distorsion du temps de propagation de groupe
- Domaine
-
- astronautique
Terme :
- distorsion du temps de propagation de groupe n. f.
Traductions
-
anglais
Auteur : Taillefer, Yves,Note :
Group delay: time of propagation of the envelope of a wave between 2 points; delay in transmission of information modulated on a carrier, equal to the rate of change, with angular frequency, of the difference in phase between the transmitting and the receiving point. It has significance over the frequency band occupied by the wave only if this rate is approximately constant over that band such that the envelope retains its shape. In general, it is not the same as the phase delay of the carrier itself.
Termes :
- group delay distortion
- envelope delay