Minimum

Questions about minimum detectable RF signal level

Questions about minimum detectable RF signal level
  1. What is the minimum signal voltage that can be reliably detected?
  2. What is minimum detectable signal in radar?

What is the minimum signal voltage that can be reliably detected?

For voice signals the required SNR might be as low as 6 dB and for CW (Morse) it might extend, with a trained listener, down to 1 dB difference (tangential sensitivity). Usable in this context then means it conveys adequate information for decoding by a person or a machine with acceptable and defined levels of error.

What is minimum detectable signal in radar?

The Minimum detectable signal (MDS) is the minimum power level that can be processed by a receiver to provide a relevant output. It is also known as the noise floor of the system. It can also be defined as the input signal power required to give a particular SNR at the output.

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