FDA-MIMO Beampattern Synthesis with Hamming Window Weighted Linear Frequency Increments

Abstract EN

By utilizing a tiny frequency increment across the array elements, frequency diverse array (FDA) generates a beampattern possessing the property of range-angle-dependent.

However, the beampattern of the conventional FDA is “S”-shaped, which means it is coupled in range-angle domains, resulting in low target indication accuracy and poor jamming suppression ability.

In this paper, taking advantage of multiple-input multiple-output (MIMO) technique and multiple matched filters, a new FDA framework using Hamming window weighted linear frequency increments is proposed.

Correct FDA-MIMO framework and multiple matched filters are used to remove the influence of the time parameter.

A range-angle-decoupled beampattern with sharp pencil-shaped mainlobe and low sidelobe levels can be produced.

Comparing with the existing FDA-decoupled transmit beampattern design methods, a more focusing beampattern can be achieved.

Simulation results validate the superiority of the proposed system.