Automatikos terminų žodynas. – Vilnius: Technika. Vilius Antanas Geleževičius, Angelė Kaulakienė, Stanislovas Marcinkevičius. 2004.
Spectral phase interferometry for direct electric-field reconstruction — In ultrafast optics, spectral phase interferometry for direct electric field reconstruction (SPIDER) is an ultrashort pulse measurement technique.The basicsSPIDER is an interferometric ultrashort pulse measurement technique in the frequency… … Wikipedia
amplitude du spectre — spektrinė amplitudė statusas T sritis automatika atitikmenys: angl. spectral amplitude; spectrum amplitude vok. Spektralamplitude, f rus. амплитуда спектра, f pranc. amplitude du spectre, f … Automatikos terminų žodynas
Spectral efficiency — Spectral efficiency, spectrum efficiency or bandwidth efficiency refers to the information rate that can be transmitted over a given bandwidth in a specific communication system. It is a measure of how efficiently a limited frequency spectrum is… … Wikipedia
Spectral leakage — is an effect in the frequency analysis of signals where small amounts of signal energy are observed in frequency components that do not exist in the original waveform. The term leakage refers to the fact that it appears as if some energy has… … Wikipedia
Amplitude-shift keying — (ASK) is a form of modulation that represents digital data as variations in the amplitude of a carrier wave.The amplitude of an analog carrier signal varies in accordance with the bit stream (modulating signal), keeping frequency and phase… … Wikipedia
Spectral density — In statistical signal processing and physics, the spectral density, power spectral density (PSD), or energy spectral density (ESD), is a positive real function of a frequency variable associated with a stationary stochastic process, or a… … Wikipedia
spectrum amplitude — spektrinė amplitudė statusas T sritis automatika atitikmenys: angl. spectral amplitude; spectrum amplitude vok. Spektralamplitude, f rus. амплитуда спектра, f pranc. amplitude du spectre, f … Automatikos terminų žodynas
spektrinė amplitudė — statusas T sritis automatika atitikmenys: angl. spectral amplitude; spectrum amplitude vok. Spektralamplitude, f rus. амплитуда спектра, f pranc. amplitude du spectre, f … Automatikos terminų žodynas
Hilbert spectral analysis — is a signal analysis method applying the Hilbert transform to compute the instantaneous frequency of signals according to :omega=frac{d heta(t)}{dt}.,After performing the Hilbert transform on each signal, we can express the data in the following… … Wikipedia
Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… … Wikipedia
