Cognitive Frequency Offset Calculation for Frequency Diverse Array Radar

Frequency diverse array (FDA) radars have the ability to generate a beam pattern that is a function of range angle and time. The wavy beam pattern can be controlled by using a suitable frequency increment applied at the input of the array elements. Instead of using fixed frequency increment for FDA, we propose a cognitive frequency offset calculation method that supports to beam steer the target position (direction and range), adaptively. The receiver estimates the position of the target and tunnels the predicted position to the transmitter. Based on the feedback from the receiver, the proposed transmitter calculates the new frequency increment at each cycle. Monte-Carlo based simulation results validate the performance of the proposed method.