This paper proposes the wrapped staring spotlight#R##N#(WSS) SAR imaging mode, which is a new method to extend#R##N#the azimuth steering capability for phased array SAR to achieve#R##N#either an improved azimuth geometric or radiometric resolution.#R##N#It investigates the utility of steering directions with main lobe gains#R##N#that are smaller than that of the grating lobes and exposes how#R##N#these directions can be exploited. Furthermore, two methods are#R##N#proposed to reduce the speckle and the image noise at once, i.e.,#R##N#the Look-Normalized Pattern Correction and the Ω-weighting.#R##N#Based on two example TerraSAR-X WSS acquisitions, the image#R##N#performance of extended and point targets is discussed.
['Josef Mittermayer', 'Thomas Kraus', 'Paco Lopez-Dekker', 'Pau Prats-Iraola', 'Gerhard Krieger', 'Alberto Moreira']
Wrapped Staring Spotlight SAR