Flat-Top Beampattern Synthesis in Range and Angle Domains for Frequency Diverse Array via Second-Order Cone Programming

This letter proposes a flat-top beampattern synthesis method in range and angle domains for frequency diverse array (FDA) based on second-order cone programming (SOCP). By dividing the array into subarrays and applying each subarray with a distinguishable frequency shift, this approach explores the separated degrees of freedom in range domain and is capable of generating a two-dimensional flat-top beampattern in range and angle domains. Basically, the flat-top beampattern synthesis in range and angle domains is formulated as an SOCP problem that can be exactly and efficiently solved with inner point method. Numerical examples are carried out to demonstrate the effectiveness of the proposed method.