基于岸基声纳的目标运动参数估计
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摘要
为解决岸基声纳平台固定无法机动,不能采用传统的纯方位法计算目标运动要素这一问题,论文在分析舰船辐射噪声的产生的基本原理和特征的基础上,提出了基于舰船辐射噪声子带能量的目标距离参数估计方法。该方法立足于声波在传播过程中声传播损失与频率的对应关系,首先通过采用小波包分解技术提取舰船辐射噪声的各个子带的能量,通过选取合适的子带,计算子带的能量变化来解算目标的距离参数。最后,该文章通过海上实际测量进行了实验验证。实验结果表明该方法具有一定的可行性。
To solve the problem that the shore based sonar fixed which can not maneuver, the target motion element can not be achieved by using the traditional pure orientation method. The arcticle put forward a target distance parameter estimation method based on sub band energy of the ship radiated noise after analyzing the basic principles causing the nosise and characteristics. The method is estabilished in the congruent relationgship between the acoustic propagation loss and the frequency when the noise is spreading. All the sub band energy can be achieved using the wavelet packet decomposition technology,target distance parameter can be calculated by the energy changes after choosing spread sub bands.At last the method has done the experimental verfication on the sea. The result of the experiment shows that the method has certain feasibility.
引文
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