Patent Document ID: 8924214
Application ID: 13155218

Base Claim:
1. A method for detecting and recognizing speech, comprising the steps of: remotely detecting body motions from a speaker during vocalization with one or more radar sensors supporting a plurality of simultaneous diverse wavelengths, wherein the body motions comprise small vibrational displacements and articulator motions; extracting Doppler signals correlated with the speaker vocalization; developing feature vectors utilizing the vocalization Doppler signals; and recognizing words associated with the feature vectors with a word classifier.

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Claim 4:
4. The method of claim 1 , wherein the step of extracting Doppler signals correlated with the vocalization, comprises the steps of: converting scattered radio frequency energy from body motions into an intermediate frequency in a receiver at each diverse wavelength; summing the intermediate frequency with a clutter nulling feedback circuit to attenuate clutter signals, wherein the clutter signals comprise signals correlated to non-vocalizing body motions; and transmitting the remaining Doppler signals correlated to the speaker vocalization to a signal processor.