US 7,583,221 B2 · Method and device for imaging test objects by means of millimeter waves, in particular for inspecting individuals for suspicious objects

Abstract

A method for imaging test objects by millimeter waves, especially for checking individuals for suspicious objects is provided, whereby the test object is gradually irradiated with millimeter waves along its circumference and the scattered waves are received and evaluated in order to display an image of the test object. A viewing direction of the transmitting area and a direction of reception of the receiving area extend at an angle of 15° to 70°, preferably 20° to 35° to the longitudinal axis of the test object. For evaluation of the scattered waves in the direction of the longitudinal axis of the test object, a pulse radar or FMCW radar technology is used, and for evaluation at an angle to the longitudinal axis, SAR technology is used.

Claims14

Dependent claims

A method for imaging at least one test object by millimeter waves, in particular for inspecting individuals for suspicious objects, the method comprising:

illuminating the test object successively with millimeter waves along a circumference of said test object;
and
receiving and analyzing scattered waves to display an image of the test object,
wherein a direction of view of a transmitting antenna and a direction of reception of the receiving antenna are inclined at an angle of 15° to 70° to a longitudinal axis of the test object, and
wherein a pulse radar or FMCW radar principle is used to analyze radiation scattered in the direction of the longitudinal axis of the test object and the SAR principle is used for analysis perpendicular to the longitudinal axis.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

11/869,716Filed 9 Oct 2007 · continuation

Priority

DE 10 2005 016 14068 Apr 2005

Published

US 2008/0174476 A124 Jul 2008

Granted

1 Sep 2009

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G01S 13/887
Radar or analogous systems specially adapted for specific applications: for detection of concealed objects, e.g. contraband or weapons
G01S 13/87
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose…:…
G01S 13/89
Radar or analogous systems specially adapted for specific applications: for mapping or imaging
G01V 8/005
Prospecting or detecting by optical means: operating with millimetre waves, e.g. measuring the black losey radiation

Method and device for imaging test objects by means of millimeter waves, in particular for inspecting individuals for suspicious objects

Life of this patent

Method and device for imaging test objects by means of millimeter waves, in particular for inspecting individuals for suspicious objects

Life of this patent

Abstract

Claims14