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Passive geosynchronous SAR system reusing backscattered digital audio broadcasting signals

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4 Author(s)
C. Prati ; Dipt. di Elettronica ed Inf., Politecnico di Milano, Italy ; F. Rocca ; D. Giancola ; A. M. Guarnieri

A synthetic aperture radar (SAR) is considered, located on a geosynchronous receiver, and illuminated by the backscattered energy of satellite broadcast digital audio or television signals. The principal application of such a passive system could be differential interferometry, since even low spatial resolution coupled to zero baseline would be useful; however, other imaging applications could be envisaged and even some topographic capabilities if a baseline is created by ellipticizing the receiver's orbit. Spatial resolution, link budget, and possible focusing techniques are evaluated

Published in:

IEEE Transactions on Geoscience and Remote Sensing  (Volume:36 ,  Issue: 6 )