coarray

English

Etymology

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^[1]:

     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.