Assessment of precipitable water vapor retrieved from precise point positioning with PPP-B2b service

Yang, Hao; He, Xiufeng; Ferreira, Vagner G.; Ji, Shengyue; Xu, Ying; Song, Susu

doi:10.1007/s12145-023-00939-3

Cited by 6 publications

(1 citation statement)

References 35 publications

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“…Finally, the broadcast time of the broadcast ephemeris must match the broadcast time of its corresponding correction message and must not exceed the validity period of the correction. Thus, the correction message can be used [19]. The validity periods of various message types of PPP-B2b are given in Table 1.…”

Section: Matching Algorithms Of Ppp-b2b Messagesmentioning

confidence: 99%

Real-Time Precise Orbit Determination of Low Earth Orbit Satellites Based on GPS and BDS-3 PPP B2b Service

Shi,

Xu,

et al. 2024

Remote Sensing

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This study investigates and verifies the feasibility of the precise point positioning (PPP)-B2b enhanced real-time (RT) precise orbit determination (POD) of low Earth orbit (LEO) satellites. The principles and characteristics of matching various PPP-B2b corrections are introduced and analyzed. The performance and accuracy of broadcast ephemeris and PPP-B2b signals are compared and evaluated by referring to the precise ephemeris. The root mean square (RMS) errors in the Global Positioning System (GPS) and BeiDou Navigation Satellite System (BDS)-3 broadcast ephemeris orbits in the along direction are larger than those in the other two (radial and cross) directions, and correspondingly, the along component PPP-B2b corrections are greatest. The continuity and smoothness of the GPS and BDS-3 broadcast ephemeris orbits and clock offsets are improved with the PPP-B2b corrections. The availability of PPP-B2b corrections is comprehensively analyzed for the TJU-01 satellite. Several comparative schemes are adopted for the RT POD of the TJU-01 satellite using the broadcast ephemeris and PPP-B2b corrections. The RT POD performance is improved considerably with the broadcast ephemeris corrected by the PPP-B2b signals. The RMS of the RT orbital errors in the radial, along, and cross directions is 0.10, 0.13, and 0.09 m, respectively, using BDS-3 and GPS PPP-B2b corrections, with reference to the solutions calculated with the precise ephemeris. The accuracy is improved by 5.1%, 43.9%, and 28.7% in the three directions, respectively, relative to that achieved with the broadcast ephemeris. It is concluded that a greater proportion of received PPP-B2b satellite signals corresponds to a greater improvement in the accuracy of the RT POD of the LEO satellite.

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Section: Matching Algorithms Of Ppp-b2b Messagesmentioning

confidence: 99%