DIRECTION OF ARRIVAL CALIBRATION USING ITERATIVE LEARNING CONTROL

Abstract

In this paper, an array calibration method focusing on Direction of Arrival (DOA) onnarrowband signals is presented. An array calibration procedure expresses adaptive beam formingand direction finding, which includes unknown phase and gain perturbation of the active sensor.The main purpose of this study is estimation of DOA on two or more known signal sources usingIterative Learning Control (ILC) method. Due to ILC learning ability, the amount of requiredcalculations decreases. Furthermore, ILC method has a simple structure for working on-line. AsILC is a model-free method, it requires little modeling knowledge, making it suitable for use inDOA. In this paper, a new method is proposed for finding DOA of long distance targets in sonarsystems. Moreover, in the last section the simulation results approves improvement in performanceof the proposed method and helps show the capabilities of the method presented.