Wideband interference cancellation using DSP algorithms
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United States of America Patent
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Apr 22, 2008
Grant Date -
Dec 27, 2007
app pub date -
Dec 23, 2005
filing date -
Dec 23, 2004
priority date (Note) -
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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.
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