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A vector magnetic target recognition method for magnetic anomaly detection

An identification method and magnetic anomaly technology, applied in the identification field, can solve problems such as limited application, low detection efficiency, and short detection distance, and achieve the effect of improving efficiency, positioning accuracy, and improving detection capabilities

Active Publication Date: 2020-07-21
BEIJING AUTOMATION CONTROL EQUIP INST
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Problems solved by technology

Therefore, the traditional vector gradient method for magnetic target recognition has defects such as low detection efficiency and short detection distance, which limits its application in the fields of national economic development and national defense construction.

Method used

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  • A vector magnetic target recognition method for magnetic anomaly detection
  • A vector magnetic target recognition method for magnetic anomaly detection
  • A vector magnetic target recognition method for magnetic anomaly detection

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Embodiment Construction

[0036] A magnetic anomaly detection vector magnetic target identification method, comprising the following steps:

[0037] Step 1: Drone Flight

[0038] Fly the drone over the area to be explored. The number of drones is four or more. The greater the number of drones, the greater the amount of data obtained from detection, and the more accurate the results of subsequent calculations, but the cost is also higher. Considering cost and efficiency, the number of UAVs is usually 4 to 6. Each drone carries a highly sensitive vector magnetometer.

[0039] Step 2: Get the detection result

[0040] Collect the detection results of the highly sensitive vector magnetometer on the drone.

[0041] This step can also perform preliminary processing on the detection results. For example, when the magnetic field data of the drone's carrier is known in advance, it can be processed in this step to eliminate the influence of the carrier's magnetic field on the result.

[0042] This step obt...

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Abstract

The invention relates to a vector magnetic target identification method of magnetic abnormity detection. The method comprises the steps that 1) an unmanned aerial vehicle (UAV) flies in an area whichneeds detection, and carries a high-sensitivity vector magnetometer; 2) a detection result of the high-sensitivity vector magnetometer on the UAV is obtained; 3) the detection result of first flight is compared with a local magnetic field result, the detection result of latter flight is compared with that of a former flight, when the difference between the results is greater than 10pT, it is determined there is an abnormal magnetic field in the area and a step 4) is turned to, and when the difference between the results is lower than or equivalent to 10pT, it is determined that there is no abnormal magnetic field in the area, the flight for this time is ended, and the UAV flights in the next neighbor area till flight in all detection areas is completed; and 4) the position of the magneticmoment of the abnormal magnetic field are cacualted. The method of the invention has the advantages that the detection system has a higher detection capabilities for weak signals, and the magnetic abnormity detecting efficiency and positioning precision can be improved.

Description

technical field [0001] The invention belongs to a recognition method, in particular to a magnetic target recognition method for a magnetic anomaly detection vector. Background technique [0002] The geomagnetic field generally changes slowly and regularly with time and space. When there is a magnetic substance, the magnetic field of the substance itself and the magnetic field induced by the geomagnetic field will be superimposed on the geomagnetic field, so that the geomagnetic field in a certain area An exception occurred within. There are a large number of metal minerals in the land and ocean of the earth. Underwater military equipment such as submarines and mines are mainly composed of metal materials, and the magnetic materials in them will cause abnormalities in the surrounding geomagnetic field. Therefore, by detecting and identifying abnormal information of the geomagnetic field, the detection and identification of magnetic substances can be realized, which is widely...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V3/16G01V3/165
CPCG01V3/16G01V3/165
Inventor 秦杰王春娥王同雷韩文法
Owner BEIJING AUTOMATION CONTROL EQUIP INST
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