Real-Time Direction of Arrival Estimation Using Space-Time Coding Method

This article presents a method for the real-time estimation of the impinging angle of monochromatic plane wave signal using space-time coding method. The proposed system operates within the Ku band and covers an elevation range of - 60 to 60 degrees. It consists of a space-time modulated array and a receiver antenna positioned in the far-field region in broadside direction. The direction of arrival (DoA) estimation is achieved by comparing the frequency spectrum associated with each incident angle against a pre-established look-up table for various incoming wave angles. A simulation is performed to show how proposed method works.