Simulation Method of Gravity Gradient Signal of Rotational Accelerometer Gravity Gradient

A technology of gravity gradiometer and rotational acceleration, which is applied in the field of gravity gradient signal simulation based on precision instruments to simulate real system environment, can solve problems such as weak gradient signal, and achieve the effect of convenient verification and verification of correctness.
CN104459826BActive Publication Date: 2017-09-26SOUTHEAST UNIV
7 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
SOUTHEAST UNIV
Publication Date
2017-09-26

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a gravity gradient signal simulation method of a rotating accelerometer gravity gradiometer. The gravitational accelerometer signals sensed by four accelerometers on a disc are calculated according to the universal gravitational formula, and the four groups of acceleration signals are respectively added to various error data. , the computer sends the calculated acceleration data containing errors to the analog-to-digital converter, and then undergoes current-to-voltage signal conversion, voltage amplification, and addition and subtraction operations to perform 1-fold frequency demodulation and fixed-frequency signal on the addition signal and subtraction signal respectively. For demodulation, judge whether to adjust the accelerometer scale factor according to the demodulation result. If the demodulation result meets the requirements, perform 2 times frequency gradient demodulation on the total output signal of the simulation system to obtain the gravity gradient value. Through the invention, the signal characteristics, parameter adjustment, error compensation and signal processing method of the rotary accelerometer gravity gradiometer can be studied in detail.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a gravity gradient signal simulation method of a rotational accelerometer gravity gradiometer, in particular to a gravity gradient signal simulation method for simulating a real system environment based on precision instruments. Background technique

[0002] The earth's gravitational field reflects the distribution and composition information of the earth's interior materials, and the material distribution can be inverted by accurately measuring the earth's gravitational field. High-precision gravity gradient measurement is of great significance to the development of space science, earth science, geological science, and inertial navigation. At the same time, gravity gradient measurement is considered to be one of the most effective means of resource exploration. Basic geological research, geodesy, exploration of oil and gas mineral resources and other fields have important application prospects. Airborne gravity gradient measur...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More