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提出了在均匀浅海环境中只知道少量环境参数的情况下,利用不同距离上的两枚引导声源和warping变换的拷贝声场计算方法。这种方法主要基于简正波估计技术,从声场衰减信息和相位信息两个方向来重构拷贝声场,从而与目标声场匹配进行定位。其优点在于能避免传统的匹配场定位技术中拷贝场计算时对环境模型和环境参数的依赖。在简正波估计技术中采用warping变换的处理方式,数值仿真主要采用线性Bartlett匹配处理器分析了目标定位效果,在信噪比高于10~15 dB的情况下,定位效果良好。
This paper proposes a method of calculating the copy sound field using two guided sound sources and warping transformations at different distances under the condition that only a few environmental parameters are known in an even shallow marine environment. This method is mainly based on the simple normal wave estimation technique, which reconstructs the copy sound field from the sound field attenuation information and the phase information to match with the target sound field to locate. The advantage of this method is that it can avoid the dependence on the environment model and environment parameters when calculating the copy field in the traditional matching field location technology. The warping transform is adopted in the technique of simple normal wave estimation. The numerical simulation mainly uses the linear Bartlett matching processor to analyze the target localization effect. With the signal to noise ratio higher than 10 ~ 15 dB, the localization effect is good.