海洋环境噪声 meaning in Chinese
ambient sea noise
Examples
- A hydrid wind - generated noise model of normal mode and ray
射线混合风关海洋环境噪声模型 - The data on underwater acoustic spread and ocean environment noise , obtained by the buoy system , have been kept by some navy database as ocean environment base data
浮标监测系统所获取和记录的水声传播试验数据和海洋环境噪声数据已经作为海洋环境基础数据被海军有关数据库存录。 - 3 . a novel modular learning strategy is present based on the cross - component in the wvd and neural network for the detection of a target signal of interest in a nonstationary oceanic environmemt and this strategy makes no assumptions on the environmemt . simulations show that this new method has much superiority over matched filter
首次利用wigner - ville分布中的交叉项并结合人工神经网络，提出了一种新的基于模块学习策略的信号检测方法，该方法对淹没在非平稳海洋环境噪声中的目标信号可进行有效地检测，并且这种学习策略没有对环境噪声作任何假设。 - The main research advances can be summarized as follows : ( 1 ) study the signal processing ' s performances and methods of homing torpedo system comprehensively , in order to setting up a corresponding mathematical models ; ( 2 ) analyze the ocean channel ' s effects on the work of homing system , then found some models such as target echo signal , noise ( including background noise , target radiating noise , etc ) , ocean reverberation . according to them , simulate the array signal ; ( 3 ) the system structure , every function blocks composing are studied and founded thoroughly . then , discuss methods of signal processing in time domain and airspace domain ; ( 4 ) program the simulation software of torpedo ' s homing system according to the simulation models and flow charts , which connected with torpedo ' s control part
本文所作的主要工作及研究成果主要有以下几个方面： ( 1 )对自导工作过程中的信号与信息处理的基本理论与方法进行了较为全面的研究，为建立一个较为完备的自导仿真系统提供了理论基础； ( 2 )讨论了自导系统工作过程中海洋信道对目标回波信号与目标辐射噪声信号等的影响，建立回波信号的数学模型、环境场中的噪声信号模型(包括海洋环境噪声、目标辐射噪声与鱼雷背景噪声等)与海洋混响模型，模拟产生了声自导系统基阵接收到的回波信号与噪声信号； ( 3 )深入研究并建立了自导仿真系统的总体框架，给出各个具体功能模块组成，讨论了声自导系统对信号的时域与空域处理，并结合仿真程序中阵列信号处理模块，给出固定多通道波束形成的仿真实现过程； ( 4 )根据系统的仿真模型与已建立的仿真流程图编制了通用鱼雷模拟器自导系统仿真软件，通过网络与控制系统相连，组成完整的鱼雷模拟器。