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ISPRS Int. J. Geo-Inf. 2016, 5(9), 161; doi:10.3390/ijgi5090161

A Subdivision Method to Unify the Existing Latitude and Longitude Grids

1
College of Engineering, Peking University, Beijing 100871, China
2
Zhengzhou Institute of Surveying and Mapping, Zhengzhou 450001, China
*
Author to whom correspondence should be addressed.
Academic Editor: Wolfgang Kainz
Received: 14 May 2016 / Revised: 24 August 2016 / Accepted: 1 September 2016 / Published: 13 September 2016
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Abstract

As research on large regions of earth progresses, many geographical subdivision grids have been established for various spatial applications by different industries and disciplines. However, there is no clear relationship between the different grids and no consistent spatial reference grid that allows for information exchange and comprehensive application. Sharing and exchange of data across departments and applications are still at a bottleneck. It would represent a significant step forward to build a new grid model that is inclusive of or compatible with most of the existing geodesic grids and that could support consolidation and exchange within existing data services. This study designs a new geographical coordinate global subdividing grid with one dimension integer coding on a 2n tree (GeoSOT) that has 2n coordinate subdivision characteristics (global longitude and latitude subdivision) and can form integer hierarchies at degree, minute, and second levels. This grid has the multi-dimensional quadtree hierarchical characteristics of a digital earth grid, but also provides good consistency with applied grids, such as those used in mapping, meteorology, oceanography and national geographical, and three-dimensional digital earth grids. No other existing grid codes possess these characteristics. View Full-Text
Keywords: global subdivision; latitude and longitude grids; consistency analysis; isomorphism global subdivision; latitude and longitude grids; consistency analysis; isomorphism
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Cheng, C.; Tong, X.; Chen, B.; Zhai, W. A Subdivision Method to Unify the Existing Latitude and Longitude Grids. ISPRS Int. J. Geo-Inf. 2016, 5, 161.

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