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Journal of Electrical and Computer Engineering
Volume 2013, Article ID 857530, 9 pages
http://dx.doi.org/10.1155/2013/857530
Research Article

Multimode/Multifrequency Low Frequency Airborne Radar Design

1Dipartimento di Ingegneria Informatica, Modellistica, Elettronica e Sistemistica, Università della Calabria, 87036 Rende, Italy
2Consortium of Research on Advanced Remote Sensing Systems (CO.RI.S.T.A.), 80125 Napoli, Italy
3Italian Space Agency (ASI), Rome, Italy

Received 29 May 2013; Revised 16 September 2013; Accepted 17 September 2013

Academic Editor: Marcelo Sampaio de Alencar

Copyright © 2013 Sandra Costanzo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

This work deals with the design of multimode/multifrequency airborne radar suitable for imaging and subsurface sounding. The system operates at relatively low frequencies in the band ranging from VHF to UHF. It is able to work in two different modalities: (i) nadir-looking sounder in the VHF band (163 MHz) and (ii) side-looking imager (SAR) in the UHF band with two channels at 450 MHz and 860 MHz. The radar has been completely designed by CO.Ri.S.T.A. for what concerns the RF and the electronic aspect, and by the University of Calabria for what concerns the design, realization, and test of SAR antennas. The radar has been installed on a civil helicopter and its operation has been validated in flight in both sounder and imager modality. Preliminary surveys have been carried out over different areas of Campania region, South Italy.