Wideband interference cancellation using DSP algorithms

Details Wideband interference cancellation using DSP algorithms Wideband interference cancellation using DSP algorithms

2008-04-22

2008-04-22

Sotomayor, John B (Department: 3662)

Communications: directive radio wave systems and devices (e.g.,

Radar ew

C342S159000, C342S162000, C342S195000

Reexamination Certificate

active

11318071

ABSTRACT:
A method and system is provided for detecting and characterizing pulsed threat radar emitters through heavy in-band interference. System includes an advanced digital signal processing method provides spatial and temporal interference cancellation, super-resolution direction-finding, and high resolution spectrum analysis techniques. The system receives the digitized output of a discriminator bank and produces highly accurate threat pulse radio frequency estimates. The invention further provides a two-channel configuration for a DF subsystem, to perform adjacent-beam direction-finding through severe interference environments. The invention provides increased sensitivity, increased frequency accuracy, and up to 40 dB of increased interference look-through capability in ES system but remains transparent to ES system functioning and to ES system operators.

REFERENCES:
patent: 5394322 (1995-02-01), Hansen
patent: 5757845 (1998-05-01), Fukawa et al.
patent: 7079480 (2006-07-01), Agee
patent: 7110349 (2006-09-01), Branlund et al.
patent: 7242961 (2007-07-01), Hansen

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