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oai:recercat.cat:2117/232082026-01-30T06:08:24Zcom_2072_1033col_2072_452950

New graphical processing technique for fast shadowing computation in PO surface integral Rius Casals, Juan Manuel Carbó Meseguer, Alexis Bjerkemo, Jakob Úbeda Farré, Eduard Heldring, Alexander Mallorquí Franquet, Jordi Joan Broquetas Ibars, Antoni Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions Universitat Politècnica de Catalunya. ANTENNALAB - Grup d'Antenes i Sistemes Radio Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Antenes i agrupacions d'antenes Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Processament del senyal Microwave antennas Signal theory (Telecommunication) Graphical processing high frequency asymptotic techniques physical optics radar cross section (RCS) Antenes de microones Senyal, Teoria del (Telecomunicació) This paper presents a new graphical processing technique for fast computation of PO surface integral. In contrast with the original graphical processing approach introduced by the authors in 1993, the new one combines a novel shadowing computation algorithm together with the conventional facet-based Gordon's formula, instead of the pixel-based Asvestas' approximation. The resulting hybrid approach needs more CPU power for very complex radar targets, but is free from the pixel discretization noise inherent to graphical processing. It has the same accuracy as conventional Physical Optics computation, but shadowed facets detection is more than 10 times faster than with the most efficient alternative algorithms of O(N log N) computational cost. © 2014 IEEE. Peer Reviewed Postprint (published version) 2014-05-01 Article Rius, J. [et al.]. New graphical processing technique for fast shadowing computation in PO surface integral. "IEEE transactions on antennas and propagation", 01 Maig 2014, vol. 62, núm. 5, p. 2587-2595. 0018-926X https://hdl.handle.net/2117/23208 10.1109/TAP.2014.2307321 eng http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6746012 info:eu-repo/grantAgreement/EC/FP7/263468/EU/New Service Capabilities for Integrated and Advanced Maritime Surveillance/NEREIDS http://creativecommons.org/licenses/by-nc-nd/3.0/es/ Restricted access - publisher's policy Attribution-NonCommercial-NoDerivs 3.0 Spain 9 p. application/pdf