Thermal Noise

Some articles on noise, thermal noise, thermal:

Underwater Acoustics - Measurements - Ambient Noise
... threshold, determined partly by the signal processing used and partly by the level of background noise ... Ambient noise is that part of the received noise that is independent of the source, receiver and platform characteristics ... This it excludes reverberation and towing noise for example ...
Functional Magnetic Resonance Imaging - Analyzing The Data - Sources of Noise
... Noise is unwanted changes to the MR signal from elements not of interest to the study ... The five main sources of noise in fMRI are thermal noise, system noise, physiological noise, random neural activity and differences in both mental strategies and ... Thermal noise multiplies in line with the static field strength, but physiological noise multiplies as the square of the field strength ...
Desensitization (telecommunications)
... receiver operation is such that the Minimum Detectable Signal (MDS) level is determined by the thermal noise of its electronic components ... When these spurious signals have a power level that is less than the thermal noise power level, then the receiver is operating normally ... a power level that is higher than the thermal noise floor, then the receiver is desensitized ...
Noise Temperature - Application To Communication Systems
... a channel consists of, the transmitted signal will be attenuated and corrupted with additive noise ... The additive noise in a receiving system can be of thermal origin (thermal noise) or can be from other noise-generating processes ... Most noise processes will have a white spectrum, at least over the bandwidth of interest, identical to that of thermal noise ...
Noise (radio)
... In radio reception, noise is the superposition of white noise (also called "static") and other disturbing influences on the signal, caused either by thermal noise and other electronic noise ... If no noise were picked up with radio signals, even weak transmissions could be received at virtually any distance by making a radio receiver that was sensitive enough ... Thermal noise can be made lower by cooling the circuits, but this is only usually worthwhile on radio telescopes ...

Famous quotes containing the word noise:

    Places where he might live and die and never hear of the United States, which make such a noise in the world,—never hear of America, so called from the name of a European gentleman.
    Henry David Thoreau (1817–1862)