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Award ID contains: 1915738

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  1. ; ; ; ; (, Biomedical Signal Processing and Control)
    Free, publicly-accessible full text available February 1, 2026
  2. ; ; ; (, IEEE)
    Free, publicly-accessible full text available January 22, 2026
  3. ; ; ; ; ; (, IEEE)
    Free, publicly-accessible full text available January 22, 2026
  4. ; ; ; (, IEEE)
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  5. ; ; ; ; ; ; (, IEEE)
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  6. ; ; ; ; ; ; (, IEEE Journal of Microwaves)
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  7. ; ; ; (, IEEE)
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  8. ; ; ; ; ; (, IEEE)
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  9. ; ; ; ; (, IEEE)
    This paper proposes a spectral binning method for the classification of locomotion and extraneous body motion (EBM) that may occur during Continuous Wave (CW) Doppler radar motion sensing of human subjects. The method analyzes the spectral content of the arctangent demodulated displacement signature, generating an activity classification based on the magnitude of the spectral content for each of several frequency bins. The choice and number of bins used for the overall classification of data were determined by analyzing experimental data. The method successfully classified sedentary, EBM, and locomotion states for 5 subjects. The method can be used both for determining the presence and type of activity, and for recognizing when data segments are not suitable for monitoring sedentary vital signs. 
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  10. ; ; ; ; (, IEEE)
    Physiological Doppler radar measurements for respiration do not typically take into consideration polarimetric effects caused by scattering from the irregular surface of the respiring torso. This study investigated the performance of a physiological Doppler radar system using both vertically and horizontally polarized transmit antennas, each in combination with both vertically and horizontally polarized receive antennas. Return signatures were analyzed for robotic phantom targets with varied arrangements of curvature, and for a representative group of human subjects. The results showed that while cylindrical targets generated significant amounts of cross-polarized return signal, typical human subject return signals produced an even larger proportion of cross-polarized signal. 
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