Experimental analysis of traffic-oriented GNSS high-precision positioning integrity

doi:10.13474/j.cnki.11-2246.2023.0175

Abstract

Abstract: With the application of differential GNSS and other high-precision positioning technologies in land and marine fields gradually becoming popular, higher requirements for reliability, accuracy and continuity of high-precision positioning have been put forward, and how to develop an integrity system suitable for high-precision positioning applications based on aviation integrity theory and technology has become one of the current research hotspots. In this paper, we analyze the minimum performance requirements for the integrity of high-precision positioning service system and user terminal based on aviation integrity theory and the characteristics of domestic road traffic, design road experiments, and verify the GNSS integrity index of road traffic in a wide range of scenarios using low-cost high-precision modules. The test results show that the index availability of high-speed open/obscured scenes is 73.05%/52.42% and 79.27%/71.30% in the heading direction and left-right direction, respectively; the index availability of low-speed open/obscured scenes is 80.54%/65.65% and 81.09%/61.79%, respectively.

Key words: integrity monitoring, carrier phase, protection level, extended Kalman filtering, dynamic road test

CLC Number:

P228

BAO Yeqing, LIU Hui, WANG Yixin, QIAN Chuang, TANG Jian. Experimental analysis of traffic-oriented GNSS high-precision positioning integrity[J]. Bulletin of Surveying and Mapping, 2023, 0(6): 98-103.

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