Assessment of IGS ultra-rapid products for near real-time steering of UTC time scale in Singapore

Global Positioning System (GPS)-based frequency and time transfer has been studied for a long period of time and it has been proved to achieve precise results by successfully implementing Precise Point Positioning (PPP) algorithm. Accurate satellite clock and orbit information play critical role in achieving sub-nanosecond (ns) accuracy level when implementing PPP for time and frequency transfer. Different satellite orbit and clock products are made available by International GNSS System (IGS). One of the important characteristics of these products is their latency. Choice of a product with lower latency can help to realize a near-real time system, which is in demand especially in financial sectors which require fast and accurate time synchronization. This paper compares different IGS products and proposes the suitability of Ultra-Rapid products to locally steer the UTC time scale in near real-time fashion.

Abstract licence: CC BY-NC

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.