Self-Calibration Algorithm for the Amplitude and Phase Error of the Multiple Beam Antenna

When we use the multiple beam antenna to estimate the direction of arrival (DOA) by using the multiple signal classification (MUSIC) algorithm, the uncertainty element's amplitude and phase will effect the DOA estimation performance of the beam antenna. So a universal technique for self-calibration based on the minimize cost function is introduced. By minimize the cost function it can get the array covariance matrix and compensate the array uncertainty without estimation. Therefore, the proposed method is advantage over the source calibration algorithm that resorts to computing the sample minimize cost function. The performance of the proposed method is demonstrated by using the actual parameter of multiple beam antenna, and the computer simulations show that the proposed method provide comparable performance that can not only self-calibrate its sensitivity to the array uncertainty with reduce complexity compute with resource, but also further increase its precision.