coarray

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English

Etymology

From co- +‎ array.

Noun

coarray (plural coarrays)

  1. (mathematics) The mapping of an array into a cogroup.
    • 2016, Mianzhi Wang, Arye Nehorai, “Coarrays, MUSIC, and the Cramér Rao Bound”, in arXiv:
      In this paper, we derive a simplified asymptotic mean square error (MSE) expression for the MUSIC algorithm applied to the coarray model, which is applicable even if the source number exceeds the sensor number.
  2. (computing) A variable declared with a codimension.
  3. (signal processing) The set of vector differences between the transmit and receive arrays.