The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 13, 2021
Filed:
Oct. 16, 2018
Applicant:
California Institute of Technology, Pasadena, CA (US);
Inventor:
Darmindra D. Arumugam, Pasadena, CA (US);
Assignee:
CALIFORNIA INSTITUTE OF TECHNOLOGY, Pasadena, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01V 3/12 (2006.01); G01N 21/47 (2006.01); G01S 13/88 (2006.01); G01S 13/90 (2006.01); G01S 7/02 (2006.01); G01N 24/08 (2006.01);
U.S. Cl.
CPC ...
G01V 3/12 (2013.01); G01N 21/47 (2013.01); G01N 24/081 (2013.01); G01S 7/025 (2013.01); G01S 13/885 (2013.01); G01S 13/9011 (2013.01); G01N 2021/4792 (2013.01); G01S 13/90 (2013.01);
Abstract
Subsurface imaging with information of shape, volume, and dielectric properties is achieved with low frequencies and a ramp waveform. The low frequencies have a lower attenuation compared to the penetration losses of radar frequencies. The technique operates at wavelengths which are comparable to the object or void being imaged, and can be applied to detect and image underground aquifers, magma chambers, man-made tunnels and other underground structures.