基于APP应用的超声多普勒频移信号自相关分析与实现

Autocorrelation Analysis and Realization of Doppler Ultrasound Frequency Shift Signal based on APP Application

本文介绍了一种用于手机APP软件分析胎心多普勒频移信号自相关分析方法。该方法在实际应用中,通过手机对胎心多普勒频移信号进行采样后,通过数字滤波、检波及自相关算法分析,准确的计算出胎儿心率。方法的主要特点在于算法简单可靠,占用较少资源,运行顺畅,具有很好的实用价值。

This paper introduces an autocorrelation analysis method for analyzing fetal heart Doppler frequency shift signals with mobile phone APP software. In the practical application, after sampling fetal heart Doppler frequency shift signals by mobile phone, the method accurately calculate fetus heart rate with the digital filtering, demodulation and autocorrelation algorithm analysis. The main features of this method are that the algorithm is simple and reliable and occupies little resources with operating smoothly, which has commendable practical value.