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RECEIVER SENSITIVITY / NOISE

SENSITIVITY / NOISERECEIVER SENSITIVITYS ensitivity in a RECEIVER is normally taken as the minimum input signal (S) required to produce a specified outputminsignal having a specified signal-to- NOISE (S/N) ratio and is defined as the minimum signal-to- NOISE ratio times the meannoise power, see equation [1]. For a signal impinging on the antenna (system level) SENSITIVITY is known as minimumoperational SENSITIVITY (MOS), see equation [2]. Since MOS includes antenna gain, it may be expressed in dBLi (dBreferenced to a linear isotropic antenna). When specifying the SENSITIVITY of receivers intended to intercept and process pulsesignals, the minimum pulse width at which the specified SENSITIVITY applies must also be stated.

the terms low sensitivity or high sensitivity can be very confusing. The terms S min and MOS avoid confusion. SIGNAL-TO-NOISE (S/N) RATIO The Signal-to-Noise Ratio (S/N) (a .k.a. SNR) in a receiver is the signal power in the receiver divided by the mean noise power of the receiver. All receivers require the signal to exceed the noise by some ...

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