Evidence right and fractal-based full-moon landing area site selection method

A technology of landing zone and evidence, applied in the field of image processing, can solve the problems of more human factor intervention and heavy workload, and achieve the effect of reducing workload and human factor intervention

Pending Publication Date: 2022-04-22
JILIN UNIV
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  • Application Information

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Problems solved by technology

Although the scope of the landing area can be delineated in this way, the workload is relatively large and human factors interfere more

Method used

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  • Evidence right and fractal-based full-moon landing area site selection method
  • Evidence right and fractal-based full-moon landing area site selection method
  • Evidence right and fractal-based full-moon landing area site selection method

Examples

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Embodiment 1

[0073] Embodiment 1 provides a method for selecting the location of the full moon landing zone based on the right of evidence and fractal, according to figure 1 As shown, specifically:

[0074] In specific applications, the evidence factors include lunar shell thickness, roughness map, slope, digital elevation model, gravity gradient, iron oxide content distribution, and lunar soil optical maturity, and the target layer includes the landed point;

[0075] In the specific application, based on data preprocessing, the division of the full-month grid, the clipping of the edge pixels of the evidence layer, the calculation of the network mean, and the binary variables of the evidence layer and the target layer are completed. express;

[0076] In the specific application, the prior probability, the weight of each evidence factor in each cell grid and the posterior probability are calculated based on the weight of evidence method;

[0077] In the specific application, based on the ...

Embodiment 2

[0081] Embodiment 2 provides a method for selecting the location of the full moon landing area based on the right of evidence and fractal, according to figure 2 As shown, the specific steps are as follows:

[0082] S1. Carry out grid division for the whole month, calculate the number of impact craters contained in each unit grid, and obtain the network mean layer corresponding to each evidence factor by calculating the grid mean value;

[0083] In this embodiment, the full moon range used is 20037.4km*40074.4km, which is divided into 72*144 grids, that is, the size of each grid is set to 278.3km*278.3km.

[0084] In this embodiment, the grid mean value is the mean value of the pixel points in the unit grid, and the evidence factors include lunar shell thickness, roughness map, slope, digital elevation model, gravity gradient, iron oxide content distribution, and lunar soil optics. maturity;

[0085] Based on the aforementioned step S1, in the specific processing process, fi...

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Abstract

The invention relates to an evidence right and fractal-based full-moon landing area site selection method, and the method comprises the steps: obtaining a network mean value layer corresponding to each evidence factor based on grid division; calculating a prior probability of each evidence factor and a weight and a posterior probability of each evidence factor in each unit grid based on two-state variable representation; determining a first threshold value based on a fractal theory, and determining the distribution complexity of the impact craters in each unit grid according to the first threshold value; correcting the posterior probability of each evidence factor based on the index value of the unit grid; and obtaining a posterior probability graph through color rendering, and carrying out site selection of the whole-moon landing area in combination with an expert screening graph layer and an impact crater database. According to the method, the traditional mode of manually determining a suitable landing area under the engineering constraint condition according to scientific requirements is changed, the workload and human factor intervention are greatly reduced, the landing range can be well delineated without a large amount of professional knowledge, and the method has reference significance for landing area site selection in the lunar exploration task.

Description

technical field [0001] The application belongs to the technical field of image processing, and in particular relates to a method for selecting a site for a full-moon landing zone based on evidence rights and fractals. Background technique [0002] The moon is the only natural satellite of the earth, and it is also the closest celestial body to us except meteors and man-made celestial bodies. It naturally became the focus of early deep space exploration. In addition, lunar exploration is conducive to the development of science and technology. The exploration of the moon can not only reveal the mysteries of science, but also promote the development of science and technology in other fields, such as launch vehicles, artificial intelligence, robots, remote control operations, hypersonic flight, etc. Can bring great benefits to the national economy. [0003] At present, the main method for selecting the site of the full-moon landing area at home and abroad is that experts determ...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06T17/05G06T17/20G06F111/04
CPCG06F30/23G06T17/05G06T17/20G06F2111/04
Inventor 曹亚琴王永志刘建忠曾小家
Owner JILIN UNIV
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