BDS/GPS Equal-weight Combined Carrier Phase Time Transfer Method in Occlusion Environment

doi:10.11947/j.AGCS.2018.20180291

Abstract

Abstract: The time transfer model is given using BDS/GPS observations, and the results of time and frequency transfer under different cut-off elevation angles are compared between BDS, GPS and BDS/GPS. Experimental results show that the performance of BDS/GPS time and frequency transfer result is not significantly improved compared to the single system when the number of available satellites is enough. However, when the cut-off elevation angle is larger than 30 degrees, the single system can't get continuous time and frequency transfer results, but the BDS/GPS combination can still obtain continuous results. Compared to single system method, both the stability and convergence time are improved. This has a very important application value in some special conditions, for instance, deep open pit mines and urban canyons when not all satellites are visible.

Key words: BDS/GPS, carrier phase, TDOP, time transfer, frequency transfer

CLC Number:

P228

YU Heli, HAO Jinming, GUO Fusheng, GUO Jiayu. BDS/GPS Equal-weight Combined Carrier Phase Time Transfer Method in Occlusion Environment[J]. Acta Geodaetica et Cartographica Sinica, 2018, 47(S0): 109-116.

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