Research on anti-interference of sum-difference cancellation main lobe based on frequency refinement
Currently,most radar anti-jamming efforts are focused on silelobe and has achieved certain results.When facing main lobe barrage jamming,due to the high jammer-to-signal ratio,the echo signal is completely submerged in the jamming,and conventional sedelobe anti-jamming strategies cannot be effective,resulting in radar being unable to detect real targets in the direction of main lobe jamming.The demand for anti main lobe jamming is urgent and the technical difficulty is high,it will reflect the core competitiveness of future radar.This article analyses the feasibility of various main lobe ant-jamming methods in engineering implementation and proposes a method based on sum and difference channel cancellation,which uses sum and difference beams as two channels to cancel input jamming.By optimizing processing algorithms,improving cancellation performance and achieving main lobe anti-jamming ability.
side lobe ant-jammingmain lobe ant-jammingjammer-to-signal ratioecho signal
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