SAR image formation with azimuth interpolation after azimuth...

Communications: directive radio wave systems and devices (e.g. – Synthetic aperture radar

Reexamination Certificate

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C342S02500R, C342S02500R, C342S02500R, C342S196000

Reexamination Certificate

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07397418

ABSTRACT:
Two-dimensional SAR data can be processed into a rectangular grid format by subjecting the SAR data to a Fourier transform operation, and thereafter to a corresponding interpolation operation. Because the interpolation operation follows the Fourier transform operation, the interpolation operation can be simplified, and the effect of interpolation errors can be diminished. This provides for the possibility of both reducing the re-grid processing time, and improving the image quality.

REFERENCES:
patent: 4471357 (1984-09-01), Wu et al.
patent: 4924229 (1990-05-01), Eichel et al.
patent: 5608404 (1997-03-01), Burns et al.
patent: 5861835 (1999-01-01), Hellsten
patent: 5923278 (1999-07-01), Poehler et al.
patent: 6011505 (2000-01-01), Poehler et al.
patent: 6046695 (2000-04-01), Poehler et al.
patent: 6424287 (2002-07-01), Doerry et al.
patent: 6608586 (2003-08-01), Doerry
patent: 6873285 (2005-03-01), Carrara et al.
patent: 7327305 (2008-02-01), Loehner et al.
patent: 7348917 (2008-03-01), Stankwitz et al.
patent: 2007/0188371 (2007-08-01), Callison
patent: 2007/0247461 (2007-10-01), Smith
patent: 2007/0285302 (2007-12-01), Aarseth et al.
patent: 2008/0084551 (2008-04-01), Harnisch
patent: 2000131428 (2000-05-01), None
patent: 2003090880 (2003-03-01), None
“Two-dimensional extrapolation and spectral estimation from arbitrary sampling configurations for SAR/ISAR imaging”, Cabrera, S.D et al. Signals, Systems and Computers. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on vol. 1, Oct. 31-Nov. 2, 1994 pp. 145-150.
“Optimized algorithm for synthetic aperture imaging”, Stepinski, T.; Lingvall, F. Ultrasonics Symposium, 2004 IEEE vol. 1, Aug. 23-27, 2004 pp. 701-704.
“Nonlinear k-space mapping method for SAR Fourier imaging”, Halcrow, G.; Mulgrew, B. Radar, 2006 IEEE Conference on Apr. 24-27, 2006 p. 4 pp.
Brown, W.M., and R.J. Fredericks, “Range-Doppler Imaging with Motion through Resolution Cells,” IEEE Transactions on Aerospace and Electronic Systems, vol. AES-5, No. 1, Jan. 1969, pp. 98-102.
Walker, J.L., “Range-Doppler Imaging of Rotating Objects,” IEEE Transactions on Aerospace and Electronic Systems, vol. AES-16, No. 1, Jan. 1980, pp. 23-52.
D.C. Munson, J.D. O'Brien, and W.K. Jenkins, “A Tomographic Formulation of Spotlight-Mode Synthetic Aperture Radar,” Proc. IEEE, vol. 17, No. 8, pp. 917-925, Aug. 1983.
W. J. Caputi Jr., “Stretch: A Time-Transformation Technique”, IEEE Transactions on Aerospace and Electronic Systems, vol. AES-7, No. 2, pp. 269-278, Mar. 1971.
C. V. Jakowatz Jr., D. E. Wahl, P. H. Eichel, D. C. Ghiglia, P. A. Thompson,Spotlight-Mode Synthetic Aperture Radar: A Signal Processing Approach, ISBN 0-7923-9677-4, Kluwer Academic Publishers, 1996.
Walter G. Carrara, Ron S. Goodman, Ronald M. Majewski,Spotlight Synthetic Aperture Radar, Signal Processing Algorithms, ISBN 0-89006-728-7, Artech House Publishers, 1995.
Armin W. Doerry,Synthetic Aperture Radar Processing with Tiered Subapertures, Ph.D. Dissertation, The University of New Mexico, Albuquerque, New Mexico, May 1995.
Wayne Lawton, “A New Polar Fourier Transform for Computer-Aided Tomography and Spotlight Synthetic Aperture Radar,” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. 36, No. 6, pp. 931-933, Jun. 1988.
B. L. Burns, J. T. Cordaro, “SAR image formation algorithm that compensates for the spatially variant effects of antenna motion”, SPIE Proceedings, vol. 2230, SPIE's International Symposium on Optical Engineering in Aerospace Sensing, Orlando, Apr. 4-8, 1994.
Armin Doerry, “Bandwidth requirements for fine resolution squinted SAR”, SPIE 2000 International Symposium on Aerospace/Defense Sensing, Simulation, and Controls, Radar Sensor Technology V, vol. 4033, Orlando FL, Apr. 27, 2000.

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