Pattern optimization for line array with faulty elements

In this paper, we present a method to get the optimized beampattern for line array with faulty elements. The faulty element means the sensor that has no output or highly reduced gain than other normal sensors. It is not easy to form the ideal beam in unstable undersea environments. In the case of faulty elements, the average sidelobe level on beampattern is higher. And the faulty elements generate the distorted beampattern. So we propose the method to compensate the distorted beampattern. The proposed method calculates the weights to minimize the squared error between the ideal pattern and the distorted pattern. And the criteria have a constraint about faulty elements. The performance of the proposed method was evaluated via computer simulation under various environments.