基于水下无人潜水器平台的甚低频矢量观测技术

This project firstly studies the characteristics of vertical acoustic intensity field activated by a determined source and random noise in shallow and deep water. Then using perfecting the damping performance of the suspension structure of vector sensors, de-noising the self-noise of UUV (Unmanned Undersea Vehicle) platform, weakening the scattering influence of UUV, a low noise UUV-based monitoring system is implemented for ocean information acquisition. An adaptive cancellation method based on all-phase theory is studied to suspension the UUV self-noise’s influence on VLF (Very Low Frequency) vector sensor and is used to extract and analysis the characteristics of vertical acoustic intensity field for in-situ experiment. This will help in evaluating the feasibility and fidelity of Ocean Acoustic Monitoring Using UUV equipped a VLF vector sensor. This project will lay a good foundation in scientific and practical applications using UUV equipped a VLF vector sensor in the future.

项目在研究浅海/深海信道条件下的信号、噪声的甚低频矢量声场垂直声强空间分布特征的基础上，利用矢量水听器悬挂优化减振、无人潜水器平台降噪和无人潜水器平台声散射影响弱化等技术途径和水池测试分析完善无人潜航器甚低频矢量观测系统设计，实现低噪声无人潜航器平台的海洋声学信息观测；利用基于全相位理论的运动平台干扰自适应抵消与参数测量提取方法和海上试验数据分析验证甚低频矢量声场垂直声强空间分布特征，评估无人潜航器平台甚低频矢量观测系统对海洋声学信息的“保真性”和无人潜水器平台进行甚低频矢量观测的“可行性”，为未来甚低频方面的科学研究和技术应用奠定基础。

项目基于UUV平台进行了甚低频矢量观测“可行性”的概念验证，在理论认知甚低频矢量声场空间分布特征的基础上，利用矢量水听器悬挂优化减振、无人潜水器平台降噪和无人潜水器平台声散射影响弱化等技术途径完善了无人潜航器甚低频矢量观测系统设计，实现低噪声无人潜航器平台的海洋声学信息观测，并开展了海上试验数据分析验证了甚低频矢量声场空间分布特征，评估了无人潜航器平台甚低频矢量观测系统对海洋声学信息的“保真性”和无人潜水器平台进行甚低频矢量观测的“可行性”，为未来甚低频方面的科学研究和技术应用奠定基础。