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首页> 外文期刊>Surveys in Geophysics: An International Review Journal of Geophysics and Planetary Sciences >Determination of Gravitational Potential at Ground Using Optical-Atomic Clocks on Board Satellites and on Ground Stations and Relevant Simulation Experiments
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Determination of Gravitational Potential at Ground Using Optical-Atomic Clocks on Board Satellites and on Ground Stations and Relevant Simulation Experiments

机译：使用船卫星和地站的光学原子时钟确定地面的重力电位及相关仿真实验

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摘要

The general relativity 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. Recently we proposed an approach referred to as satellite frequency signal transmission based on the Doppler canceling technique or tri-frequency combination technique to determine the GP difference between a satellite and a ground site via exchanging microwave signals. 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 0.383 and 0.454 m(2)/s(2), assuming the clocks with inaccuracy of about 1 x 10(-18) (s/s) level are available. If more satellites equipped with ultra-high-precise clocks are available, the precision of the determined GP (difference) at ground stations can be further improved.
机译：一般相对论理论提供了通过比较位于两个站点的两个光学原子钟的运行速率或振动频率来直接确定重力电位（GP）差异的潜在方法。最近，我们提出了一种基于多普勒消除技术或三频组合技术称为卫星频率信号传输的方法，以通过交换微波信号来确定卫星和接地站点之间的GP差异。在这里，作为我们之前的研究的延伸，我们的目标是在地面站标配GP的测定，并在不同情况下建立模拟实验，包括通过一个或多个卫星确定地面站的GP并确定两个地面站之间的GP差异通过一个或多个卫星。关于我们制作模拟实验的每种情况，结果表明，通过一个卫星确定的两个站的GP在地面站和GP差异之间的精度分别为约0.383和0.454 m（2）/ s。 （2），假设具有约1×10（-18）（S / S）水平的不准确的时钟。如果有更多配备有超高精度时钟的卫星，则可以进一步提高所确定的GP（差异）的精度。

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