volume | PIER Journals

Abstract

An innovative radar imaging system, based on the capability of a fixed UWB array to radiate short pulses in different directions along time with the principle of electronic beam steering, is presented in this paper. To demonstrate its concept, the analysis presented in this paper is based on simulation results. As function of the use of either only one antenna or several antennas in reception, two radar imaging algorithms have been developed and are detailed in this paper. These algorithms permit to obtain an image of the analyzed scene thanks to the transient beam pattern of the array used in emission. Finally, with a same analyzed scene, these algorithms have been compared with the time reversal method and the back projection algorithm, in association with a SAR imaging system. The conditions of applicability of these methods are also discussed.

1. Immoreev, I. I. and J. D. Taylor, "Optimal short pulse ultra-wideband radar signal detection," Ultra-wideband Short-pulse Electromagnetics 5, 207-214, Smith and Cloude (eds.), Kluwer Academic/Plenium Publishers, 2002.

2. Ressler, M. A., "The army research laboratory ultra wideband BoomSAR," Geoscience and Remote Sensing Symposium, Vol. 3, 1886-1888, 1996.

3. Boutros, J. and G. Barrie, "Ultra-wideband synthetic aperture radar imaging, effect of off-track motion on resolution," Technical Memorandum, Nov. 2003.

4. Barrie, G., "Through-wall synthetic aperture radar (TWSAR) 3D imaging, algorithm design," Technical Memorandum, Nov. 2004.

5. Ahmad, F., M. G. Amin, and S. A. Kassam, "Synthetic aperture beamformer for imaging through a dielectric wall," IEEE Transactions on Aerospace and Electronics Systems, Vol. 41, No. 1, Jan. 2005.

6. Fink, M., C. Prada, D. Cassereau, and E. Kerbrat, "Time reversal techniques in non destructive testing," Europ. Cong. Acoust., 2002.

7. Neyrat, M., C. Guiffaut, and A. Reinex, "Reverse time migration algorithm for detection of buried objects in time domain," Antennas and Propagations Society International Symposium, Jul. 2008.

8. Desrumaux, L., A. Godard, M. Lalande, V. Bertrand, J. Andrieu, and B. Jecko, "An original antenna for transient high power UWB arrays: The Shark antenna," IEEE Transactions on Antennas and Propagation, Vol. 58, No. 8, 2010.
doi:10.1109/TAP.2010.2050418

9. Desrumaux, L., M. Lalande, J. Andrieu, V. Bertrand, B. Jecko, and M. Brishoual, "The Shark antenna: A miniature antenna for transient ultra wide band applications in the frequency band 800 MHz--8 GHz," European Conference on Antennas and Propagation EUCAP 2010, Barcelona, Spain, Apr. 2010.

10. Lalande, M., J. C. Diot, S. Vauchamp, J. Andrieu, V. Bertrand, B. Beillard, B. Vergne, V. Couderc, A. Barthélémy, D. Gontier, and R. Guillerey, "An ultra wideband impulse optoelectronic radar: RUGBI," Progress In Electromagnetics Research B, Vol. 11, 205-222, 2009.
doi:10.2528/PIERB08120306

11. Salo, G. R. and J. S. Gwynne, "UWB antenna characterization and optimization methodologies," Ultra-wideband Short-pulse Electromagnetics 6, 329-336, Mokole, et al. (eds.), Kluwer Academic/Plenium Publishers, 2003.

12. Desrumaux, L., S. Vauchamp, V. Bertrand, V. Couderc, M. Lalande, and J. Andrieu, "Transient measurements of an agile UWB array," European Microwave Week 2010, Paris, Sep. 2010.

13. Hum, S. V., H. L. P. A. Madanayake, and L. T. Bruton, "UWB beamforming using 2-D beam digital filters," IEEE Transactions on Antennas and Propagation, Vol. 57, No. 3, 807-807, Mar. 2009.
doi:10.1109/TAP.2009.2013442

14. Schuler, K. and W. Wiesbeck, "Tapering of multitransmit digital beamforming arrays," IEEE Transactions on Antennas and Propagation, Vol. 56, No. 7, Jul. 2008.

Dr. Laurent Desrumaux

Professor Michele Lalande

Dr. Joel Andrieu

Dr. Valerie Bertrand

Dr. Bernard Jecko