Build array

Visualization of Array Reponse

build_array ia a graphical interface for simple visualization of the array response function for a specific array geometry. The array reponse function is computed on a regular cartesian grid in the wavenumber domain $(k_{x},k_{y})$ by computing:

$AR({\vec {k}}-{\vec {k}}_{0})=\|{\frac {1}{N}}\sum _{i=1}^{N}\exp(-j{\vec {r}}_{i}({\vec {k}}-{\vec {k}}_{0}))\|$

though the computation of the array reponse function is simple in principle, there exists the particular problem of being computationally efficient on one hand, i.e. small number of grid points, and not to miss small details of the peaked surface on the other hand, i.e. sufficiently high wavenumber resolution $(\delta k_{x},\delta k_{y})$.