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REPRESENTATION OF GRADIENTS OF A SCALAR FIELD ON THE SPHERE USING A 2D FOURIER EXPRESSION
2D Fourier series gradients representation coefficients D-functions spectral transfers
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2016/1/18
Representation of data on the sphere is conventionally done using spherical harmonics. Making use of the Fourier series of the Legendre function in the SH representation results in a 2D Fourier expres...
THE NEW REFERENCE FRAME ABOUT THE SPATIAL ORIENTATION EXPRESSION FOR WAY-FINDING
Orientation Relationship Reference Frame GIS
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2015/8/10
Orientation relationship in the spatial relationship is an important in GIS. The orientation information about the urban environment is directly available to human beings through perception and is cru...
THE EXPRESSION OF SPHERICAL ENTITIES AND GENERATING OF VORONOI DIAGRAM BASED ON TRUNCATED ICOSAHEDRON DGG
Truncated Icosahedron Management of Three Leaves Nodes Hexagonal Grid Tiles Code Spherical Dynamic Data Model Voronoi Diagram
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2015/8/10
Based on the analysis of current spherical spatial data structure, the paper discusses the clew of the spherical spatial basal subdivision mode which uses inverse Snyder polyhedron equal area projecti...
Multi-spetral Data Integrated Process and Its Multimedia Expression in GIS
Multi-spatial information Multimedia integration Multimedia map Time-stamp
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2015/1/23
This paper introduces the basic types of multi-spetral data, and discusses the basic expressing and integrated displaying forms, namely multimedia map. Expressing of multi-spetral data and their relat...