NTT and Furuno Electric say they have developed a receiver for GPS and other global navigation satellite systems (GNSS) that dramatically improves time-synchronization accuracy in areas with severe reception conditions such as urban canyons and mountainous areas.
By integrating a new satellite signal selection algorithm developed by NTT into a time synchronization GNSS receiver from Furuno, as well as signals from satellites in line-of-sight locations, it is possible to use multi-path signals (reflected or diffracted from buildings and other structures) that previously inhibited the accuracy of time synchronization, NTT says.
In a real multi-path reception test environment, time error was reduced to approximately 1/5 of earlier values. This promises to enable time synchronization accuracy close to that obtained in open-sky reception environments with no obstructions, even in environments previously considered poor and unsuitable for accurate time synchronization.
Furuno plans to begin sales of their new GF-88 series time synchronization GNSS receivers incorporating this new technology in April of 2019, and to deploy it widely in fields such as 4G/5G mobile base stations, financial trading, power grids, and data centers.
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