Signal-to-noise ratio — For signal to noise ratio in statistics, see Cohen s d. Signal to noise ratio (often abbreviated SNR or S/N) is a measure used in science and engineering that compares the level of a desired signal to the level of background noise. It is defined… … Wikipedia
Signal to noise ratio (image processing) — The Signal to Noise Ratio (SNR) is used in image processing as a physical measure of the sensitivity of an imaging system. Industry standards measure SNR in decibels (dB) and therefore apply the 20 log rule to the pure SNR ratio. In turn,… … Wikipedia
Signal-to-noise statistic — In mathematics the signal to noise statistic distance between two vectors a and b with mean values mu a and mu b and standard deviation sigma a and sigma b respectively is::D {sn} = {(mu a mu b) over (sigma a + sigma b)}This distance is… … Wikipedia
deviation indicator — An indicator that indicates the direction toward which the aircraft is required to be flown to maintain the required radial. It contains two lines one horizontal and the other vertical and the point of intersection of these lines represents the… … Aviation dictionary
Sampling (signal processing) — Signal sampling representation. The continuous signal is represented with a green color whereas the discrete samples are in blue. In signal processing, sampling is the reduction of a continuous signal to a discrete signal. A common example is the … Wikipedia
Course Deviation Indicator — (CDI) is an avionics instrument used in aircraft navigation to determine an aircraft s lateral position in relation to a track. If the location of the aircraft is to the left of course, the needle deflects to the right, and vice versa. Contents 1 … Wikipedia
Root-mean-square deviation — For the application of root mean square deviation to bioinformatics, see Root mean square deviation (bioinformatics). The root mean square deviation (RMSD) or root mean square error (RMSE) is a frequently used measure of the differences between… … Wikipedia
Root mean square deviation — The root mean square deviation (RMSD) ( also root mean square error (RMSE) ) is a frequently used measure of the differences between values predicted by a model or an estimator and the values actually observed from the thing being modeled or… … Wikipedia
MESURE - Mesures électriques et électroniques — Les mesures électriques et électroniques, grâce à l’apport des semiconducteurs, des méthodes numériques et des systèmes asservis, apparaissent à l’heure actuelle comme une technique clé dans le domaine des mesures en général. L’existence de… … Encyclopédie Universelle
VHF omnidirectional range — This article is about the radio navigation aid. For other uses, see Vor. D VOR (Doppler VOR) ground station, co located with DME … Wikipedia
Coefficient of variation — In probability theory and statistics, the coefficient of variation (CV) is a normalized measure of dispersion of a probability distribution. It is also known as unitized risk or the variation coefficient. The absolute value of the CV is sometimes … Wikipedia