대한의용생체공학회:학술대회논문집 (Proceedings of the KOSOMBE Conference)
- 대한의용생체공학회 1998년도 추계학술대회
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- Pages.78-79
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- 1998
LDF의 실시간 혈류추정을 위한 알고리즘
An algorithm for real time blood flow estimation of LDF
- Kim, Jong-Weon (Juseong College) ;
- Ko, Han-Woo (Korea Research Institute of Standards and Science)
- 발행 : 1998.11.20
초록
This paper describes a real time algorithm for blood flow estimation of LDF(laser Doppler flowmeter). Many algorithms for blood flow estimation are using power spectral density of Doppler signal by blood flow. In these research, the fast Fourier transformation is used to estimate power spectral density. This is a block processing procedure rather than real time processing. The algorithm in this paper used parametric spectral estimation. This has real time capability by estimation of AR(autoregressive) parameters sample by sample, and has smoothing power spectrum. Also, the frequency resolution is not limited by number of samples used to estimate AR parameter. Another advantage of this algorithm is that AR model enhance SNR.
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