﻿ 高精度重力测量的潮汐改正软件及其评估分析
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 大地测量与地球动力学  2023, Vol. 43 Issue (1): 106-110  DOI: 10.14075/j.jgg.2023.01.019

### 引用本文

ZHU Chuandong, CHEN Ming, MING Xiaoran, et al. Tide Correction Software for High Precision Gravimetric Measurements and Its Evaluation Analysis[J]. Journal of Geodesy and Geodynamics, 2023, 43(1): 106-110.

### Foundation support

Science and Technology Innovation Fund of the First Monitoring and Application Center, CEA, No. FMC2022001; The Spark Program of Earthquake Technology of CEA, No. XH22017YA, XH22016YA; National Key Research and Development Program of China, No. 2018YFC1503606.

### 第一作者简介

ZHU Chuandong, PhD, assistant researcher, majors in gravity data processing and its application, E-mail: zhuchuandong2006@sina.com.

### 文章历史

1. 中国地震局第一监测中心，天津市耐火路7号，300180

1 数据处理方法 1.1 重力固体潮理论值

1.2 海洋潮汐负荷

 $\begin{gathered} L(\varphi, \lambda, t)= \\ \rho_{\mathrm{w}} r^2 \iint_S H\left(\varphi^{\prime}, \lambda^{\prime}\right) G(\psi) \sin \varphi^{\prime} \mathrm{d} \varphi^{\prime} \mathrm{d} \lambda^{\prime} \end{gathered}$ (1)

 $\begin{array}{c} {G_p}(\varphi , \lambda , t) = \\ \sum\limits_{p = 1}^8 {{f_p}} {L_p}\cos \left[ {{\omega _p}t + {\chi _p} + {u_p} - {\alpha _p}(\varphi , \lambda )} \right] \end{array}$ (2)

2 结果与分析 2.1 重力固体潮理论值

 图 1 GTIDE与PREDICT的理论重力固体潮及其差值 Fig. 1 The theoretical gravity solid tide and its difference between GTIDE and PREDICT
2.2 海洋潮汐负荷

 图 2 GTIDE与Bos-Scherneck的海洋潮汐重力负荷时间序列 Fig. 2 The time series of ocean tide loading of GTIDE and Bos-Scherneck

3 结语

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Tide Correction Software for High Precision Gravimetric Measurements and Its Evaluation Analysis
ZHU Chuandong1     CHEN Ming1     MING Xiaoran1     PANG Liuqing1     TIAN Xingyu1     SU Jianwen1
1. The First Monitoring and Application Center, CEA, 7 Naihuo Road, Tianjin 300180, China
Abstract: Based on MATLAB GUI interface, we compile a set of tide correction software GTIDE for gravity solid tide and ocean tide loading using zenith distance and Green's function method. We analyze the reliability and applicability of GTIDE through comparison with existing international software. The results show that software is easy to operate and maintain, and its results can effectively reveal the variation characteristics of gravity solid tide and ocean tide loading. The GTIDE can be using for tide corrections of high-precision absolute gravity and relative gravity measurements.