Fast implementation of a maximum likelihood algorithm for...

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

Reexamination Certificate

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Reexamination Certificate

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07969345

ABSTRACT:
A system and method for implementing a maximum likelihood estimator for making a joint estimation of range, range rate, and acceleration of a target utilizing a pulse doppler radar. The MLE of target motion parameters are determined by keystone processing a baseband signal, and generating a first estimate of the motion parameters based on the processed signal. The first estimate is utilized to set up sampling intervals for the performance of a coarse search. Then a fine search is performed using Newton's method to determine the MLE.

REFERENCES:
patent: 7397418 (2008-07-01), Doerry et al.
patent: 7626536 (2009-12-01), Rihaczek et al.
patent: 2005/0280571 (2005-12-01), Abatzoglou et al.
P. Bello, “Joint Estimation of Delay, Doppler, and Doppler Rate”,IRE Transactions on Information Theory, IT-6, 3 (Jun. 1960), pp. 330-341.
E.J. Kelley, “The Radar Measurement of Range, Velocity and Acceleration”,IRE Transactions on Military Electronics, MIL-5 (Apr. 1961), pp. 51-57.
T.J. Abatzoglou, “A Fast Maximum Likelihood Algorithm for Frequency Estimation of a Sinusoid Based on Newton's Method”,IEEE Transactions on Acoustics, Speech, and Signal Processing, vol. ASSP-33, No. 1, Feb. 1985, pp. 77-89.
T.J. Abatzoglou, “Fast Maximum Likelihood Joint Estimation of Frequency and Frequency Rate”,IEEE Transactions Aerospace and Electronic Systems, vol. AES-22, No. 6, Nov. 1986, pp. 1409-1412.
T.J. Abatzoglou et al., “Range, Radial Velocity, and Acceleration MLE Using Radar LFM Pulse Train”,IEEE Transactions Aerospace and Electronic Systems, vol. AES-34, No. 4, Oct. 1998, pp. 1070-1084.
J. Aldrich, “R.A. Fisher and the Making of Maximum Likelihood 1912-1922”,Statistical Science, vol. 12 No. 3, pp. 162-176.
T. Sauer and A. Schroth, “Robust Range Alignment Algorithm via Hough Transform in an ISAR Imaging System”,IEEE Transactions Aerospace and Electronic Systems, 31 (1995), pp. 1173-1177.
R.C. DiPietro, R.L. Fante, and R.P. Perry, “Space-Based Bistatic GMTI Using Low Resolution SAR”, Aerospace Conference, 1997, Proceedings.,IEEEvol. 2, Feb. 1-8, 1997 pp. 181-193.
R.P. Perry, R.C. DiPietro, and R.L. Fante, “SAR Imaging of Moving Targets”,IEEE Transactions on Aerospace and Electronic Systems, vol. AES-35, No. 1 Jan. 1999, pp. 188-200.

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