| Paper: | ITT-P4.5 | ||
| Session: | Biomedical and biometric applications | ||
| Time: | Friday, May 21, 15:30 - 17:30 | ||
| Presentation: | Poster | ||
| Topic: | Industry Technology Track: Biomedical | ||
| Title: | AN EXTENDED SPECTRAL OBSERVER FRAMEWORK IN APPLICATION TO MULTIPLE-CHANNEL OPTICAL MEASUREMENTS | ||
| Authors: | Evgeny Seider; OrSense | ||
| Naum Chernoguz; OrSense | |||
| Abstract: | The problem of multiple-wavelength optical measurement arises in oximetry, glucometry and other biomedical fields. Due to the apparatus complexity, commercial devices, however, suffice in few, say 2-3 wavelengths. The study describes design principles of a multiple-channel optical system with increased number of wavelengths. The development is performed with the emphasis on the DSP and its adjustment to the application requirements. Several basic principles of signal processing are involved. Conceptually, the DSP framework represents an extended spectral observer, where each resonator relates to a probe waveform or, in contrary, to disturbance. Among other parameters, unknown or time-varying frequencies may be learned using methods of adaptive filtering. The resonator bandwidth can be properly adjusted with regard to the changing signal/noise ratio. Decimation procedure implemented in the DSP is linked with the waveform generation. This extended framework of signal processing enables an optimized engineering design of the multiple-light optical system with adjustable performance. | ||
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