Abstract:

A novel direction-finding method based on harmonic analysis by the time-modulated array (TMA) is proposed.Compared with the complex system and higher cost of conventional direction-finding method,the proposed method requires only two antenna elements and two single-pole single-throw switches.The signal processing of the proposed method is concise and its calculation amount concentrates on the discrete Fourier transform (DFT),which reduces the cost of signal processing.Numerical simulations are provided to examine the performance of the proposed method,showing good accuracy.

Key words: direction finding;discrete Fourier transform;time-modulated array