  In this paper, a detailed sensitivity analysis of the active manipulation
scheme for scalar Helmholtz fields proposed in our previous works, in both free
space and constant-depth homogeneous ocean environments, is presented. We apply
the method of moments (MoM) together with Tikhonov regularization with Morozov
discrepancy principle to investigate the effects of problem parameters
variations on the accuracy and feasibility of the proposed active field control
strategy. We discuss the feasibility of the active scheme (power budget and
control accuracy) as a function of the frequency, the distance between the
control region and the active source, the mutual distance between the control
regions, and the size of the control region. Process error is considered as
well to investigate the possibility of an accurate active control in the
presence of manufacturing noise. The numerical simulations show the accuracy of
the active field control scheme and indicate some challenges and limitations
for its physical implementations.
