The ratio, usually expressed in dB , of the power of a jamming signal to that of a desired signal at a given point such as the antenna terminals of a receiver.
JAMMING TO SIGNAL RATIO (J/S)
Meaning of JAMMING TO SIGNAL RATIO (J/S) in English
Telecommunication standard terms English vocab. Английский словарь стандартных телекоммуникационных терминов. 2012