WitrynaPseudo-coherent radars are a class of radars. They are also sometimes called “coherent-on-receive radars”. In meteorology, they are referred to as Doppler radars. A requirement for any Doppler radar is coherence; that is, some definite phase relationship must exist between the transmitted frequency and the reference frequency, which is … Witryna10 kwi 2007 · The local phases are obtained from local spectra achieved by time-frequency analysis. The coherence is quantified by the phase stack concept [Schimmel and Paulssen, 1997] and serves to attenuate incoherent components in the local spectra. Finally, the filtered traces are obtained after a back transform to the time …
Visual saliency detection in image using ant colony optimisation …
Witryna6 cze 2024 · Therefore, there must be some alternative cell-cell communication mechanisms conferring the local phase coherence, and we believe that it could be mediated by non-synaptic diffusion neurotransmission (NDN) , cell-cell communication mediated by the diffusion of some neurotransmitters (and/or neuroactive substances) … WitrynaAbstract. Ultrafast photoexcitation can induce a nonequilibrium dynamic with electron-lattice interaction, offering an effective way to study photoinduced phase transitions (PIPTs) in solids. The issue that atomic displacements after photoexcitation belong to a coherent change or disordered process has become controversial in the PIPT … swat training fivem
Explicit consistency constraints for STFT spectrograms and their ...
WitrynaA new visual saliency detection approach is proposed. The proposed approach exploits the ant colony optimisation technique to measure the image's saliency via depositing the pheromone (through ants' movements) on the image. Furthermore, the ants' movements are steered by the local phase coherence of the image. Witryna2 lut 2015 · When I run my code for any wave, STFT magnitude spectrum seems to be quite good, but STFT phase spectrum always looks like this: ... obviously interested in the phase change of the frequency bins along the time axis in order to say something about the local phase coherence. Share. Improve this answer. Follow answered Feb … Witryna22 paź 2004 · (a) Phase pattern for a chimera state. Parameters: A = 0.995, β = 0.18, N = 256 oscillators. Equation was integrated using a Runge-Kutta method with fixed time step d t = 0.025 for 200 000 iterations, starting from ϕ (x) = 6 r exp (− 0.76 x 2), where r is a uniform random variable on [− 1 2, 1 2]. (b) Local phase coherence R (x ... s.w.a.t trailer