The amount of reduction for a given envelope, or modulation, frequency has been called the modulation transfer function (MTF) and can be derived from the impulse response of the transmission channel [Schroeder,
The modulation transfer function of an optical system that contains a cascading series of components (microscope, digital video camera, video capture board, computer monitor, etc.) can be calculated by multiplying the individual MTF's of each component. By conducting a careful analysis of the combi...
In the real spatial domain, the spatial response of medium to excitation of a high-contrast line beam,RdLSF(x), is defined as the line spread function (LSF), and specified in the SFD by its one-dimension (1-D) Fourier transformation, referred to as the system transfer function (STF), ...
As one might expect, these units exhibit rectification for very low EOD amplitudes, because the firing rate cannot by definition be negative, and these units also saturate for very high EOD amplitudes. Recent studies have shown that these afferents have broad, flat tuning curves over the range ...
Abstract:Withthedefinitionofthecontrasttransferfunction(CTF>,themodulationtransferfunc-tion(MTF>mathematics-theoryrelationshipofline-arrayfiber-opticsimagebundles,asestablished,theinfluenceofphasematchbet,eeninputsignalandline-arrayfiber-opticimagebundlesonthemod-ulationtransferfunction,ascarriedoutbydigitalanalysis,and...
11.3.26A. The nonuniformity of the RF transfer function can be minimized with careful engineering of RF circuits. Fig. 11.3.26B shows the EVM of all 40 recovered digital subcarrier channels. The average EVM is approximately 11%, with about 5% variation from channel to channel. In addition ...
Figure 1 : MTF measurement for green light, as a function of the F-number of the lens. While changing the F-number, the exposure time setting of the camera is optimized so that a constant output signal is obtained. For every change of one F-stop, the exposure time is adapted by a ...
Following Skudrzyk, Cuschieri [48] developed a power flow method which uses the mean level of the transfer function mobilities. Franco and De Rosa [49–51] proposed a quite interesting scale method called ASMA (Asymptotic Scaled Modal Analysis) that found a complete theoretical definition only ...
In Figure 1, the results of the MTF measurement are shown. Figure 1 : Modulation Transfer Function of a monochrome device for various wavelengths of the incoming light. It is quite nice to see the influence of the wavelength of the incoming light : ...
Define modulation. modulation synonyms, modulation pronunciation, modulation translation, English dictionary definition of modulation. n. 1. The act or process of modulating. 2. The state of being modulated. 3. Music a. A passing or transition from one k