Aiming at zigzag search of surface formation, the principle of method converted straight seartch about search efficiency is analyzed. The submarine's non-escape zone of zigzag search is built and the situation of combat field is analyzed based on the situation of combat field and the conception of straight search. Then,the mathematical model about search efficiency based on relative courses of enemy submarine is established. It is experimentally simulated and analyzed that the new model reflects better the influence of the changes of zigzag angle on search efficiency better and possesses some theory value.%针对舰艇编队曲折机动搜潜样式,分析了等效直航法计算搜索效率的原理,根据直航搜索时潜艇“遭遇区”概念,分析作战态势,建立了曲折搜索时的潜艇“遭遇区”,提出了基于敌潜艇相对航路的搜索效率模型.通过仿真分析可知,该模型较好的反映了曲折机动角变化对搜索效率的影响,具有一定的理论参考价值.
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