Passive listening pulse adaptive sidelobe canceller

摘要

The present invention relates to methods and systems for electronic countermeasures, and particularly to methods and systems for electronic countermeasures that employ radar jamming devices.

主权项

1. A method for filtering out or cancelling at least one jamming signal sourced from a jammer aligned with or directed to a radar's sidelobes, the method comprising the steps of:
calculating at least one adaptive sidelobe canceller weight on a coherent processing interval (“CPI”) basis during at least one receive only or passive listening pulse at the radar's sidelobes, wherein the step of calculating the at least one adaptive sidelobe canceller weight is performed by a field programmable gate array and includes the step of performing a 3×3 matrix inversion and applying said at least one adaptive sidelobe canceller weight to subsequent active pulses of the same CPI at the radar's sidelobes to filter out or cancel said jamming signal.