Superresolution beamformer for large order phased array system

Communications: directive radio wave systems and devices (e.g. – Directive – Including a steerable array

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342196, H01Q 322, H01Q 324, H01Q 326

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051172380

ABSTRACT:
Parallel architectures preprocesses large matrices from digital phased array systems, receiving signals from distant sources, to produce lower order matrices, called pseudo coherent apertures, which are computationally less burdensome. The large matrices are processed by frequency shifting, low pass filtering with an FIR filter, and executing front-end decimation to create the pseudo coherent apertures, each corresponding to different sectors of the spatial frequency spectrum. The pseudo coherent apertures are processed using matrix based superresolution spectral estimation algorithms such as the Tufts-Kumaresan (T-K) reduced rank modified covariance algorithm and the Linear Minimum Free Energy algorithms produce an image of the sources.

REFERENCES:
patent: 4112430 (1978-09-01), Ladstatter
R. O. Schmidt, "Multiple Emitter Location and Signal Parameter Estimation", IEEE Trans. Antennas and Propagation, Mar. 1986, vol. AP-34, pp. 276-280.
R. Roy, A. Paulraj, and T. Kailath, ESPRIT-"A Subspace Rotation Approach to Estimation of Parameters of Cisoids in Noise", IEEE Trans. on ASSP, Oct. 1986, vol. 34, pp. 1340-1342.
S. D. Silverstein and J. M. Pimbley, "Robust Spectral Estimation: Autocorrelation Based Minimum Free Energy Method", Proc. 22nd Asilomar Conference on Signals, Systems and Computers, Nov. 1988.
D. W. Tufts and R. Kumaresan, "Estimation of Frequencies of Multiple Sinusoids: Making Linear Prediction Perform Like Maximum Likelihood", Proc. IEEE, Sep. 1982, vol. 70, pp. 975-989.
S. D. Silverstein, S. M. Carroll and J. M. Pimbley, "Performance Comparisons of the Minimum Free Energy Algorithms with the Reduced Rank Modified Covariance Eigenanlysis Algorithm", Proc. ICASSP, Glascow, Scotland, U.K. May 1989.
R. W. Schafer and L. R. Rabiner, "A Digital Signal Processing Approach to Interpolation", Proc. IEEE, Jun. 1973, vol. 61, pp. 692-702.

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