Correction Analysis of Frequency Diverse Array Radar About Time.

Owing to the property of range–angle-dependent beampattern, frequency diverse array (FDA) has promising application potentials in radar field. Many studies have been reported to solve the time-variant problem of FDA. However, there is a misconception between the time index within pulse and the actual time, which misleads the theoretical analysis for FDA. In this article, a novel understanding perspective is proposed to better distinguish the two kinds of time. The exact time–range and frequency–phase relationships are presented. In the sequel, the correction analysis about the operation theories of FDA considering the factor of time is presented along with the accurate understanding about the range–angle beampattern. Furthermore, based on the multiple input multiple output (MIMO) scheme with multiple matched filters at receiver, the prerequisite for exploring the range-dependent property of FDA is demonstrated. Simulations demonstrate the validity of theoretical results. [ABSTRACT FROM AUTHOR]