Scale feature of moving trajectory

doi:10.13474/j.cnki.11-2246.2020.0127

Abstract

Abstract: Moving trajectory is a trace of a moving object that moves in geospatial environment for a certain purpose. Featured by spatial scale, time scale and semantic scale, moving trajectory data is a special kind of geographic spatiotemporal data. Firstly, the spatial scale feature and time scale feature of moving trajectory data are analyzed in this paper, and the transformation relationship between spatial scale and time scale is established. Secondly, the semantic connotation and semantic scale feature of the trajectory are studied. Four trajectory semantic categories such as moving object, geospatial environment, moving mode and collecting equipment are proposed, and semantic multi-scale characteristics of the trajectory are analyzed from the perspective of geographical environment. Finally, the consistency relationship between the semantic scale and the space-time scale is discussed.

Key words: moving trajectory, trajectory semantic, spatiotemporal scale, semantic scale, semantic connotation

CLC Number:

P208

LIU Minshi, LONG Yi, SUN Yong. Scale feature of moving trajectory[J]. Bulletin of Surveying and Mapping, 2020, 0(4): 134-138.

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