Then he further put forward the Hilbert-Huang transform
(HHT) combined with Hilbert transform.
The combination of the NA-MEMD and the Hilbert transform is known as the Hilbert-Huang transform
The well-known Hilbert-Huang transform
has fine time-frequency resolution and is free of cross-term interferences, but it essentially relies on the empirical mode decomposition (EMD) using spline interpolation .
proposed a new method of time-frequency analysis using the Hilbert-Huang transform
This method is compared with Support Vector Machine (SVM)  and k-nearest neighbors (KNN) , Hilbert-Huang Transform
(HHT) , and Mel frequency cepstral coefficients (MFCC)  methods.
The Hilbert-Huang Transform
(HHT) technique is used to analyze the beams' modal response.
After a temporal analysis of the SPEI based on the Hilbert-Huang Transform
(HHT) and Mann-Kendall (MK) trend test, the meteorological drought probability was analysed under three different precipitation conditions (precipitation equal to, greater than, or less than a threshold).
On the whole, two approaches have been used for analyzing data of nonstationary features: wavelet transform [4, 5] and Hilbert-Huang transform
Bergman, "Toward a fundamental understanding of the Hilbert-HUAng transform
in nonlinear structural dynamics," Journal of Vibration and Control, vol.
proposed Hilbert-Huang transform
(HHT) method, which is a new, self-adaptive frequency analysis method , and included the empirical mode decomposition (EMD) and Hilbert transform (HT); the core is the EMD.
Short-time Fourier transform (STFT) [13, 14], Hilbert-Huang transform
(HHT) [15,16], and discrete wavelet transform (DWT) [17-19] are the most commonly used techniques for spectrum calculating.
Zhong, "Specific emitter identification via hilbert-huang transform
in single-hop and relaying scenarios," IEEE Transactions on Information Forensics and Security, vol.