A New Approach for Satellite Based GNSS Augmentation System: from Sub-meter to Better than 0.2 Meter Era

Junping Chen, Yize Zhang, Sainan Yang, Jungang Wang

Abstract:	In this paper we propose a new type of SBAS correction information: zone-correction. It is defined to augment to the existing SBAS long-term and fast corrections, and applies to regions covering up to one million square kilometers. To evaluate the performance of the new zone-correction, we have design a data processing approach for a simulated SBAS system. In the first step, real-time data of a list of GNSS reference stations is used to calculate augmentation information, namely the long-term correction, fast correction, and zone-correction. In the second step, the augmentation information is broadcast to users through simulated streams. In the final step, user stations apply the augmentation information and perform real-time kinematic PPP to derive their positions. GNSS data of the Crustal Movement Observation Network of China (CMONOC) is used to test and verify the new approach. We selected 20 well distributed stations of the CMONOC network as reference stations, and the other 240 stations are used for user positioning tests. One week data are processed and results show that convergence time of PPP using the new augmentation information is shorter than 2 minutes and positioning accuracy is around 0.1 and 0.15 meter in horizontal and vertical directions.
Published in:	Proceedings of the ION 2015 Pacific PNT Meeting April 20 - 23, 2015 Marriott Waikiki Beach Resort & Spa Honolulu, Hawaii
Pages:	180 - 184
Cite this article:	Chen, Junping, Zhang, Yize, Yang, Sainan, Wang, Jungang, "A New Approach for Satellite Based GNSS Augmentation System: from Sub-meter to Better than 0.2 Meter Era," Proceedings of the ION 2015 Pacific PNT Meeting, Honolulu, Hawaii, April 2015, pp. 180-184.
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