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A Study on the Location Error Measurement to Resolve the Problem of Weak Signal Areas for Satellite Navigation System  

Park, Chi-Ho (Daegu Gyeongbuk Institute of Science & Technology)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.48, no.10, 2011 , pp. 13-19 More about this Journal
Abstract
This study is to explore the causes for weak signal areas and suggest solutions for the problem of weak signal areas through the experiments for location error of satellite navigation system depending on the characteristics of locations. For kinematic point positioning, a moving object can have different number of satellite navigation systems available depending on its location. It has to receive location data from at least four satellite navigation systems for precise point positioning. However, drastic urbanization and poor surroundings have caused greater location error and weak signal areas. To reduce location error and remove the occurrence of weak signal areas, it is necessary to verify the characteristics of metropolitan surroundings. Therefore, experiments were conducted to measure location error and discover the causes for the occurrence of weak signal areas in metropolitan area, residential area, woods, ocean area, and open ground. In addition, this study suggests a point positioning algorithm with high precision suitable for local surroundings and an algorithm to remove weak signal areas.
Keywords
Satellite Navigation System; HDOP;
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