Performance Analysis of Phased Array and Frequency Diverse Array Radar Ambiguity Functions

Abstract

Radar ambiguity function is widely employed to analyze a radar system's time delay (range) resolution, Doppler frequency (range rate) resolution, mainlobe width and sidelobes in both range and Doppler. In this paper, ambiguity functions of frequency diverse array (FDA) which offers range-angle dependent transmit beampattern and Phased array which yields angle transmit beampattern is investigated. The FDA and Phased array radar ambiguity function is derived and evaluate its performance characteristics in terms of time-delay and Doppler frequency resolutions. Performance analysis has also been done in terms of empirical cumulative distribution function (ECDF). Simulation and results have verified the effectiveness of both radar systems by comparing their performance characteristics.

Analysis of multicarrier frequency diverse array radar over time

“…To overcome this disadvantage, the frequency diverse array (FDA) was proposed in Ref. [1,2] and gained substantial attention from researchers due to its flexible beam scanning characteristic [3][4][5][6][7][8][9]. By employing a tiny frequency offset across adjacent array elements, the FDA can provide a time-range-angle-dependent beampattern, which makes it possible to suppress the rangedependent clutter or main-lobe interference through a proper beamforming method [10][11][12][13].…”