Exploiting frequency diverse array processing to improve SAR image resolution

• Published in: 2008 IEEE Radar Conference pp. 1 - 5
• Main Authors: Farooq, J., Temple, M.A., Saville, M.A.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01-05-2008
• Subjects: Array signal processing; Azimuth; Frequency diversity; Goniometers; Image resolution; Layout; Linear antenna arrays; Phased arrays; SAR; Space vector pulse width modulation; Synthetic aperture radar
• ISBN: 1424415381; 9781424415380
• ISSN: 1097-5659; 2375-5318
• DOI: 10.1109/RADAR.2008.4721083

Cross-range resolution in spotlight synthetic aperture radar (SAR) is primarily a function of the angular extent (Deltathetas) over which data is collected. In [1], the authors proposed a method for improving cross-range resolution for a given Deltathetas by use of frequency diverse array (FDA) techniques. The goal was to exploit an apparent increase in Deltathetas to improve cross-range resolution while retaining benefits of shorter synthetic apertures and integration times using a linear FDA. This paper extends those efforts and introduces the application of FDA techniques to improve range resolution.