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Journal of Electrical and Computer Engineering
Volume 2012, Article ID 357034, 8 pages
Research Article

Directional Moving Target Indication: A Novel SAR Ambiguity Function for Traffic Monitoring

1Instituto de Telecomunicações, Instituto Superior Técnico, Torre Norte, Piso 10, Av. Rovisco Pais, 1, 1049-001 Lisboa, Portugal
2Department of Electronics and Telecommunications and Computer Engineering, Instituto Superior de Engenharia de Lisboa, 1959-007 Lisboa, Portugal

Received 11 March 2011; Revised 1 November 2011; Accepted 19 December 2011

Academic Editor: Jiri Jan

Copyright © 2012 Paulo Marques. 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.


This paper presents and evaluates a novel SAR ambiguity function for traffic monitoring. The novelty consists in introducing the capability to discriminate targets moving in a predefined direction of interest, reducing the contribution of traffic moving in undesired directions. Experimental results show that the modified SAR ambiguity function provides better results than the traditional methodology and may, therefore, be useful for civil traffic monitoring using single-channel synthetic aperture radar data.