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- Title
Performance Improvement of Time-Differenced Carrier Phase Measurement-Based Integrated GPS/INS Considering Noise Correlation.
- Authors
Kim, Jungbeom; Kim, Younsil; Song, Junesol; Kim, Donguk; Park, Minhuck; Kee, Changdon
- Abstract
In this study, we combined a time-differenced carrier phase (TDCP)-based global positioning system (GPS) with an inertial navigation system (INS) to form an integrated system that appropriately considers noise correlation. The TDCP-based navigation system can determine positions precisely based on high-quality carrier phase measurements without difficulty resolving integer ambiguity. Because the TDCP system contains current and previous information that violate the format of the conventional Kalman filter, a delayed state filter that considers the correlation between process and measurement noise is utilized to improve the accuracy and reliability of the TDCP-based GPS/INS. The results of a dynamic simulation and an experiment conducted to verify the efficacy of the proposed system indicate that it can achieve performance improvements of up to 70% and 60%, respectively, compared to the conventional algorithm.
- Subjects
INERTIAL navigation systems; GLOBAL Positioning System; NOISE measurement; NOISE; KALMAN filtering
- Publication
Sensors (14248220), 2019, Vol 19, Issue 14, p3084
- ISSN
1424-8220
- Publication type
Article
- DOI
10.3390/s19143084