A Simple Method for Equivalent Transmit Beamforming using the Frequency Diverse Array

This paper presents a simple method for performing equivalent transmit beamforming at the receiver side of a frequency diverse array. Frequency increments are selected according to a pseudorandom sequence, and a minimum variance beamformer is used to solve for the optimal array weights that are applied at the receiver. Simulation results verify the ability of the proposed method to place peaks and nulls in the beampattern at specified spatial locations.