Antenna Array Calibration Using Known Sources(1) : Direct Derivation Method of Calibration Parameters by Simultaneous Equation

Abstract

Recently, electromagnetic waves are widely used for various applications, especially for mobile communications, and superresolution techniques like a MUSIC method have become indispensable method for high resolution Direction-of-Arrival(DOA)estimation with an antenna array. However, arrays oftne have gain, phase, and mutual coupling errors that makes array manifold errorsin MUSIC estimation. They deteriorate estimation accuracy of the MUSIC. In this report, we propose on antenna array calibration method for superresolution array(SRA)using known sources. Also, we show experimental results of a circular array, and show that the proposed method is effective for SRA calibration.