中文摘要：

提出了基于本征声线视在搜索的浅海信道有效声速估计方法。在给定海面海底及垂直声速分布条件下,该方法能快速准确地估计浅海信道中任意两点的有效声速以及有效声速空间分布物理图像。因该方法采用本征声线视在搜索思想,计算量大为减小,易于实际工程应用。随后探讨了其在长基线水声定位解算中的应用。海试与应用结果表明,该方法可以提高长基线定位系统对浅海信道复杂水文的适应能力。

英文摘要：

An accurate estimate algorithm of effective sound velocity in shallow water based on eigenrays pseudo search is proposed.For a given sound speed profile of the sea and the characteristics of surface and seabed,the method acquires effective sound velocity between any two points in the channel and the physical image of their spatial distri-bution.It is easy to use the method for actual project applications because of its minimal calculations by adoption of eigenrays pseudo search model.Furthermore,the application of effective sound velocity in long baseline underwater acoustic positioning solution is investigated.Sea trial and application results indicate that this method can improve the complex hydrological adaptability of long baseline positioning system in shallow channel.