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41 results about "Geo database" patented technology

GIS-based satellite coverage area rapid simulation method

PendingCN111985132AQuick visualizationExcellent analysis timeReconstruction from projectionDrawing from basic elementsLongitudeCelestial sphere
The invention discloses a GIS-based satellite coverage area rapid simulation method, which specifically comprises the following steps of: calculating geocentric angles of a satellite to-ground coverage domain and a satellite to-air coverage domain, and obtaining the geocentric longitude and geocentric latitude of a sub-satellite point by a spherical trigonometric formula; solving spatial data models of boundaries of the satellite to-ground coverage domain and the satellite to-air coverage domain; sequentially carrying out classification correction and Mercator projection processing on the spatial data models of the boundary of the satellite to-ground coverage domain and the boundary of the satellite to-air coverage domain to obtain spatial data models of the coverage domain boundaries on aMercator graph; and processing the spatial data models of the coverage domain boundaries on the Mercator graph through a GIS mapping technology to obtain a coverage domain Mercator projection graph of the satellite to a celestial sphere and a constellation coverage image generated by superposing a plurality of satellite coverage domains. The spatial data models of the coverage domain boundaries are classified and corrected, so that the geometric objects of the coverage domain boundaries can be created directly based on the azimuth angle algorithm for region filling, and coverage judgment point by point in the region is not needed.
Owner:INST OF MECHANICS - CHINESE ACAD OF SCI

Evaluation model device for prognosis of esophageal squamous cell carcinoma and modeling method thereof

The invention discloses an evaluation model device for prognosis of esophageal squamous cell carcinoma and a modeling method thereof. The evaluation model device for prognosis of esophageal squamous cell carcinoma comprises a GEO database module, a data acquisition module, a data preprocessing module, a content feature extraction module, a feature variable extraction module and a prognosis model establishment module, wherein the data acquisition module is used for acquiring gene expression data and prognosis data related to esophageal squamous cell carcinoma in the GEO database module; the data preprocessing module is used for preprocessing the gene expression data and the prognosis data related to esophageal squamous cell carcinoma; and the content feature extraction module is used for extracting content features of the data processed by the data preprocessing module. According to the invention, a tumor infiltration lymphocyte subtype related to survival time can be screened, and a prognosis model is established; and when new feature data exists, the survival time probability of a patient with esophageal squamous cell carcinoma can be obtained only by inputting the values of the feature data into a regression model, so the method has important significance in prognosis of esophageal squamous cell carcinoma.
Owner:FIRST HOSPITAL OF QINHUANGDAO

Geological mineral product spatial database construction method and system, electronic equipment and storage medium

The invention discloses a geological mineral product spatial database construction method and system, electronic equipment and a storage medium, and the method comprises the steps: carrying out the construction of a data model on the basis of demand analysis under the guidance of an information science thought; according to the method, high integration and multi-view multi-level storage of geological mineral data of different historical stages, different sources and different types in a structured mode can be realized, and the application technical difficulty of logicalization and structuring of theoretical research and logicalization and structuring matching of a spatial data model is solved; the automatic construction of the geological mineral product spatial database can be realized, and the construction efficiency is improved. Moreover, according to the method, unstructured data can be converted into structured data, and the structured data are stored in a geological mineral product spatial database mode, so that the efficiency and effect of database construction and application are improved, the cost of data management, database construction and application is reduced, and manpower and material resources are saved.
Owner:INST OF GEOLOGY CHINESE ACAD OF GEOLOGICAL SCI
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