Application of Frequency Diverse Arrays to Synthetic Aperture Radar Imaging

Abstract

Cross-range resolution in spotlight synthetic aperture radar (SAR) is primarily a function of the angular extent (DeltaPhi) over which data is collected. One proposed means for improving cross-range resolution for a given DeltaPhi is the use of frequency diverse array (FDA) techniques. The goal is to exploit an apparent increase in DeltaPhi to improve cross-range resolution while retaining benefits of shorter synthetic apertures and integration times.