Uniformly spaced definition
Uniformly spaced means there is a space equal to two letter “M”s
Uniformly spaced means that the neighbouring sensors are equi-distant from each other, with distance defined on the surface of the sphere. This is the uniform sampling used in Refs. 5, 11–13, 24, 25, 27, 30, 34, 39–41, 49, and 57, and also in the present work.