1. A method comprising changing one or more shading coefficients in an adaptive beamformer in response to one or more radar sensor devices becoming non-operational; wherein the one or more radar sensor devices are part of an array of a plurality of radar sensor devices; wherein after the one or more radar sensor devices becomes non-operational, the array is comprised of one or more non-operational radar sensor devices and one or more operational radar sensor devices; wherein the array has a gain pattern which includes a sidelobe; and wherein the sidelobe of the gain pattern of the array is maintained below the acceptable level by changing the one or more shading coefficients; and wherein the one or more shading coefficients after being changed are applied to the one or more operational sensors.