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Aeromagnetic vector data processing method

A technology of vector data and processing method, which is applied in the field of aeromagnetic vector data processing, and can solve problems such as inability to apply to aeronautical magnetic field data processing and ineffective correction of measurement errors.

Inactive Publication Date: 2012-08-01
JILIN UNIV
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Problems solved by technology

Its shortcoming is that only theoretical analysis and simulation have been carried out without field tests, and the measurement errors caused by the non-orthogonality between the three axes and the inconsistent sensitivity of the aeromagnetic three-component magnetic sensor cannot be effectively corrected, and this method is used for marine Environmental geomagnetic field data processing is not yet applicable to aeronautical magnetic field data processing

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  • Aeromagnetic vector data processing method
  • Aeromagnetic vector data processing method
  • Aeromagnetic vector data processing method

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Embodiment Construction

[0054] Below in conjunction with accompanying drawing and embodiment for further detailed description:

[0055] The magnetic vector data processing method, the magnetic vector data processing flow is: first connect the inertial navigation sensor with the magnetometer device, secondly, the three-channel sensitivity calibration of the magnetometer probe, the zero drift correction of the magnetometer probe, and then the data acquisition of the magnetometer device, the upper computer Receive the data collected by the magnetometer and inertial navigation at the same time → process and save the magnetometer data and inertial navigation data synchronously → correct the non-orthogonality of the magnetometer data → correct the steering difference of the magnetometer data → transform the magnetic vector attitude → draw a graph.

[0056] Magnetometer data and inertial navigation data are processed and saved synchronously, including the following sequence and steps:

[0057] Step 1. The m...

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Abstract

The invention relates to an aeromagnetic vector data processing method. The aeromagnetic vector data processing procedures include: connecting an inertial navigation sensor with a magnetometer device, using an upper computer to receive data synchronously acquired by a magnetometer and an inertial navigator, synchronously processing the magnetometer data and the inertial navigator data and storing, correcting nonorthogonal degree of magnetometer data, correcting turning difference of the magnetometer data, transforming magnetic vector postures, and drawing a magnetic vector curve graph. Influences on data acquisition precision are specifically eliminated by singly correcting factors affecting acquisition precision of a magnetometer probe, precision of the magnetometer after secondary correction is greatly improved, matching of information acquired by the magnetometer and the inertial navigator is guaranteed by synchronously processing data of a magnetometer data packet and an inertial navigator data packet, and magnetic vectors are subjected to posture transform according to inertial navigator posture information, so that magnetic field data can be converted into magnetic vectors based on a fixed geographic coordinate system, and reliable vector data are provided for aeromagnetic measurement.

Description

technical field [0001] The invention relates to a processing method for geophysical magnetic exploration data, in particular to a processing method for airborne magnetic vector data by a three-component fluxgate magnetometer coupled with an inertial navigation system and a GPS global positioning system. Background technique [0002] In the airborne magnetic vector data measurement system, the magnetometer sensor fixed on the aircraft measures the three-component value of the space vector magnetic field in real time, and the magnetometer sensor is based on the carrier coordinate system; at the same time, the inertial navigation system records the attitude information of the aircraft in real time (roll angle, pitch angle, Azimuth angle), the system is based on the geographic coordinate system, and the inertial navigation system and the magnetometer sensor are rigidly fixed, and the magnetometer data and inertial navigation data are synchronized by the GPS second pulse. Through...

Claims

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Application Information

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IPC IPC(8): G01V3/38
Inventor 王一赵瑜高游宗发保秦佩赵静王君
Owner JILIN UNIV
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