volume | PIER Journals

Abstract

Frequency diverse array (FDA) has gained remarkable attention in both radar and communication applications over the years due to its unique range-dependent beamforming. On the other hand, extremely less attention is paid to the exploitation of FDA in electronic countermeasures (ECM). Hence, this paper proposes a symmetric frequency diverse array via Chebyshev window function in ECM applications. Specifically, we utilize Chebyshev window function to design the coefficient of both transmit weights and frequency diverse increments to uncouple range-angle response of the true target to counteract deceptive ECM signals. In addition, we consider real constraint scenario, i.e., the propagation of the electromagnetic signal arriving at the true target position, which has been usually neglected in the FDA literature. The attribute of the proposed scheme is that it is able to discriminate between true target location and false target(s) location. This implies that the generated false target(s) by the jammer can be significantly suppressed in either angular or range profiles mismatch. Further, we adopt Swerling 1 model to devise generalized Neyman-Pearson design rule to evaluate the probability of detection of the proposed scheme. Numerical results illustrate the achievements of the proposed scheme.

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Dr. Shaddrack Yaw Nusenu

Mr. Abdul Basit

Dr. Emmanuel Asare