Disproving Sum-Difference Co-Array Property
arXiv:2301.12497
Abstract
The recently published paper by Gupta and Agrawal [1] exploited the sum-difference co-array (SDCA) to enhance the virtual aperture of sparse arrays. We argue that the key SDCA property established in [1] requires a critical necessary and sufficient condition that is valid for a very rare case only.
2 pages, 1 figure