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Sensors 2018, 18(11), 3836; https://doi.org/10.3390/s18113836

An Enhanced Map-Matching Algorithm for Real-Time Position Accuracy Improvement with a Low-Cost GPS Receiver

1
Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, Korea
2
Department of Electronic Engineering, Kyonggi University, Suwon 16227, Kyonggi-Do, Korea
*
Author to whom correspondence should be addressed.
Received: 13 September 2018 / Revised: 3 November 2018 / Accepted: 5 November 2018 / Published: 8 November 2018
(This article belongs to the Collection Positioning and Navigation)
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Abstract

This paper proposes a real-time position accuracy improvement method for a low-cost global positioning system (GPS), which uses geographic data for forming a digital road database in the digital map information. We link the vehicle’s location to the position on the digital map using the map-matching algorithm to improve the position accuracy. In the proposed method, we can distinguish the vehicle direction on the road and enhance the horizontal accuracy using the geographic data composed of the vector point set of the digital map. We use the iterative closest point (ICP) algorithm that calculates the rotation matrix and the translation vector to compensate for the disparity between the GPS and the digital map information. We also use the least squares method to correct the error caused by the rotation of the ICP algorithm and link on the digital map to eliminate the residual disparity. Finally, we implement the proposed method in real time with a low-cost embedded system and demonstrate the effectiveness of the proposed method through various experiments. View Full-Text
Keywords: low-cost GPS receiver; position estimation; ICP algorithm; map-matching; embedded system low-cost GPS receiver; position estimation; ICP algorithm; map-matching; embedded system
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Kang, J.M.; Kim, H.S.; Park, J.B.; Choi, Y.H. An Enhanced Map-Matching Algorithm for Real-Time Position Accuracy Improvement with a Low-Cost GPS Receiver. Sensors 2018, 18, 3836.

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