Patent ID: 11860266
Assignee: RICHWAVE TECHNOLOGY CORP.
Field: Medical technology (Instruments)
Classification: CPC G  A | IPC A  G

Claim 0:
1. A method of detecting a life, the method comprising:
receiving an echo signal comprising an in-phase component and a quadrature component, the echo signal being generated by a life;
performing a preprocessing procedure on the echo signal to generate a preprocessed signal;
generating, according to the preprocessed signal, complex conjugate data associated with the in-phase component and the quadrature component;
performing a first time-domain-to-frequency-domain transform on the complex conjugate data to generate Doppler spectrogram data comprising a plurality of positive velocity energies and a plurality of negative velocity energies;
generating combined Doppler spectrogram data according to the plurality of positive velocity energies and the plurality of negative velocity energies;
performing a second time time-domain-to-frequency-domain transform on the combined Doppler spectrogram data to generate spectrum data; and
determining whether the life is detected according to the spectrum data.