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Title: Ultra-wideband radar motion sensor

A motion sensor is based on ultra-wideband (UWB) radar. UWB radar range is determined by a pulse-echo interval. For motion detection, the sensors operate by staring at a fixed range and then sensing any change in the averaged radar reflectivity at that range. A sampling gate is opened at a fixed delay after the emission of a transmit pulse. The resultant sampling gate output is averaged over repeated pulses. Changes in the averaged sampling gate output represent changes in the radar reflectivity at a particular range, and thus motion. 15 figs.
Inventors:
Issue Date:
OSTI Identifier:
6829639
Assignee:
Univ. of California, Oakland, CA (United States) PTO; EDB-94-164772
Patent Number(s):
US 5361070; A
Application Number:
PPN: US 8-044717
Contract Number:
W-7405-ENG-48
Resource Relation:
Patent File Date: 12 Apr 1993
Country of Publication:
United States
Language:
English
Subject:
98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION; MOTION DETECTION SYSTEMS; DESIGN; MEASURING METHODS; RADAR; SECURITY; TIME DELAY; ALARM SYSTEMS; MEASURING INSTRUMENTS; RANGE FINDERS 055001* -- Nuclear Fuels-- Safeguards, Inspection, & Accountability-- Technical Aspects