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Progress In Electromagnetics Research
ISSN: 1070-4698, E-ISSN: 1559-8985
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BROADBAND SCATTERING DATA INTERPOLATION BASED ON A RELAXED ADAPTIVE FEATURE EXTRACTION ALGORIGHM

By A. M. Raynal, J. T. Moore, and H. Ling

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Abstract:
A method using a relaxed adaptive feature extraction algorithm is investigated to interpolate broadband, high-frequency scattering from sparse, undersampled data. First, the adaptive feature extraction is extended to include a frequency-dependent scattering center model in order to better-describe broadband scattering physics from a complex target per the geometrical theory of diffraction. Second, the parameterization of the model is relaxed for more accurate extractions and a sparser model representation using fewer samples. Comparative results are presented for the relaxed versus the non-relaxed adaptive feature extraction algorithm for hypothetical examples and a numerically-solved ogive body of revolution. The relaxed algorithm is more computationally expensive, but results in significantly improved performance. The technique enhances adaptive feature extraction performance for broadband interpolation.

Citation:
A. M. Raynal, J. T. Moore, and H. Ling, "Broadband Scattering Data Interpolation Based on a Relaxed Adaptive Feature Extraction Algorighm," Progress In Electromagnetics Research, Vol. 64, 99-116, 2006.
doi:10.2528/PIER06052404
http://www.jpier.org/PIER/pier.php?paper=06052404

References:
1. Miller, E. K., "Model-based parameter estimation in electromagnetics: Part I. Background and theoretical development," IEEE Antennas and Propagation Magazine, Vol. 40, No. 1, 42-52, 1998.
doi:10.1109/74.667326

2. Miller, E. K., "Model-based parameter estimation in electromagnetics: Part II. Applications to EM observables," IEEE Antennas and Propagation Magazine, Vol. 40, No. 2, 51-65, 1998.
doi:10.1109/74.683542

3. Miller, E. K., "Model-based parameter estimation in electromagnetics: Part III. Applications to EM integral equations," IEEE Antennas and Propagation Magazine, Vol. 40, No. 3, 49-66, 1998.
doi:10.1109/74.706084

4. Hurst, M. P. and R. Mittra, "Scattering center analysis via Prony's method," IEEE Trans. Antennas Propagat., Vol. 35, No. 8, 986-988, 1987.
doi:10.1109/TAP.1987.1144210

5. Moghaddar, A., Y. Ogawa, and E. K. Walton, "Estimating the time-delay and frequency decay parameter of scattering components using a modified MUSIC algorithm," IEEE Transactions on Antennas and Propagation, Vol. 42, No. 10, 1412-1418, 1994.
doi:10.1109/8.320748

6. Potter, L. C., D. M. Chiang, R. Carriere, and M. J. Gerry, "A GTD-based parametric model for radar scattering," IEEE Transactions on Antennas and Propagation, Vol. 43, No. 10, 1058-1067, 1995.
doi:10.1109/8.467641

7. Li, J., Y. Zhou, and H. Ling, "Sparse parameterisation of electromagnetic scattering data using genetic algorithm with adaptive feeding," Electronics Letters, Vol. 39, No. 15, 2003.
doi:10.1049/el:20030723

8. Moses, R., L. Potter, H. Chiang, M. Koets, and A. Sabharwal, "A parametric attributed scattering center model for SAR automatic target recognition," 1998 Image Understanding Workshop, 20-23, 1998.

9. Wang, Y. and H. Ling, "Efficient radar signature prediction using a frequency-aspect interpolation technique based on adaptive feature extraction," IEEE Transactions on Antennas and Propagation, Vol. 50, No. 2, 122-131, 2002.
doi:10.1109/8.997980

10. Hogbörn, J. A., "Aperture synthesis with a nonregular distribution of interferometric baselines," Astronomyand Astrophysics Supplements, Vol. 15, 417-426, 1974.

11. Mallat, S. G. and Z. Zhang, "Matching pursuits with timefrequency dictionaries," IEEE Transactions on Signal Processing, Vol. 41, No. 12, 3397-3415, 1993.
doi:10.1109/78.258082

12. Li, J. and P. Stoica, "Efficient mixed-spectrum estimation with applications to target feature extraction," IEEE Transactions on Signal Processing, Vol. 44, No. 2, 1996.


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