Double-magnetic-parameter coordinate inversion positioning method and device

A positioning method and target position technology, applied in the field of positioning and navigation, can solve the problems of poor real-time navigation, difficulty in simultaneous convergence, and navigation deviation, etc., and achieve the effect of good practicability and good product portability

Active Publication Date: 2021-06-29
NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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Problems solved by technology

[0003]However, based on the magnetic map matching algorithm, it is necessary to obtain the geomagnetic field map of the target area in advance, including 7 components of magnetic parameters, and the navigation accuracy is positively correlated with the magnetic map resolution , the calculation load will also increase rapidly with the increase of the resolution of the magnetic map
[0004]Altho

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  • Double-magnetic-parameter coordinate inversion positioning method and device
  • Double-magnetic-parameter coordinate inversion positioning method and device
  • Double-magnetic-parameter coordinate inversion positioning method and device

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[0037] Next, the technical scheme in the present application embodiment will be described in the present application, and it is understood that the described embodiments are intended to be described herein, not all of the embodiments of the present application. The following description of at least one exemplary embodiment is actually illustrative, and it is not necessary to use any limits for the application or use thereof. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative labor, are the scope of the present application.

[0038] Unless otherwise specified, the relative arrangement, digital expression, and numerical values ​​of the components and steps set forth in these embodiments are not limited to the scope of the present application. For technical, methods, and equipment known to those of ordinary skill in the art may not be discussed in detail, in appropriate, the techniques, methods, and equi...

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Abstract

The invention discloses a dual-magnetic coordinate inversion positioning method and device. The method comprises the following steps of acquiring the total intensity F and a magnetic dip angle I of a geomagnetic field at a current position; calculating the geographic latitude and longitude of the current position corresponding to the total intensity F and the magnetic dip angle I of the geomagnetic field by using a nonlinear relation model; and judging whether a target position is reached or not according to the difference value between the geographic longitude and latitude of the current position and the geographic longitude and latitude of the target position. By establishing the nonlinear mapping relation between the geomagnetic coordinates and the longitudes and latitudes, the geographic longitudes and latitudes of the position can be obtained only by measuring the total magnetic field intensity and the magnetic dip angle of the position, and the very good practicability and product portability are achieved.

Description

Technical field [0001] The present application belongs to the field of positioning navigation technology, and specific to the use of geophysical navigation techniques, in particular, to a two-magnetic coordinate inversion positioning method and apparatus. Background technique [0002] The use of ground magnetic field navigation has high concealed properties and strong autonomy. It is an important branch of active navigation. At present, research on magnetic field navigation is mainly focused on magnetic map-based matching algorithms and magnetic gauge search methods based on bionic evolution. [0003] However, the magnetic map matching algorithm requires an Earth's magnetic field map of the target area in advance, including the seven components of the magnetic parameter, and the navigation accuracy is positively correlated with the magnetic map resolution, and the calculation load will increase rapidly with the magnetic map resolution. [0004] Although the target search method b...

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Application Information

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IPC IPC(8): G01C21/08
CPCG01C21/08
Inventor 李子圆于化鹏沈同圣
Owner NAT INNOVATION INST OF DEFENSE TECH PLA ACAD OF MILITARY SCI
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