The Carrier Phase Time Transfer with Broadcast Ephemeris

Abstract

Time transfer method PPP is restricted by the real-time and precision of IGS production, and the real-time application have not been widely implemented. Standard Point Positioning(SPP) can satisfy the application for the real-time customer, but the precision is low and is not satisfy the high precision customer. So a new algorithm which have real-time and high precision performance is given. The algorithm dose not need the external orbit and clock error, and can be used for the real-time time transfer because of getting rid of the reliance on IGS production. In this paper, the analysis for the new algorithm is given by using the real measurement data. The results show that the algorithm could improve the time transfer results and frequency stability significantly; the time transfer precision of the new algorithm relative to SPP is improved from 10 ns to 1-2 ns, and dose not need the external precise ephemeris production; the new algorithm can be realized in the receiver conveniently.