Determination of the orthometric height difference based on optical fiber frequency transfer technique  

作　　者：Anh The Hoang Ziyu Shen Wen Bin Shen Chenghui Cai Wei Xu An Ning Yifan Wu 

机构地区：[1]School of Geodesy and Geomatics,Wuhan University,Wuhan 430079,China [2]School of Resource,Environmental Science and Engineering,Hubei University of Science and Technology,Xianning,Hubei,China [3]School of Agriculture and Natural Resource,Vinh University,Vinh City 460000,Viet Nam [4]State Key Laboratory of Information Engineering in Surveying,Mapping and Remote Sensing,Wuhan University,Wuhan 430079,China [5]Guangxi Key Laboratory of Spatial Information and Geomatics,Guilin 541006,China

出　　处：《Geodesy and Geodynamics》2021年第6期405-412,共8页大地测量与地球动力学（英文版）

基　　金：supported by the National Natural Science Foundations of China(Grant Nos.42030105,41721003,41804012,41631072,41874023);the Space Station Project(Grant No.2020-228);the Natural Science Foundation of Hubei Province of China(Grant No.2019CFB611)。

摘　　要：The development of remote frequency transfer techniques,especially the appearance of optical clocks with unprecedented stability,has prompted geoscientists to study their applications in geodesy.Using remote frequency transfer technique,by frequency comparison of two optical clocks at two points P and Q connected by optical fibers,one can measure the signal’s frequency shift between them,and the geopotential difference between them can be determined based on the gravity frequency shift equation.Given the orthometric height of P,the orthometric height of Q can be determined.Since the present stability of the optical clock has achieved 1×10^(-18) or better and comparing the frequency transfer via optical fiber provides stability at 10^(-19) level,the optical clock network enables determining the orthometric height at centimeter-level.This study provides a formulation to determine the height diffe rence at one-centimeter level between two points on the ground based on the optical fiber frequency transfer technique.

关 键 词：Optical fiber frequency transfer(OFFT) Optical fiber Frequency transfer GEOPOTENTIAL 

分 类 号：P228.4[天文地球—大地测量学与测量工程]