TAILIEUCHUNG - Báo cáo sinh học: " Research Article Subinteger Range-Bin Alignment Method for ISAR Imaging of Noncooperative Targets"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí sinh học Journal of Biology đề tài: Research Article Subinteger Range-Bin Alignment Method for ISAR Imaging of Noncooperative Targets | Hindawi Publishing Corporation EURASIP Journal on Advances in Signal Processing Volume 2010 Article ID 438615 16 pages doi 2010 438615 Research Article Subinteger Range-Bin Alignment Method for ISAR Imaging of Noncooperative Targets J. M. Munoz-Ferreras1 and F. Perez-Martinez2 department of Signal Theory and Communications Polytechnic School University of Alcala Campus Universitario Ctra. Madrid-Barcelona Km. 33 600 Alcala de Henares 28805 Madrid Spain 2 Department of Signals Systems and Radiocommunications Technical University of Madrid . Telecomunicación Avenida Complutense s n 28040 Madrid Spain Correspondence should be addressed to J. M. Munoz-Ferreras Received 17 November 2009 Accepted 25 March 2010 Academic Editor Robert W. Ives Copyright 2010 J. M. Munoz-Ferreras and F. Perez-Martinez. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Inverse Synthetic Aperture Radar ISAR is a coherent radar technique capable of generating images of noncooperative targets. ISAR may have better performance in adverse meteorological conditions than traditional imaging sensors. Unfortunately ISAR images are usually blurred because of the relative motion between radar and target. To improve the quality of ISAR products motion compensation is necessary. In this context range-bin alignment is the first step for translational motion compensation. In this paper we propose a subinteger range-bin alignment method based on envelope correlation and reference profiles. The technique which makes use of a carefully designed optimization stage is robust against noise clutter target scintillation and error accumulation. It provides us with very fine translational motion compensation. Comparisons with state-of-the-art rangebin alignment methods are included and advantages of the proposal are highlighted.

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