Precise Point Positioning for TAI Computation | Zendy

Gérard Petit | Zendy; Zhiheng Jiang | Zendy

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Precise Point Positioning for TAI Computation

Author(s) -

Gérard Petit,

Zhiheng Jiang

Publication year - 2008

Publication title -

international journal of navigation and observation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.176

H-Index - 18

eISSN - 1687-6008

pISSN - 1687-5990

DOI - 10.1155/2008/562878

Subject(s) - precise point positioning , global positioning system , computer science , code (set theory) , time transfer , computation , point (geometry) , transfer (computing) , phase (matter) , simple (philosophy) , dual (grammatical number) , link (geometry) , real time computing , algorithm , telecommunications , mathematics , set (abstract data type) , parallel computing , physics , art , philosophy , geometry , literature , gnss applications , quantum mechanics , epistemology , programming language , computer network

We discuss the use of some new time transfer techniques for computing TAI time links. Precise point positioning (PPP) uses GPS dual frequency carrier phase and code measurements to compute the link between a local clock and a reference time scale with the precision of the carrier phase and the accuracy of the code. The time link between any two stations can then be computed by a simple difference. We show that this technique is well adapted and has better short-term stability than other techniques used in TAI. We present a method of combining PPP and two-way time transfer that takes advantage of the qualities of each technique, and shows that it would bring significant improvement to TAI links

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