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Positioning Infrastructure

The Positioning Infrastructure of Hong Kong is established and maintained by Lands Department in order to provide accurate and reliable horizontal and vertical position reference data and services for mapping, land boundary survey, land administration, town planning, civil engineering, infrastructure development, navigation, rescue and searching, etc.

The Positioning Infrastructure comprises the following:

Please visit for viewing the products and services of the Positioning Infrastructure of Lands Department in details.

Introduction of SatRef system

Introduction of SatRef system