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- W4284974927 abstract "Integer ambiguity resolution is the key to GNSS precision positioning technology, in which the geometric distribution of satellites, the number of available frequencies, and the quality of observations are one of the main factors that affect the success rate of integer ambiguity resolution. As China's Beidou constellation has opened global services, in order to meet the high-precision positioning needs of users around the world, it is necessary to study the performance analysis of Beidou ambiguity resolution on a global scale, taking the Beidou constellation configuration and the influence of the multi-frequency signal system into account. In this contribute, aiming at the global implementation of gridded points, the Beidou satellite orbit set is generated through ephemeris simulation, and the Beidou integer ambiguity resolution model is constructed with variable dimensions such as different time, different location points, different frequency points, and different observation quality. The impact of each variable dimension on the performance of the integer ambiguity solution is quantitatively analyzed. This paper uses the ephemeris files of Beidou 2 and Beidou 3 in October 2021 to construct a 24-hour ephemeris orbit set, and implements a latitude and longitude grid to take points around the world at 5°×5° intervals to carry out comprehensive experimental tests. The test results show that the simulation of the geometric distribution represented by different locations and different times shows that the performance of the eastern hemisphere is better than that of the western hemisphere; the simulation of different frequency points shows that the more frequency points are used, the better the performance of the integer ambiguity solution is improved. Observation quality simulation shows that the higher the quality of the pseudo-range and carrier phase observations, the greater the success rate of integer ambiguity." @default.
- W4284974927 created "2022-07-10" @default.
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- W4284974927 date "2022-05-30" @default.
- W4284974927 modified "2023-10-16" @default.
- W4284974927 title "Performance Analysis of Ambiguity Resolution for Beidou Satellite Navigation System" @default.
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- W4284974927 doi "https://doi.org/10.23919/icins51784.2022.9815339" @default.
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