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In order to improve the precision guidance capability of the anti-ship missile radar terminal guidance system in the complex naval battlefield environment, the development status of anti-jamming technology of foreign advanced radar systems is analyzed; an adaptive matched filter algorithm is proposed by studying the characteristics of sea clutter ; the mechanism of active suppression interference is analyzed, frequency agility technology and tracking noise technology were proposed; chaff dilution interference and centroid interference styles are studied to propose high doppler resolution countermeasure method and dual-angle wave gate countermeasure method; by analyzing the shipboard deception jamming, the repetition frequency and carrier frequency, double wave gate tracking countermeasure method are proposed;a method of airspace anti-jamming was proposed by studying outboard active jamming; theoretical analysis shows that the above method can effectively combat sea clutter, active suppression jamming, chaff jamming, ship-borne deception jamming and outboard jamming.