wts = getTaper(h) returns
the tapers, wts, applied to each element of the
phased heterogeneous uniform rectangular array (URA), h.
Tapers are often referred to as weights.
Array element tapers returned as an N-by-1,
complex-valued vector. The dimension N is the number
of elements in the array. The array tapers are returned in the same
order as the element indices. The element indices of a URA run down
each column, then to the top of the next column to the right.