Novel Calibration Method for Biomedical Spectral Systems
Alexander V. Ilinskii1; Nadezhda K. Maltseva1; 1ITMO University, Saint Petersburg, Russia
Abstract
Novel Calibration Method for Biomedical Spectral Systems is based on the concept of the spectral coordinate of the radiation flux, which is calculated from the spectral distribution of this flux within the operating spectral range and makes it possible to eliminate the methodological error in measuring the spectral sensitivity characteristics of a measuring photodetector.
During the operation of SAP, it produces a spectrogram of the analyzed radiation, which is an altered image of the real spectrum of the source due to the selectivity of optical characteristics of the device. To eliminate or take these distortions into account, in particular, it is necessary to calibrate BSS for spectral sensitivity. In this paper, it is proposed to understand as such the integral of the BSS hardware function in terms of the wavelength of its tuning. The spectral characteristic of BSS sensitivity is a very rapidly changing function of two variables and its measurement is not an easy technical task.
In the proposed method, this problem is eliminated by using the spectrogram integration procedure. As a result, selective correction of spectrograms is achieved by means of smooth, calibrated, one-dimensional, spectral characteristics of the SAP sensitivity.
The methodological uncertainty of the result of measuring spectral sensitivity using this technique will be zero if the measured characteristic changes linearly within the spectral range occupied by the specrosonal flow.
Speaker
Eugine O. Raskin
ITMO University
Russian Federatuin
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