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Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object

A self-adaptive compensation and magnetic fuze technology, which can be used in electric/magnetic exploration, measurement devices, and re-radiation, etc. It can solve the problems of feature failure, high cost, and large workload of modification and verification.

Inactive Publication Date: 2016-08-17
710TH RES INST OF CHINA SHIPBUILDING IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Improving hardware and increasing the sensitivity of magnetic probes are the fundamental means to improve the ability of magnetic fuzes to detect internal degaussing ship targets. However, the cost of hardware improvement is high and the cycle is long. realized
Modifying parameters and changing the algorithm is also a solution, but it will bring additional problems such as increased false alarm rate and invalid feature value, and cannot well inherit the existing magnetic fuze algorithm for traditional ship targets that are not equipped with internal degaussing systems. Mature technological result of reliable processing, the involved change verification effort is significant

Method used

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  • Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object
  • Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object
  • Self-adaptive compensation method for using magnetic fuze to detect inner-demagnetized vessel object

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Embodiment Construction

[0023] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0024] like figure 1 Shown: figure 1 The medium magnetic fuze is mounted on the bottom sinking mine platform, and the internal degaussing system is installed on the ship. The induced magnetic field of the ship target is degaussed by the internal degaussing system and then received by the magnetic fuze. according to figure 2 Using the measured ship magnetic field and the earth's magnetic field, the following steps are used to realize the self-adaptive compensation of the internal degaussing ship magnetic field, and restore the main characteristics of the ship's target induction magnetic field covered by the internal degaussing system.

[0025] Step 1: The magnetic fuze probe measures the three-component magnetic field signal. Since the earth's magnetic field is relatively stable and generally changes only with changes in latitude and longitude, the back...

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Abstract

The invention discloses a self-adaptive compensation method for using a magnetic fuze to detect an inner-demagnetized vessel object. The method includes the following steps: using a magnetic fuze probe to measure three component signal Ix, Iy, and Iz which have obtained the earth magnetic field intensity; adopting the magnetic fuze probe to measure three component signals of total magnetic field intensity when a vessel object passes, and subjecting the three component signals of the total magnetic field intensity by the three component signals of the earth magnetic field intensity to obtain three component signals Gx, Gy, and Gz of the vessel magnetic field intensity; adopting a model-based self-adaptive compensation method to conduct real-time compensation on the magnetic field which undergoes demagnetization by an inner-demagnetized system to obtain three component signal Mx, My, and Mz of a compensated vessel induced magnetic field; Mx=[xi]xGxIx, My=[xi]yGyIy, Mz=[xi]zGzIz; wherein [xi]x, [xi]y, [xi]z are compensated proportion coefficients which are selected based on experience of historic data.

Description

technical field [0001] The invention relates to the technical field of underwater target detection, in particular to an adaptive compensation method for magnetic fuze detection of internally degaussed ship targets. Background technique [0002] The internal degaussing system can effectively eliminate the induced magnetic field generated during the ship's navigation, which greatly reduces the target detection efficiency of the magnetic fuze. Improving hardware and increasing the sensitivity of magnetic probes are the fundamental means to improve the ability of magnetic fuzes to detect internal degaussing ship targets. However, the cost of hardware improvement is high and the cycle is long. Achieved. Modifying parameters and changing the algorithm is also a solution, but it will bring additional problems such as increased false alarm rate and invalid feature value, and cannot well inherit the existing magnetic fuze algorithm for traditional ship targets that are not equipped ...

Claims

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Application Information

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IPC IPC(8): G01V13/00G01V3/08G01V3/40
CPCG01V3/081G01V3/40G01V13/00
Inventor 高伟张恒李锋曹振宇汪小亚
Owner 710TH RES INST OF CHINA SHIPBUILDING IND CORP
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