Remote detection and measurement of objects
First Claim
1. A system for remote detection of one or more dimensions of a metallic and/or dielectric object, comprising:
- a transmission apparatus, including a transmission element, configured to direct microwave and/or mm wave radiation in a predetermined direction,a detection apparatus configured to receive radiation from an entity resulting from the transmitted radiation and to generate one or more detection signals in the frequency domain, anda controller, the controller being operable to(i) cause the transmitted radiation to be swept over a predetermined range of frequencies,(ii) perform a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and(iii) determine, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident,wherein the controller is configured to normalize according to a range one or more transformed signals.
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Accused Products
Abstract
Provided are methods of using electromagnetic waves for detecting metal and/or dielectric objects. Methods include directing microwave and/or mm wave radiation in a predetermined direction using a transmission apparatus, including a transmission element; receiving radiation from an entity resulting from the transmitted radiation using a detection apparatus; and generating one or more detection signals in the frequency domain using the detection apparatus. Methods may include operating a controller, wherein operating the controller includes causing the transmitted radiation to be swept over a predetermined range of frequencies, performing a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and determining, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident.
9 Citations
26 Claims
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1. A system for remote detection of one or more dimensions of a metallic and/or dielectric object, comprising:
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a transmission apparatus, including a transmission element, configured to direct microwave and/or mm wave radiation in a predetermined direction, a detection apparatus configured to receive radiation from an entity resulting from the transmitted radiation and to generate one or more detection signals in the frequency domain, and a controller, the controller being operable to (i) cause the transmitted radiation to be swept over a predetermined range of frequencies, (ii) perform a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and (iii) determine, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident, wherein the controller is configured to normalize according to a range one or more transformed signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for remote detection of one or more dimensions of a metallic and/or dielectric object, comprising:
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directing microwave or mm wave radiation in a predetermined direction using a transmission apparatus, including a transmission element; receiving, via a detection apparatus, radiation from an entity resulting from the transmitted radiation; generating, via the detection apparatus, one or more detection signals in the frequency domain; and via a controller; (i) causing the transmitted radiation to be swept over a predetermined range of frequencies, (ii) performing a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and (iii) determining, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident, wherein step (i) comprises stepwise sweeping by predetermined steps in frequency; and
step (ii) comprises (iia) performing a transform operation after each step to produce a time domain or optical depth domain trace, and (iib) storing each time domain and/or optical depth domain trace in a respective sweep channel, said time domain or optical depth domain traces thereby comprising said transformed signals. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A system for remote detection of one or more dimensions of a metallic and/or dielectric object, comprising:
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a transmission apparatus, including a transmission element, configured to direct microwave and/or mm wave radiation in a predetermined direction; a detection apparatus configured to receive radiation from an entity resulting from the transmitted radiation and to generate one or more detection signals in the frequency domain; and a controller, the controller being operable to (i) cause the transmitted radiation to be swept over a predetermined range of frequencies, (ii) perform a transform operation on the detection signal(s) to generate one or more transformed signals in the time domain, and (iii) determine, from one or more features of the transformed signal, one or more dimensions of a metallic or dielectric object upon which the transmitted radiation is incident, wherein the transmission element comprises a directional element that may be pointed by a user at the entity and that provides a beam of radiation, whereby the width of the beam is commensurate to the maximum dimension of a threat object to be detected, the beam are being illuminated by the beam at a predetermined distance, and wherein the predetermined range of frequencies corresponds to the transformed signals having a range resolution that enables the threat object to be detected and distinguished from other objects, based on the features.
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Specification