Robust real-time kinematic positioning method based on NLOS detection and multipath elimination in GNSS challenged environments

Xiaozhou Ye; Chunjiang Ma; Wenxiang Liu; Feixue Wang

Robust real-time kinematic positioning method based on NLOS detection and multipath elimination in GNSS challenged environments

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Author(s): Xiaozhou Ye¹ ; Chunjiang Ma¹ ; Wenxiang Liu¹ ; Feixue Wang¹
- Affiliations: 1: College of Electronic Science and Technology, National University of Defense Technology , Changsha 410073 , People's Republic of China
Source: Volume 56, Issue 24, 26 November 2020, p. 1332 – 1335
DOI: 10.1049/el.2020.2210 , Print ISSN 0013-5194, Online ISSN 1350-911X

Received 30/07/2020, Published 29/10/2020

Owing to the existence of non-line-of-sight (NLOS) signals in global navigation satellite system (GNSS) challenged environment, the real-time kinematic (RTK) position precision is seriously damaged. In order to improve the position accuracy, the authors propose a robust positioning method which tackles this problem by detecting the NLOS through a decision tree and estimating the double-differenced multipath errors in real time. The NLOS detection performance of the proposed method is 95.64%. The field experiment shows that the ambiguity fixing rate has improved by 43% in the instantaneous mode, and the 3D position accuracy is about 81.77% higher better than that of normal RTK method which is implemented by using RTKLIB software.

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Robust real-time kinematic positioning method based on NLOS detection and multipath elimination in GNSS challenged environments

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