The study was experimented by measuring the changes of GPR A-scan waveforms over a period of 90 days, and processed the waveforms with short-time Fourier transform (STFT) in joint time-frequency analysis (JTFA) domain rather than a conventional time or frequency domain alone.
Can I ask for joint time in future cycles?
Time-frequency (TF) analysis [1, 2] has been widely used over the past decades to characterize the nonstationary content of signals in the joint time and frequency domain.
This gives the space in the joint time to return to its normal size and for more gases to dissolve in the fluid, ready to form bubbles which can then pop all over again. .
In most cases, signal analyses in the joint time-frequency domain outperform the traditional frequency-domain approaches.
Due to their nonstationary and multi-component nature, newborn EEG seizures are better represented in the joint time-frequency domain than in either the time domain or the frequency domain.
In conjunction with the joint frequency center defined in (1), one can find significant differences between the healthy and unhealthy subjects' EMG signature in terms of the joint time duration and joint frequency bandwidth, which is discussed in Section 4.1.
During their joint time in power, the conservative duo of Lech and Jaroslaw Kaczynski challenged the post-1989 order, vowing to purge the residue of Communism from Polish public life.
The novel notion of exerting concurrent control in the joint time-frequency domain is applied to formulate a chaos synchronization scheme that requires no linearization or heuristic trial-and-errors for nonlinear controller design.
A time-frequency distribution (TFD) is used to analyze and process non-stationary signals in the joint time-frequency domain.
Time-frequency signal analysis uses TFDs to represent signals in the joint time-frequency domain and is, therefore, capable of tracking signals' spectral change over time.
