METHOD AND DEVICE FOR IMAGING TEST OBJECTS BY MEANS OF MILLIMETER WAVES, IN PARTICULAR FOR INSPECTING INDIVIDUALS FOR SUSPICIOUS OBJECTS
First Claim
1. 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 is illuminated successively with millimeter waves along a circumference; 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°
, preferably 20°
to 35°
, to a longitudinal axis of the test object, andwherein 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.
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Accused Products
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.
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Citations
10 Claims
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1. A method for imaging at least one test object by millimeter waves, in particular for inspecting individuals for suspicious objects, the method comprising:
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illuminating the test object is illuminated successively with millimeter waves along a circumference; 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°
, preferably 20°
to 35°
, to a longitudinal axis of the test object, andwherein 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. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device comprising:
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at least one transmitting and receiving system which successively illuminates the test object with millimeter waves along a circumference and which receives the scattered waves; and an analysis system, which produces an image of the test object from the received waves, wherein a transmitting antenna and a receiving antenna of each transmitting and receiving system are oriented such that the direction of view of the transmitting antenna and the direction of reception of the receiving antenna are inclined at an angle of 15°
to 70°
, preferably 20°
to 35°
, to a longitudinal axis of the test object (2), andwherein a pulse radar or FMCW radar principle is used by the analysis system 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. - View Dependent Claims (9, 10)
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Specification