| Citation: |
GAO Weiguang, SUI Yeye, LI Min, HU Zhigang, SU Chengeng, SU Mudan. Application Mode and Usage Suggestion of BDS Downlink Navigation Signals for RNSS Service[J]. Geomatics and Information Science of Wuhan University, 2023, 48(9): 1444-1454. DOI: 10.13203/j.whugis20220691
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BeiDou navigation satellite system (BDS) has provided navigation, positioning and time service of five signals (B1I, B1C, B2a, B2b, B3I) in three frequency bands to users all over the world. In combination with the characteristics of BDS signals and BDS construction and development planning, BDS downlink navigation signals have been tested and evaluated using long-term accumulated measured data and dynamic on-board experimental data.
The optimal multi-path combination method of dual frequency and triple frequency first order and triple frequency second order ionosphere free in multi frequency selection mode is proposed.
The user single frequency, dual frequency and triple frequency positioning modes and their use suggestions are discussed and given: Single frequency users give priority to use B1C and B2a, dual frequency users give priority to use B1C/B2a combination, and triple frequency users give priority to use B1C/B2a/B3I, providing support for users to correctly use BeiDou downlink navigation signals.
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