现有的水声环境对吊声探测的影响研究难以形成有效的装备使用结论。根据被动声纳方程和潜艇噪声模型建立潜艇噪声信号余量的计算方法，通过其与吊声检测概率的关系，仿真计算吊放声纳被动探测域，并研究该探测域分布规律及其对搜潜策略的影响；在此基础上，结合任务、环境、装备等参数，采用仿真实验的方法研究了吊声搜潜策略问题，最后得出吊放声纳探测点间距应使得相邻吊点探测空间的闭合、正梯度吊放深度应较浅和双吊深组合使用以提高探测效能等结论，对反潜直升机吊放声纳优化使用具有针对性的指导意义。

Traditional research on the influence of acoustics environment on dipping sonar detection can hardly come to an effective conclusion of equipment usage.According to the passive sonar equation and submarine noise model, a method for computing submarine noise signal margin is established.Through its relationship with the dipping sonar detection probability, the passive detection region of dipping sonar is simulated, and the distribution law of this detection region and its influence on the submarine searching strategy are studied.On the basis of which, and in combination with such parameters as tasks, environment and equipment, research on the submarine searching strategy for dipping sonar is conducted by simulation experiment.It is concluded that:to improve the detection efficiency, the distance between the detection points of dipping sonar should make the detection space of adjacent dipping points be closed, the positive gradient dipping depth be shallow, and double-dipping depths should be used in combination.The study is of specific guiding significance in optimum usage of dipping sonar for anti-submarine helicopter.