SIGNAL PROCESSING DEVICE

摘要

The signal processing device in accordance with the present invention includes: a frequency analyzer to convert a sensor signal corresponding to a radio wave reflected by an object into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a normalizer to normalize intensities of the signal passing through the individual filter banks by a sum of the signals extracted by the frequency analyzer or a sum of intensities of signals passing through predetermined filter banks, and output normalized intensities; and a recognizer to perform a recognition process of identifying the object based on at least one of a frequency distribution and a component ratio of the normalized intensities calculated from the normalized intensities of the individual filter banks outputted from the normalizer.

主权项

1. A signal processing device comprising:
a frequency analyzer configured to convert a sensor signal corresponding to a radio wave reflected by an object into a frequency domain signal, and extract, by use of a group of individual filter banks with different frequency bands, signals of the individual filter banks from the frequency domain signal; a normalizer configured to normalize intensities of the signals individually passing through the individual filter banks by a sum of the signals extracted by the frequency analyzer or a sum of intensities of signals individually passing through predetermined filter banks selected from the individual filter banks to obtain normalized intensities, and output the normalized intensities; and a recognizer configured to perform a recognition process of identifying the object based on at least one of a frequency distribution and a component ratio of the normalized intensities which are calculated from the normalized intensities of the individual filter banks outputted from the normalizer.