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A Study of GPS Carrier-Phase Time Transfer Noise Based on NIST GPS Receivers



Jian Yao, Judah Levine


To do a better time comparison between high-precision clocks (such as Cesium Fountain clock and Hydrogen-maser clock), we want to study and eventually lower the GPS carrier-phase time transfer noise. The GPS carrier-phase time transfer noise comes from four sources: GPS satellite, GPS signal path, ground receiving equipment (receiver and antenna), and data- processing algorithm. This paper focuses on the noise introduced by the ground receiving equipment. At NIST, we have installed 7 GPS receivers. All receivers have the same reference time, i.e., UTC(NIST). Three of them are connected to the same antenna. The other four are connected to four different antennas. This architecture enables us to study the time-transfer noise from the ground receiving equipment. We study both long-term (> 100 days) noise and short-term (
Journal of Research (NIST JRES) -


GPS, carrier phase time transfer, long-term noise, short-term noise, transient response, precise point positioning (PPP), revised RINEX-shift, boundary discontinuity.


Yao, J. and Levine, J. (2016), A Study of GPS Carrier-Phase Time Transfer Noise Based on NIST GPS Receivers, Journal of Research (NIST JRES), National Institute of Standards and Technology, Gaithersburg, MD, [online], (Accessed July 19, 2024)


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Created August 8, 2016, Updated November 14, 2018