Abstract
Application of Shadow Matching Technique to Improve Smartphone-based Global Navigation Satellite System Positioning Accuracy
Highlights
Network technology is rapidly developing, and smartphones provide comprehensive cultural services beyond basic communication, such as information retrieval, transportation, and finance.[1]
The reliability of the location information decreases in areas where global navigation satellite system (GNSS) satellite signals are blocked by high-rise buildings, trees, and other structures, and/or in the case of multipath propagation where satellite signals are received through multiple paths.[7]. The problem caused by the insufficient number of visible satellites in environments surrounded by high buildings is solved by integrating other satellite navigation systems with GNSS
To analyze the visibility between a smartphone and a satellite, the geographic information system (GIS) analysis and skyline and barrier analysis methods were used to calculate the visible range, the analyzed visible range and altitude of the satellite were calculated, and visible satellites were selected on the basis of the sky mask method
Summary
Network technology is rapidly developing, and smartphones provide comprehensive cultural services beyond basic communication, such as information retrieval, transportation, and finance.[1] Smartphones transcend the limitations of time and space in terms of network connectivity, allowing users to freely use the information or services they need anytime and anywhere without restrictions. As the number of smartphone users increases, location-based. The satellite navigation chipset in a smartphone allows users to check their location and provides real-time geographic information about the individual via the mobile environment. The reliability of the location information decreases in areas where GNSS satellite signals are blocked by high-rise buildings, trees, and other structures, and/or in the case of multipath propagation where satellite signals are received through multiple paths.[7] The problem caused by the insufficient number of visible satellites in environments surrounded by high buildings is solved by integrating other satellite navigation systems with GNSS
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