US 8,912,943 B2 · Near field subwavelength focusing synthetic aperture radar with chemical detection mode

Abstract

Detection of objects such as a buried explosive device while operating from a moving platform using a radio frequency emission system having two modes. An electromagnetic wave emission and detection system operates in a first mode to locate objects of interest and in a second mode to determine if an object contains explosive materials. In the first mode, the emission and detection system preferably operates as a subwavelength focusing, wideband, superlens using a near field super gain synthetic aperture continuous wave (CW) swept radar. In the second mode the system preferably enabled after detection of an object in the first mode, uses chemical detection methods such as Nuclear Quadrupole Resonance (NQR).

Claims8

Dependent claims

A method for detecting a buried explosive object comprising:

disposing one or more radiating element(s) on a moving vehicle;
driving at least one of the radiating element(s) with first signal type comprising a wideband swept continuous wave signal;
detecting a response to the first signal type;
determining a presence of a buried object from the response to the first signal type;
and
subsequent to determining said presence of a buried object,
driving the same at least one radiating element with a second signal type;
detecting a response to the second signal type;
and
determining a chemical composition of the object from the response to the second signal type.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/705,343Filed 5 Dec 2012 · us provisional application

Priority

5 Dec 2011

Published

US 2014/0152486 A15 Jun 2014

Granted

16 Dec 2014

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

G01S 13/885
Radar or analogous systems specially adapted for specific applications: for ground probing
G01S 13/887
Radar or analogous systems specially adapted for specific applications: for detection of concealed objects, e.g. contraband or weapons
G01S 13/90
For mapping or imaging: using synthetic aperture techniques , e.g. synthetic aperture radar [SAR] techniques
G01S
Radio direction-finding

Near field subwavelength focusing synthetic aperture radar with chemical detection mode

Life of this patent

Near field subwavelength focusing synthetic aperture radar with chemical detection mode

Life of this patent

Abstract

Claims8