Adding SNR from multiple detectors

  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. 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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