Passive moving object detection system and method using...

Details Passive moving object detection system and method using... Passive moving object detection system and method using...

2005-08-16

2005-08-16

Phan, Dao (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Directive

Position indicating

C342S450000, C342S458000, C342S461000

Reexamination Certificate

active

06930638

ABSTRACT:
A passive object detection system (1) comprises first and second antennas (4, 6) and a processor (8). The first antenna (4) is adapted to receive a signal transmitted by a mobile telephone base station; the second antenna (6) is adapted to receive the signal transmitted by a mobile telephone base station (2) after it has been reflected off an object (3) and the processor compares the signal received from the mobile telephone base station with the signal reflected from the object to derive speed or position information relating to the object therefrom.

REFERENCES:
patent: 3943514 (1976-03-01), Afendykiw et al.
patent: 5604503 (1997-02-01), Fowler et al.
patent: 6011515 (2000-01-01), Radcliffe et al.
patent: 6232922 (2001-05-01), McIntosh
patent: 6243587 (2001-06-01), Dent et al.
patent: 6549165 (2003-04-01), Neira et al.
patent: 6580392 (2003-06-01), Yu
patent: WO 01/22117 (2001-03-01), None
patent: WO 02/35252 (2002-05-01), None

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