An opportunity Air-to-Air Inverse SAR imaging experiment: Autofocus and Image Synthesis issues

Konferenz: EUSAR 2010 - 8th European Conference on Synthetic Aperture Radar
07.06.2010 - 10.06.2010 in Aachen, Germany

Tagungsband: EUSAR 2010

Seiten: 4Sprache: EnglischTyp: PDF

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Cantalloube, Hubert M. J. (Office National d’Études et Recherches Aérospatiales, Chemin de la Hunière, 91120 Palaiseau, France)
Nahum, Carole E. (Direction Générale de l’Armement, 5 rue des Mathurins, 92221 Bagneux, France)

During the last RAMSES bistatic campaign with RAMSES transmitting at X band for a passive receiving radar on a Stemme touring motor-glider, the receiving aircraft have been twice imaged in flight with 40 cm resolution. This successful imaging required advances in both image synthesis algorithm (apparent transmitter trajectory in the target frame is extremely uneven due to target attitude fluctuation) and autofocus algorithm (for retrieving both trajectory and attitude estimation errors).