DEMETER - Navigation Aid Coverage Calculation Tool

PC-based tool to help in the planning of terrestrial navigation aid resources.

DEMETER is a stand-alone desktop application to aid airspace planners, procedure designers and navigation aid (NavAid) operators with the assessment of the coverage provided by ground-based navigation aids. Precision Area navigation is based upon GNSS and DME/DME positioning solutions and DEMETER allows the DME coverage, anticipated performance and redundancy to be assessed. It is anticipated that the current VOR infrastructure will gradually be decommissioned and this tool also allows the effects of such changes to be analysed.

DEMETER has been designed to meet the needs of airspace requirements in ECAC, including B-RNAV, P-RNAV and RNP navigation applications, and includes the following features:

• NavAid database for VOR, DME, VOR-DME, TACAN, and VORTAC.
• High quality terrain database supporting DTED levels 0, 1 and 2. GTOPO30 data is used where DTED is unavailable.
• Coverage, performance and redundancy calculations.
• Route definition using pre-defined ICAO identifiers, or user-defined positions.
• Route calculation giving best (and alternate) NavAid pairs for use along a pre-defined route.
• Enhanced performance calculations (approximating to RNP) based on accuracy/continuity.

Developed as an extension for commercially available Graphical Information Systems (GIS) software, ArcView Version 3.x.

Problems or Inquiries: Email DEMETER Helpdesk