Congreso: 2006 IEEE International Radar Conference. Verona, NY, USA. 24-27, Abril 2006

Autores: J.M. Muñoz-Ferreras, J. Calvo-Gallego, F. Pérez-Martínez, A. Asensio-López, A. Blanco-del-Campo, B.P. Dorta-Naranjo.

ISAR (inverse synthetic aperture radar) is a coherent technique that obtains images of targets by processing the echoes returned during the dwell time. A higher angular resolution than the antenna beamwidth may be obtained. In this paper we report high resolution ISAR images, which have been obtained from data captured by a millimeter-wave LFMCW (linear frequency modulated continuous wave) radar. The target translational motion compensation is achieved by means of a new parametric algorithm, which makes use of the shift-and-convolution technique. This image autofocusing algorithm is compared with prominent point processing (PPP) and phase gradient autofocus (PGA). Simulated and real data from the millimeter-wave LFMCW radar are used to verify the proposed technique, although the method is also applicable to any kind of coherent radar.