Study of Common Frequency Jamming Resistance for Airborne Radar Based on Polarization Information

Aiming at the problem of common-frequency jamming between airborne radars of same model, oblique projection polarization filtering technique was introduced into common frequency jamming countermeasure. The basic principle of oblique projection polarization filtering was analyzed; the anti-interference system’s construction scheme and implementation steps for airborne radar were presented. Oblique projection polarization filtering method does not need signal and interference with orthogonal polarization, as long as they are difference, this method can completely suppress common frequency interference, and keep the signal amplitude and phase property, so it has extensive engineering application prospects. Computer simulation all proves the conclusion. Keywords-common frequency jamming; polarization filtering; two-axis tracking; anti-jamming; formation flight