Fetus electrocardio blind separation method based on relative sparsity of time domain of source signal
A fetal ECG, source signal technology, applied in medical science, sensors, diagnostic recording/measurement, etc., can solve the problem of difficult separation of fetal ECG signal time domain and frequency domain, achieve strong anti-noise ability and simple calculation. Effect
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[0036] The present invention will be further described in detail below in conjunction with the embodiments and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0037] like figure 1 As shown, a method for blind separation of fetal ECG based on the relative sparsity of the source signal time domain includes the following steps:
[0038](1) Collect maternal and fetal mixed ECG signals in two different positions on the body surface of the mother's abdomen;
[0039] (2) Preprocessing the collected two-way mother-fetal mixed ECG signals, the preprocessing includes correcting the baseline drift of the signals, filtering out 50Hz power frequency interference, and filtering out high-frequency myoelectric signal interference;
[0040] (3) Select according to the signal-to-noise ratio in the preprocessed mother-fetal mixed ECG signal, then respectively locate the mother's ECG signal and the fetal ECG signal, and search for a time period ...
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