests using RF data logger and broadcaster were conducted. Positioning results of commercial receiver will be described to validate the augmenting signal.
Published in:	Proceedings of the 2014 International Technical Meeting of The Institute of Navigation January 27 - 29, 2014 Catamaran Resort Hotel San Diego, California
Pages:	219 - 222
Cite this article:	Han, D., Yun, H., Kim, O., Kim, C., Kee, C., "Korean SBAS Development Progress and Test Results of Pseudolite-Based SBAS Demo System," Proceedings of the 2014 International Technical Meeting of The Institute of Navigation, San Diego, California, January 2014, pp. 219-222.
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