Assessment of precise GPS ephemeris and clock in the International GNSS service

Cho, Deuk Jae; Jeong, Ho Cheol; Park, Sang Hyun

doi:10.1109/plans.2010.5507292

Cited by 2 publications

(2 citation statements)

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“…The IGS gathers, records, and distributes GPS observation data sets of that are of sufficient exactness to fulfil the objectives of a broad span of applications and experiments. These data sets are evaluated and integrated to create the IGS products shown in the table below (Cho, et al, 2010).…”

Section: Observation Model Of Precise Point Positioningmentioning

confidence: 99%

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Performance Comparison among Different Precise Satellite Ephemeris and Clock Products for PPP/INS/UWB Tightly Coupled Positioning

Zheng

Jian

et al. 2017

J. Navigation

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To meet the requirements of different applications, the International Global Navigation Satellite System (GNSS) Service (IGS) has provided Global Positioning System (GPS) satellite ephemerides and clock products with different accuracy levels (final, rapid and ultra-rapid products). Comparison of Precise Point Positioning/Inertial Navigation System/Ultra Wideband (PPP/INS/UWB) tightly coupled positioning with different precise satellite ephemeris and clock products is made and corresponding data analysis is provided. Final, rapid and ultra-rapid products are applied in a PPP/INS/UWB integrated system. The field trajectories, position and velocity errors of the integrated system with different products are compared. The results indicate that PPP/INS/UWB tightly coupled positioning with final and rapid products achieves an accurate performance. Compared with the position resolution using final products, the position accuracy with the ultra-rapid products (observed half) is slightly reduced and the position accuracy with the ultra-rapid products (predicted half) has a 0·1–0·2 m reduction. The influence of precise satellite ephemeris and clock products is very minor for non-real-time positioning, relative to the accuracy of PPP/INS/UWB tightly coupled positioning.

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Section: Observation Model Of Precise Point Positioningmentioning

confidence: 99%

“…The precise GPS satellite orbit and clock offered by IGS were examined for applications in maritime precise positioning. The outcomes reveal that it was necessary to abbreviate real-time IGS interval products for more precise positioning solutions (Cho et al, 2010).…”

Section: Introductionmentioning

confidence: 99%