Localization of near-field sources with partly calibrated subarray-based array

In array signal processing, the performance of parameter estimation is effected by the unknown nonuniform perturbations on the sensors of receiver array. In this work, the problem of passive localization of near-field sources with partly calibrated subarray-based array is studied. Rank reduction (RARE) is extended to its 2-Dimensional version to solve this problem, and the CRBs on the ranges and bearings of near-field sources for the considered partly calibrated array are given. The simulation show that the 2-D RARE performs well and approaches CRB.