Abstract
In this paper, two different kinds of calibration strategies which respectively utilize partly calibrated nested array and a high-power calibrated source are presented. Differ from all existing gain-phase errors calibration techniques, the calibrated process of the proposed two strategies require neither the eigenvalue decomposition (EVD) nor the prior information of noise variance, which is very favorable for underdetermined case. The nested array which can provide 2MN+1 degrees of freedom (DOFs) with only M+N sensors is exploited. After compensating the gain-phase errors, the direction of arrivals (DOAs) are obtained via 1-D multiple signal classification (MUSIC). The effectiveness of the proposed strategies is verified by numerical simulations.
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