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Patent Searching and Data


Title:
CALIBRATION METHOD FOR GRAVITY GRADIOMETER OF ROTATING ACCELEROMETER
Document Type and Number:
WIPO Patent Application WO/2020/164206
Kind Code:
A1
Abstract:
A calibration method for a gravity gradiometer of a rotating accelerometer. By changing linear motion excitation, angular motion excitation and self-gradient excitation of the gravity gradiometer of the rotating accelerometer, a linear motion error coefficient, an angular motion error coefficient, a self-gradient model parameter, and a scale factor of the gravity gradiometer of the rotating accelerometer are calibrated once. The calibrated line motion error coefficient and angular motion error coefficient are used for online motion error compensation of the gravity gradiometer, and the calibrated self-gradient model parameter is used for self-gradient compensation. The calibration method is operated simply without being limited by calibration occasions and is suitable for programmatic self-calibration, and thus has important engineering value.

Inventors:
CAI TIJING (CN)
YU MINGBIAO (CN)
Application Number:
PCT/CN2019/089236
Publication Date:
August 20, 2020
Filing Date:
May 30, 2019
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Assignee:
UNIV SOUTHEAST (CN)
International Classes:
G01V13/00
Foreign References:
CN109709628A2019-05-03
CN109212620A2019-01-15
CN108931824A2018-12-04
CN105717553A2016-06-29
US5339684A1994-08-23
Attorney, Agent or Firm:
NANJING JINGWEI PATENT & TRADEMARK AGENCY CO., LTD (CN)
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