Owner Locata Corporation Pty Ltd

Inventors Lamance, James Jr. W; Small, David

Agent Locata Corporation

Pub. Number AU-B-2004262053

PCT Pub. Number WO2005/012935

Priority 2003904083 05.08.03 AU

Filing date 4 August 2004

Wipo publication date 10 February 2005

Acceptance publication date 18 June 2009

G01S 1/00 (2006.01) Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters

G01S 5/02 (2006.01) Position-fixing by co-ordinating two or more direction or position-line determinations - using radio waves

G01S 11/02 (2006.01) Systems for determining distance or velocity not using reflection or reradiation

H04B 7/185 (2006.01) Radio transmission systems, i.e. using radiation field - Space-based or airborne stations

G01S 5/14 (2006.01) Position-fixing by co-ordinating two or more direction or position-line determinations - Determining absolute distances from a plurality of spaced points of known location