A compressed sensing approach for antenna array calibration

[...]a compressive sensing approach is being applied to detect faulty radiators in planar antenna arrays using a reduced set of phaseless far-field measurements, demonstrating that the nonlinear problem can be solved as long as the percentage of faulty elements is low and a smart measurement strategy is used. In a typical measurement setup, Figure 1 shows an APAA calibration system with each antenna element connected to a digital phase shifter controller. Because of the phase shifter's amplitude and phase inaccuracies, higher order Fourier series are usually used to quantify array power responses. [...]this research focus on an adequate and efficient algorithm applying reconstruction of 2D signals analysis shown in the (1) to (3) on the missing samples. [...]the level of noise can be estimated, and the position of actual signal components above the noise can be detected, and the impacted elements can then be calibrated to the original signal.