Whole-space information system-oriented coordinate system conversion method

Abstract

The invention provides a whole-space information system-oriented coordinate system conversion method, and belongs to the field of geospatial information visualization. A space conversion framework ofa whole-space information system is established, and description of WKT on a space reference system is extended to enable the same to support definition of planets and coordinate systems of celestial-sphere coordinate systems, orbit coordinate systems and the like; and a space reference memory model based on a nine-degree-of-freedom space reference tree is designed, and thus maintenance of the space reference tree, calculation of relative status and plug-in realization of the coordinate system conversion method are realized. The method can effectively solve continuous whole-space-time modelingand simulation of the whole-space information system from macroscopic worlds (such as stars and planets in a solar system) to microcosmic worlds (such as indoor environments), from static status to dynamic status and from physical space-time to logical space-time, has good scalability and realization efficiency, and can be widely applied to many fields of satellite positioning and navigation, aerospace remote-sensing, smart cities, territorial planning, military application and the like.

Description

technical field [0001] The invention belongs to the field of geographic space information visualization, and relates to a coordinate system conversion method oriented to the whole space information system. Background technique [0002] After more than 50 years of development, GIS has developed into a comprehensive high-tech field including geographic information science, geographic information technology, and geographic information applications. It has been widely used in the fields of life and health, planning and regional design, and has become an indispensable part of today's information society. However, traditional GIS mainly studies the earth's surface system, focusing on the surface space closely related to human production and life. With the rapid development of technology, traditional GIS has gradually exposed its shortcomings and is facing new opportunities and challenges. For this reason, scholars represented by academician Zhou Chenghu of the Chinese Academy of...

AI Technical Summary

Problems solved by technology

Spatial reference has been deeply researched and implemented in traditional GIS. Software and organizations such as Proj4, ArcGIS, OGC, and EPSG have described and implemented spatial reference in detail, but these descriptions are mainly for the geographic coordinate system and projection of earth space. The coordinate system cannot solve the complex space seamless transformation problem of the whole space information system, which expands from earth space to cosmic space, from macro space to micro space, and from a single planet space to many planet spaces.

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