Authors: 
Name Hao Ye isxhy@hotmail.com
Affiliation 	Nottingham Geospatial Institute
University of Nottingham
Country 	United Kingdom
Principal contact for editorial correspondence.
 
Name 	Michael Brown 
Affiliation 	Horizon Digital Economy Institute
University of Nottingham
Country 	United Kingdom
 
Name 	Jenny Harding 
Affiliation 	Ordnance Survey (Southampton)
Country 	United Kingdom