Title :
A radar frontend with time steered array antenna for PAMIR
Author :
Wilden, H. ; Saalmann, O. ; Poppelreuter, B. ; Peters, O. ; Brenner, A.
Author_Institution :
FGAN-FHR, Wachtberg
Abstract :
Two reconfigurable antenna frontend configurations of the PAMIR SAR/GMTI imaging radar, an experimental active phased array system with a very high instantaneous bandwidth of 1.82 GHz in X-band are described: an interferometric and a linear aperture configuration. Broadband beamforming together with wide azimuth scan capabilities (gesplusmn45deg@1.82 GHz bandwidth of the antenna aperture) requires a switchable true time delay network with time increments equivalent to a fraction of a wavelength. The subarray structure including the time delay components are described. PAMIR serves as an ideal airborne platform for future broadband SAR/GMTI research activities including interferometric image formation.
Keywords :
UHF antennas; active antenna arrays; airborne radar; antenna phased arrays; beam steering; radar antennas; radar imaging; synthetic aperture radar; GMTI imaging radar; PAMIR; SAR; active phased array system; airborne platform; bandwidth 1.82 GHz; broadband beamforming; ground moving target indication; interferometric image formation; linear aperture configuration; phased array multifunctional imaging radar; radar frontend; synthetic aperture radar; time delay network; time steered array antenna; Antenna arrays; Aperture antennas; Bandwidth; Broadband antennas; Delay effects; Linear antenna arrays; Phased arrays; Radar antennas; Radar imaging; Synthetic aperture radar;
Conference_Titel :
Radar Conference, 2007. EuRAD 2007. European
Conference_Location :
Munich
Print_ISBN :
978-2-87487-004-0
DOI :
10.1109/EURAD.2007.4404972
