A real-time gravity gradient demodulation method for airborne gravity gradiometers

QIAN Xue-Wu; ZHAO Li-Ye; YIN Hang

doi:10.11720/wtyht.2022.0002

2022 Vol. 46, No. 6

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QIAN Xue-Wu, ZHAO Li-Ye, YIN Hang. 2022. A real-time gravity gradient demodulation method for airborne gravity gradiometers. Geophysical and Geochemical Exploration, 46(6): 1507-1511. doi: 10.11720/wtyht.2022.0002

Citation:

QIAN Xue-Wu, ZHAO Li-Ye, YIN Hang. 2022. A real-time gravity gradient demodulation method for airborne gravity gradiometers. Geophysical and Geochemical Exploration, 46(6): 1507-1511. doi: 10.11720/wtyht.2022.0002

A real-time gravity gradient demodulation method for airborne gravity gradiometers

1. School of Instrument Science and Engineering, Southeast University, Nanjing 210096, China；
2. School of Electronic Engineering,Jinan Vocational College,Jinan 250103,China；
3. China Aero Geophysical Survey and Remote Sensing Center for Natural Resources, Beijing 100083, China

Received Date: 05 January 2022

Revised Date: 20 December 2022

Publish Date: 03 January 2023

Abstract

Abstract

To further improve the precision of gravity gradient measurement, this study proposed a method for real-time phase angle compensation of gravity gradient demodulation and real-time processing of gravity gradients. Firstly, this study determined the process and formula used to determine the phase angles for gravity gradient demodulation based on the structural features of the gravity gradiometer prototype. Then, it investigated the method for real-time gravity gradient demodulation and determined the formula. Finally, this study carried out simulation experiments using the hardware-in-the-loop simulation platform of gravity gradient signals. The simulation results show that the method proposed in this study can significantly improve the precision of gravity gradient measurement and can be applied to engineering. Therefore, this study can provide technical references for the development of airborne gravity gradiometers.
- gravity gradiometer /
- demodulation phase angle /
- gradient demodulation /
- hardware-in-the-loop simulation

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References

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