US 2008/0165046 A1 · System and method for intrusion detection using a time domain radar array

Abstract

A system and method for highly selective intrusion detection using a sparse array of ultra wideband (UWB) radars. Two or more UWB radars are arranged in a sparse array around an area to be protected. Each UWB radar transmits ultra wideband pulses that illuminate the area to be protected. Signal return data is processed to determine, among other things, whether an alarm condition has been triggered. High resolution radar images are formed that give an accurate picture of the area to be protected. This image is used to detect motion in a highly selective manner and to track moving objects within the protected area. Motion can be distinguished based on criteria appropriate to the environment in which the intrusion detection system operates.

Claims20

Dependent claims

A sensor array comprising:

a plurality of ultra wideband (UWB) sensors, said plurality of UWB sensors arranged in a sparse array, a first UWB sensor of said plurality of UWB sensors being configured to transmit first UWB signals, a second UWB sensor of said plurality of UWB sensors being configured to receive first signal returns of said transmitted first UWB signals reflecting off an object, said first signal returns corresponding to first forward scattering data;
and
a processor in communication with at least one of said plurality of UWB sensors, wherein said processor determines at least one characteristic of said object based on said first forward scattering data and uses said at least one characteristic and at least one established criteria to determine an alert condition.

Dependencies are inferred from the claim text.

Facts

Application

11/980,739Filed 31 Oct 2007

Priority

14 Jun 1999

Published

10 Jul 2008

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01S 7/003
Details of systems according to groups G01S13/00, G01S15/00, G01S17/00: transmission of data between radar, sonar or lidar systems and remote stations
G01S 7/4004
Means for monitoring or calibrating: of parts of a radar system
G01S 13/0209
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems: systems with very large relative bandwidth, i.e. larger…
G01S 13/04
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems: systems determining presence of a target

Family

Application09/332,502Continuation · filed 14 Jun 1999

Application09/767,131Continuation · filed 23 Jan 2001

Application10/131,598Continuation · filed 25 Apr 2002

Application10/449,602Continuation · filed 2 Jun 2003

Application10/806,131Continuation in part · filed 23 Mar 2004

Application11/980,739Continuation in part

Application10/806,131Continuation

US 2001/0035837 A1Published application

US 2002/0158790 A1Published application

US 2004/0027270 A1Published application

US 2007/0182618 A1Published application