Regular Uniform Arrays
Let us define a uniform array as an array with unity
amplitude weights for all elements (An = 1 for all n). For
the case in which a uniform array is scanned to direction 
, the array factor
(eq.
2) becomes
|
|
|
(6) |
For a "regular" uniform array with element spacing defined by lattice vectors u and v, the element position vectors rn may be written in the doubly indexed form
|
|
|
(7) |
with m
= 1, 2, ..., Nu and n = 1, 2, ...., Nv. The total number of elements
in the array is given by
N = NuNv.
The array factor (eq. 6) for the NuxNv array becomes
|
|
|
(8) |