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Interferometric millimeter wave and THz wave doppler radar

United States Patent

August 11, 2015
View the Complete Patent at the US Patent & Trademark Office
A mixerless high frequency interferometric Doppler radar system and methods has been invented, numerically validated and experimentally tested. A continuous wave source, phase modulator (e.g., a continuously oscillating reference mirror) and intensity detector are utilized. The intensity detector measures the intensity of the combined reflected Doppler signal and the modulated reference beam. Rigorous mathematics formulas have been developed to extract bot amplitude and phase from the measured intensity signal. Software in Matlab has been developed and used to extract such amplitude and phase information from the experimental data. Both amplitude and phase are calculated and the Doppler frequency signature of the object is determined.
Liao; Shaolin (Willowbrook, IL), Gopalsami; Nachappa (Naperville, IL), Bakhtiari; Sasan (Darien, IL), Raptis; Apostolos C. (Downers Grove, IL), Elmer; Thomas (Westmont, IL)
UChicago Argonne, LLC (Chicago, IL)
13/ 873,898
April 30, 2013
STATEMENT OF GOVERNMENT INTEREST The United States Government has rights in the invention described herein pursuant to Contract No. DE-AC02-06CH11357 between the United States Department of Energy and UChicago Argonne, LLC, as operator of Argonne National Laboratory.