Determination of gravitational potential difference between a groundstation and a satellite using precise optical atomic clocks

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Important Dates

Conference:

Apr. 22-24, 2019

Full Paper Due: Mar. 18, 2019

Abstract Due: Mar. 18, 2019

Audience Registration Due:
Apr. 22, 2019

Presentations of The Spring World Congress on Engineering and Technology (SCET 2017)

● Determination of gravitational potential difference between a groundstation and a satellite using precise optical atomic clocks
Author(s)
Ziyu Shen
Affiliation(s)
Wuhan University
KEYWORDS
gravitational potential difference, groundstation, satellite, precise optical atomic clocks
ABSTRACT
The General Relativity (GR) theory provides a potential way to directly determine the gravitational potential (GP) difference by comparing the running rate or vibration frequencies of two optical-atomic clocks located at two stations. Here, as an extension of our previous study, we aim to formulate determination of GP at ground stations and establish simulation experiments in different cases, including determining the GP at a ground station via one or more satellites, and determining the GP difference between two ground stations via one or more satellites. Concerning each case we made simulating experiments, and results show that the precision of the GP at a ground station and that of the GP difference between two stations, determined via one satellite, are respectively about 0.383m2 s-2and 0.454 m2 s-2, assuming the clocks with inaccuracy of about 1×10-18 level are available. This study is supported by National 973 Project China (grant No. 2013CB733301 and 2013CB733305) and NSFCs (grant Nos. 41174011, 41429401,41210006,41128003,41021061).