Abstract: A beacon for a ranging system includes an electronic scanned array (ESA) antenna and a transceiver. The ESA antenna is configured to emit a separate radio frequency (RF) phased-array narrow beam for each of a plurality of segments of an arc, and receive from an end user node a response signal based on at least one of the RF phased-array narrow beam. Each segment of the arc is scanned at a specified time interval. The transceiver is configured to transmit a pulsed signal via the RF phased-array narrow beam, and receive the response signal.
Type:
Grant
Filed:
June 5, 2012
Date of Patent:
October 21, 2014
Assignee:
Corvas Technologies Corp
Inventors:
Glen Var Rosenbaum, Gordon J. Laughlin, Don Doerrse