The ray approach is adopted to study the acoustic field in theory, and the ultrasonic experiment has been carried out in laboratory to model the underwater waveguide.
理论上采用射线近似方法分析了时间反转声场特性，实验上在实验室内开展了水下波导的超声模拟实验。
This paper presents the theory of passive localization for underwater sources based on Acoustic Ray channel modelling.
本文论述以声线理论信道模型为基础的水声被动定位原理。
Here the measurement errors due to acoustic focusing of typical sound sources are analyzed by detailed examples based on the method of image sources in the Ray Theory.
基于射线声学的虚源法，通过具体算例，分析了典型声源声聚焦引起的测量误差。
Results of acoustic field prognosis on wave theory, normal model and ray model are compared, and the approximate degree of the later two models is given.
本文对比了波动理论、简正波声场和射线模型的声场预报结果，给出了后二种方法的近似程度。
Results of acoustic field prognosis on wave theory, normal model and ray model are compared, and the approximate degree of the later two models is given.
本文对比了波动理论、简正波声场和射线模型的声场预报结果，给出了后二种方法的近似程度。
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