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Adding SNR from multiple detectors

  1. Jun 16, 2014 #1
    I am looking at the same object with two detectors. The SNR on each is 2, which is a low probability of detect given a single sensor. However, if I fuse the two what would be the SNR then? Would it be additive (SNR=4) or rss (SNR=2×sqrt(2)) or something more complicated?
  2. jcsd
  3. Jun 17, 2014 #2


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    Gold Member

    Correlated signals add, uncorrelated signals are sqrt(sum of squares).

    If the noise is uncorrelated between the detectors, and the signal is correlated, you will improve the SNR
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