spectral density
41spectral radiant density of heat flow rate per unit wavelength interval — spektrinis ilginis paviršinio šiluminės spinduliuotės srauto tankis statusas T sritis Standartizacija ir metrologija apibrėžtis Pasirinktosios spektro dalies vidutinės paviršinio šiluminės spinduliuotės srauto vertės ir atitinkamo bangos ilgio… …
42spectral optical density — spektrinis optinis tankis statusas T sritis fizika atitikmenys: angl. spectral optical density vok. optische Spektraldichte, f rus. оптическая спектральная плотность, f pranc. densité optique spectrale, f …
43Spectral energy distribution — A spectral energy distribution (SED) is a plot of flux, brightness, or flux density versus frequency or wavelength of light. It is used in many branches of astronomy to characterize astronomical sources. For example, in radio astronomy, an SED… …
44Least-squares spectral analysis — (LSSA) is a method of estimating a frequency spectrum, based on a least squares fit of sinusoids to data samples, similar to Fourier analysis. [cite book | title = Variable Stars As Essential Astrophysical Tools | author = Cafer Ibanoglu |… …
45Maximum entropy spectral estimation — The maximum entropy method applied to spectral density estimation. The overall idea is that the maximum entropy rate stochastic process that satisfies the given constant autocorrelation and variance constraints, is a linear Gauss Markov process… …
46Atomic spectral line — In physics, atomic spectral lines are of two types: * An emission line is formed when an electron makes a transition from a particular discrete energy level of an atom, to a lower energy state, emitting a photon of a particular energy and… …
47Current density — This page is about the electric current density in electromagnetism. For the probability current density in quantum mechanics, see Probability current. Current density is a measure of the density of flow of a conserved charge. Usually the charge… …
48noise spectral power density — spektrinis triukšmo galios tankis statusas T sritis radioelektronika atitikmenys: angl. noise spectral power density vok. Spektralleistungsdichte des Rauschens, f rus. спектральная плотность мощности шума, f pranc. densité spectrale de puissance… …
49Colors of noise — White Pink Red (Brownian) Grey While noise is by definition derived from a random signal, it can have different characteristic statistical properties corresponding to different mappings from a source of randomness to the concrete noise. Spectral… …
50White noise — is a random signal (or process) with a flat power spectral density. In other words, the signal contains equal power within a fixed bandwidth at any center frequency. White noise draws its name from white light in which the power spectral density… …
