EMD Autonomous underwater vehicles 1 Chan–Taylor hybrid positioning 1 Chan–taylor hybrid positioning 1 Classification algorithms 1 Empirical Mode Decomposition 1 Feature extraction 1 Fetal heart rate 1 Hybrid positioning 1 Hybrid positioning algorithms 1 Image color analysis 1 Image processing 1 Long baseline systems 1 MATLAB 1 ML 1 Ma ximum likelihoods 1 Maximum likelihood estimation 1 Maximum-likelihood 1 Positioning technologies 1 Prediction algorithms 1 Printing CTG paper 1 Reverberation 1 Signal processing algorithms 1 TDOA 1 Time difference of arrival 1 Time-difference-of-arrival 1 Underwater positioning 1 air-quality prediction 1 feature selection 1 filters 1