Conclusions
A simple preprocessing algorithm of SAR data has been suggested. As the first step the information about the location of important non-dispersive scatterers predicted by the Physical Optics approximation is extracted and the corresponding SAR image is built. This image in many cases is similar to the “optical” image of the target and can be useful in target identification and training of human operators. As the next step more information can be extracted from more accurate approximations of the real target response, such as the GTD approximation, FDTD or other numerical simulation. This additional information describes a shape of a specific scatterer predicted by PO. Extraction of the magnitude of the scatterers and their dispersive properties by conventional spectral estimation techniques can be simplified if time localization is used. The resonant behaviour of the target response can also be ignored which results in more clean and recognizable SAR images.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
H.J. Li and S.H. Yang, “Using Range Profiles as Feature Vectors to Identify Aerospace Objects,” IEEE Tran. Antennas and Propagation, vol. 41, No.3, pp 582–588, March, 1993, pp. 261–268.
S. Primak, J. LoVctri, S. Kashyap, “A Comparative Study of UWB Radar Discrimination Schemes in a Noisy Background”, presented on 1997 IEEE-AP International Symposium, Montreal, Canada, July, 1997.
L. C. Porter, and R. Moses, “Attributed Scattering Centers for SAR ATR”, IEEE Transactions on Image Processing, Vol. 6, No. 1, January, 1997, pp. 79–91.
C. Jakowatz, D. Wahl, P. Eichel, D. Ghigha, and P. Thomson, Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach, Kluwer, Boston, 1996.
S. Primak, J. LoVetri, Z. Damjanschitz, and S. Kashyap, “The E-pulse Technique tor Dispersive Scatterers,” in Ultra-wideband, Short Pulse Electromagnetics III, 1996, pp 327–334.
D.C. Munson, and R.L. Visentin, “A Signal processing View of Strip-Mapping Synthetic Aperture Radar”, IEEE Transaction on Acoustics, Speech and Signal Processing, Vol. 37, No. 12, December, 1989, pp. 2131–2147.
N. Bojarski, “A Survey of the Physical Optics Inverse Scattering Identity”, IEEE Transactions on Antennas and Propagation, Vol. AP-30, No. 5, September, 1982, pp. 980–989.
C. Balanis, Advanced Engineering Electromagnetics, John Wiley and Sons, New York, 1989.
E. Rothwell, K.M. Chen, D.P. Nyquist and J.E. Ross, “Time-Domain Imaging of Airborne Targets Using Ultra-Wideband or Short-Pulse Radar,” IEEE Transactions on Antennas and Propagation, Vol. 43, No. 3, March 1995, pp. 327–329.
C. Baum, E. Rothwell, K.-M. Chen, and D. Nyquist, “The Singularity Expansion Method and Its Applications to Target Identification”, Proc. IEEE, Vol. 79, No. 10, October, 1991.
L. L. Sharf, Statistical Signal Processing: Detection, Estimation, and Time Series Analysis, Addison-Wesley, New York, 1991.
D. Mardare, J. LoVetri and R. Siushansian, 3-D EMFDTD User’s Manual, Developed at the Department of Electrical Engineering, Faculty of Engineering Science, The University of Western Ontario, 1996.
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2002 Kluwer Academic Publishers
About this chapter
Cite this chapter
Zhang, B., Primak, S., LoVetri, J., Kashyap, S. (2002). Joint Physical Optics and FDTD Analysis of Microwave Scattering. In: Heyman, E., Mandelbaum, B., Shiloh, J. (eds) Ultra-Wideband Short-Pulse Electromagnetics 4. Springer, Boston, MA. https://doi.org/10.1007/0-306-47093-4_38
Download citation
DOI: https://doi.org/10.1007/0-306-47093-4_38
Publisher Name: Springer, Boston, MA
Print ISBN: 978-0-306-46206-1
Online ISBN: 978-0-306-47093-6
eBook Packages: Springer Book Archive