Effect of Measurement Error of Cardiotocograph to Spectral Analysis
- 1 January 1988
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 27 (S1)
- https://doi.org/10.7567/jjaps.27s1.131
Abstract
It is reported that the measurement error of the fetal heart rate variability, which is obtained by a cardiotocograph with a Doppler ultrasonics signal, is large even if the auto-correlation technique is used. Simulations are performed to estimate the effect of the measurement error on the spectral analysis. The following two respects are confirmed: (1) when the error is distributed uniformly from -15 msec to +15 msec, the noise level of the spectrum is -12 dB, and (2) the noise level is not greatly different whether the distribution of the measurement error is uniform or Gaussian.Keywords
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