A synthetic aperture radar system capable of detecting...

Details A synthetic aperture radar system capable of detecting... A synthetic aperture radar system capable of detecting...

G - Physics

01

S

G01S 13/90 (2006.01) G01S 13/524 (2006.01)

Patent

CA 2427606

The present invention relates to a Synthetic Aperture Radar (SAR) System capable of detecting moving targets. It comprises a platform which moves over a number of objects, e.g. in the form of a ground surface, and supports radar equipment which reproduces the objects by means of a fast backprojection synthetic aperture technique via at least two antennas without requirement as to directivity or fractional bandwidth. The system comprises a signal- processing device in which the imaging process is divided into three steps which are carried out in a determined order, the steps and the order being formation of sub-aperture beams at one speed, performing clutter suppression, and detection of moving targets.

La présente invention concerne un système radar (SAR) à antenne synthétique capable de détecter des cibles mouvantes. Ce système comprend une plate-forme qui se déplace sur un certain nombre d'objets, par exemple sous la forme d'une surface de sol, et qui supporte un matériel radar, lequel reproduit ces objets au moyen d'une technique d'antenne synthétique à rétroprojection rapide via au moins deux antennes sans exigence quant à la directivité et à la bande fractionnelle. Ce système comprend un dispositif de traitement de signal dans lequel le processus d'imagerie est divisé en trois étapes qui sont effectuées dans un ordre prédéterminé, ces étapes et cet ordre consistant à former des faisceaux de sous-ouverture à une vitesse, à réaliser l'élimination de fouillis et à détecter des cibles mouvantes.

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