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Radar interference will be a critical problem against marine radars in the future when solid-state radars have replaced conventional magnetron radars. Particularly, in an important marine trade route, interferences from hundreds of solid-state radars will overlap so heavily that the conventional interference rejection processing performs inadequately. For countermeasures against such tough interference circumstances, JRC has researched and developed a novel radar manipulating the interference rejection algorithm optimized for the circumstances, as well as suppressing interference with an electronic scanning antenna. The optimized algorithm is the combination of plural interference rejection functions selected in accordance with the database of variation of interference examples. With the novel techniques built in, JRC has developed a knowledge-based interference rejection radar; consequently, through pseudo-interference evaluations

Yukinobu Tokieda
Masayuki Sugano
Yoichi Tomiki
Hiroki Sugawara