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| Perturbation Analysis of Gain and Phase Error Calibration for Uniform Linear Array with Optimal Algorithms |
| Li You-ming①; Wang Rang-ding②; Wen Hua-feng① |
| ①Institute of Communication Technology, Ningbo University, Ningbo 315211, China; ②CKC Institute, Ningbo University, Ningbo 315211, China |
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Abstract The gain and phase error calibration for Linear Equi-spaced Arrays (LEA) is considered in this paper. The analysis of the covariance matrix perturbation along different diagonal lines due to finite snapshot is first considered, and an apparent formula for the variance of the gain and phase perturbations along different diagonal lines is derived. This result reveals that the statistics analyses of the perturbation along different diagonal lines are different. Based on this analytic result, it is found out that the optimal gain and phase error calibration methods are respectively based on main diagonal line and the first upper diagonal line. Computer simulation results verified the analyses.
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Received: 13 December 2005
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2007, Vol. 29 
