摘要
为了有效地从风浪背景中检测舰船水压场信号,在对大量实测海浪水压场数据和舰船水压场数据分析的基础上,对海浪水压场信号的特性进行了研究,发现海浪水压场信号可用AR模型对其进行描述.从而对海浪水压场信号建立AR模型,计算AR模型的反射系数并提取其欧氏距离作为特征,采用滑动检测法对信号进行实时检测.通过大量实测数据检验其有效性,结果表明,该算法简单,能较好的检测目标信号.
In order to effectively detect the ship hydrodynamic pressure field signal from a high sea state, a large of real ocean wave hydrodynamic pressure field signal has been studied, it has been confirmed that the ocean wave hydrodynamic pressure field signal obeys the auto-regression model in a short time. Then a real-time target detection method has been proposed based on the Euclidean dis- tance between the reflection coefficients of the ship hydrodynamic pressure field signal and the reflection coefficients of the ocean wave hydrodynamic pressure field signal. By means of this method, it is possible to detect the target signal which is involved or not in received signal in real-time. The effectiveness of the method is verified by the real ship hydrodynamic pressure field signal and the real wave hydrodynamic pressure field signal.
出处
《武汉理工大学学报（交通科学与工程版）》
2010年第1期146-149,166,共5页
Journal of Wuhan University of Technology（Transportation Science & Engineering）
基金
国防重点实验室基金项目资助(批准号:51444060101JB1108)
关键词
海浪
舰船
水压场
正态分布
AR模型
反射系数
ocean wave
ship
hydrodynamic pressure field
normal distribution~ auto-regression（AR） model
reflection coefficient
