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Stereographic projection is a method of projecting points on the surface of the earth or sphere from a certain point (usually a pole) of the sphere onto a plane. This projection method distributes points on the sphere and projects them from a certain point to the projection plane opposite it, and finally presents them in the form of a circular map. This method was invented by ancient Greek mathematicians and is widely used in many fields such as astronomy, crystallography and map making.

WT file is a tile data format mainly used for 3D tile maps and geographic information systems (GIS), designed for efficient display and distribution of large-scale geospatial data. This file format is the abbreviation of Web Tile and is widely used in web-based 3D visualization platforms and geospatial applications. Especially in GIS platforms such as Wings Engine, the WT format is adopted to efficiently distribute large-scale 3D city models and geospatial data.

LYRX files are project file formats used in ArcGIS Pro software. They are the core files of ArcGIS Pro projects, which store project configuration information, map layers, toolboxes, layouts, styles, and other related resources. Through LYRX files, users can save and share the entire GIS project, including map, data, analysis, and geoprocessing tool settings.

JGD2000 is the national surveying system of Japan officially adopted by the Geospatial Information Authority of Japan in April 2002, replacing the previous “Tokyo Datum”. The main purpose of its introduction is to enhance the coordination with the global GPS coordinate system. JGD2000 is based on the geocentric coordinate system (ITRF: International Terrestrial Reference Frame) with the center of the earth as the origin, thus achieving higher-precision measurement and GIS analysis capabilities.

DWG (Drawing) files are a standard format for CAD (Computer-Aided Design) data developed by Autodesk. This format is widely used in architectural design, engineering, manufacturing and other fields, and is compatible with Autodesk’s AutoCAD and many other CAD software. DWG files contain 2D graphic data, 3D model data, layer information, dimensions, annotations, block information, etc., which can efficiently store and manage accurate design data. Since DWG is stored in binary format, the file size is small and the processing speed is fast, which is one of its main features.

XML (Extensible Markup Language) is a markup language used to describe and store structured data. Its tag structure is similar to HTML, but its purpose is specifically for expressing and exchanging data, and users can define their own tags. It is mainly used for data integration between systems, setting files, configuration information, etc.

GPF-DIME is a file format used to manage and store remote sensing image data and other geospatial data. It is mainly used for the storage, processing and transmission of remote sensing images. By providing a flexible and efficient data structure, this format allows users to use it to store and process images in different environments, especially when processing large-scale, high-resolution image data.

SuperMap is developed by Beijing SuperMap Software Co., Ltd. It combines spatial data processing, geographic information visualization and powerful spatial analysis functions. SuperMap mainly consists of four parts: desktop tools (SuperMap Desktop), secondary development components (SuperMap Objects), network development tools (SuperMapIS .NET) and embedded development tools (eSuperMap).

MID files are part of the data format used by MapInfo (Map Information), a GIS software. MapInfo is a software used to process geographic information and is widely used in commercial GIS, urban planning, geographic analysis and other fields. MID files are used in conjunction with corresponding MIF (MapInfo Interchange Format) files to store attribute information of GIS data.

SDE (Spatial Database Engine) is a software component used to manage and store geospatial data. SDE is a technology developed by Esri that is used to interact with geographic database systems and provide efficient management, query, and editing of spatial data.