matched attenuator - ορισμός. Τι είναι το matched attenuator
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Τι (ποιος) είναι matched attenuator - ορισμός

FORM OF FILTER
Matched Filters; North Filter; Matched Filter

Impact attenuator         
  • A crash cushion installed on a motorway exit in Italy
  • A Truck-Mounted Attenuator (TMA) in [[New Zealand]].
DEVICE INTENDED TO REDUCE THE DAMAGE
Crash attenuator; Fitch Barrier; Fitch Highway Barrier System; Fitch Inertial Systems; Crash cushion; Fitch barrier; Truck-Mounted Attenuator
An impact attenuator, also known as a crash cushion, crash attenuator, or cowboy cushion, is a device intended to reduce the damage to structures, vehicles, and motorists resulting from a motor vehicle collision. Impact attenuators are designed to absorb the colliding vehicle's kinetic energy.
attenuator         
WIKIMEDIA DISAMBIGUATION PAGE
Attenuator (disambiguation)
¦ noun a device which reduces the strength of a radio or audio signal.
matched         
WIKIMEDIA DISAMBIGUATION PAGE
Matched (disambiguation)
1.
If you say that two people are well matched, you mean that they have qualities that will enable them to have a good relationship.
My parents were not very well matched...
ADJ: adv ADJ
2.
In sports and other competitions, if the two opponents or teams are well matched, they are both of the same standard in strength or ability.
Two well-matched sides conjured up an entertaining game...
ADJ: adv ADJ

Βικιπαίδεια

Matched filter

In signal processing, a matched filter is obtained by correlating a known delayed signal, or template, with an unknown signal to detect the presence of the template in the unknown signal. This is equivalent to convolving the unknown signal with a conjugated time-reversed version of the template. The matched filter is the optimal linear filter for maximizing the signal-to-noise ratio (SNR) in the presence of additive stochastic noise.

Matched filters are commonly used in radar, in which a known signal is sent out, and the reflected signal is examined for common elements of the out-going signal. Pulse compression is an example of matched filtering. It is so called because the impulse response is matched to input pulse signals. Two-dimensional matched filters are commonly used in image processing, e.g., to improve the SNR of X-ray observations. Matched filtering is a demodulation technique with LTI (linear time invariant) filters to maximize SNR. It was originally also known as a North filter.