Method and system for detection of broadband energy

Details Method and system for detection of broadband energy Method and system for detection of broadband energy

2006-03-07

2006-03-07

Pihulic, Daniel T. (Department: 3662)

Communications, electrical: acoustic wave systems and devices

Distance or direction finding

By combining or comparing signals

C342S021000

Reexamination Certificate

active

07009912

ABSTRACT:
A system and related method for the detection of low power broadband signal sources in a high noise environment. The system uses multiple collinear arrays of sensors to receive data signals. The sensor-to-sensor spacing within the arrays is greater than one-half the wavelength of the center frequency associated with the broadband spectrum of interest. The signals are processed using nonlinear spectral estimation to remove periodic signals from the data signals to obtain broadband data. A cross correlation matrix is formed from the broadband data. Nonlinear spectral estimation is applied to the cross correlation matrix to determine the angular direction of the low power broadband signal sources with respect to the arrays.

REFERENCES:
patent: 4656642 (1987-04-01), Apostolos et al.
patent: 4716574 (1987-12-01), Baier et al.
J. Munier and G. Delisle, “Spatial Analysis in Passive Listening Using Adaptive Techniques”; Proceeding of the IEEE, vol. 75, No. 11, Nov. 1987, pp. 1458-1471.
S. Kay and S. Marple, Jr., “Spectrum Analysis—A Modern Perspective”; Proceedings of the IEEE, vol. 69, No. 11, Nov. 1981, pp. 1380-1419.

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