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Method for selecting geomagnetic matching adaptation area

A geomagnetic matching and adaptation area technology, applied in the field of navigation, can solve problems such as poor scalability of the adaptability conclusion, insignificant differences in comprehensive optimization indicators, and serious subjective influence on evaluation results, achieving obvious geomagnetic characteristics and reducing The influence of human factors, the effect of strong adaptability

Pending Publication Date: 2022-03-25
SHAANXI BAOCHENG AVIATION INSTR
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Problems solved by technology

[0004] 1) There is no obvious difference in the comprehensive optimization indicators of the various schemes, the evaluation results are seriously affected by the subjective, the objectivity is poor, and the resolution of the evaluation level is not strong
[0005] 2) The adaptive area method based on decision-making optimization conducts adaptive analysis from a quantitative point of view. The comprehensive eigenvalues ​​obtained each time and the adaptive evaluation index are only a relative correspondence, which can only be used as a matching area for adaptation. The basis for performance sorting, the scalability of the adaptability conclusion at this time is not strong

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  • Method for selecting geomagnetic matching adaptation area
  • Method for selecting geomagnetic matching adaptation area
  • Method for selecting geomagnetic matching adaptation area

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Embodiment Construction

[0063] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0064] see Figure 1-4 , detailing the embodiments of the present invention.

[0065] In the method for selecting a geomagnetic matching area in this embodiment, the geomagnetic characteristic parameters are stored in the computer in the form of a grid matrix. Let the longitude and latitude span of a certain area be m×n grid, F(i, j) is the total geomagnetic intensity at grid point coordinates (i, j).

[0066] Such as figure 1 As shown, the embodiment of th...

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Abstract

According to the method for selecting the geomagnetic matching adaptation area, the area which is obvious in geomagnetic characteristic, rich in information, high in adaptability and good in navigability is used for geomagnetic matching, the precision and the real-time performance of matching positioning can be effectively improved, and beneficial guidance can be provided for track design and route planning; meanwhile, the adaptability of the area is analyzed and evaluated from the qualitative perspective, the problem that in practical application, the exact adaptability value of a certain area does not need to be known sometimes, and only whether the area is suitable for matching or not needs to be known is solved, and the influence of human factors can be reduced to the maximum extent. The method is a beneficial attempt, provides a qualitative basis for matching area suitability analysis, enriches methods for selecting geomagnetic matching adaptation areas, and has important practical significance for evaluation of the geomagnetic matching adaptation areas.

Description

technical field [0001] The invention belongs to the technical field of navigation, and in particular relates to a method for selecting a geomagnetic matching adaptation area. Background technique [0002] Geomagnetic navigation is a navigation method based on geographical location. It has the advantages of all-weather, all-region, no radiation, high concealment, and error does not accumulate over time. Combining geomagnetic and inertial navigation is expected to achieve high-precision, autonomous, continuous, Long-term positioning needs. Getting a precise matching position is at the heart of geomagnetic navigation. In the geomagnetic matching positioning, the matching accuracy is not only related to the selected geomagnetic matching algorithm, but also has an important relationship with the selection of the geomagnetic matching area. [0003] The geomagnetic matching adaptation area is an important factor affecting the accuracy of geomagnetic navigation. At present, the re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06N3/08G06N3/02G06F17/16G06F17/11G01C21/08
CPCG06N3/02G06N3/08G06F17/16G06F17/11G01C21/08
Inventor 刘玉霞张鹏马让奎王新
Owner SHAANXI BAOCHENG AVIATION INSTR
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