1) Ship acoustic field
舰船声场
1.
This article uses area correlation method and add-window coefficient method to discuss the characteristics of ship acoustic field and magnetic field and compares them with those in acoustic magnetic combinational mines- weeping state.
采用面积相关法和加窗系数法探讨了舰船声场和磁场的相关特性,并将其与声磁联合扫雷的情况进行了对比;最后给出了相关函数峰点跟踪的实现方案。
2) ship radiated noise
舰船噪声
1.
By calculating the 112D spectrum of actual ship radiated noise, fine results in classification and identification have been achieved.
通过计算实际舰船噪声的 112 维谱 ,并利用它所具有的特征参数 ,对舰船信号进行了分类与识别 ,达到了较好的识别效果 ,为进一步开展水下目标探测与识别研究打下了良好基
3) ship noise
舰船噪声
1.
When SNR (signal to noise ratio) is low, detecting ship noise with traditional methods such as energy detector and matched filter is not quite effective.
分析了舰船辐射噪声 (简称舰船噪声 )与 1 /f信号的关系 ,提出了一种基于小波变换的信号检测方法 ,对白噪声背景下的舰船辐射噪声进行了检测 ;推导了相应的检测统计量及其统计分布特性 ,并与传统的匹配滤波器、能量检测器进行了比较 ,计算机仿真结果证明了本方法是有效的 ,在较低的信噪比下得到较好的检测效
2.
In this paper,Mallat wavelet is chosen as mother wavelet to obtain the time-frequency characteristic of ship noise.
选用Mallat小波作为母小波进行小波分析,得到舰船噪声信号的时频特征,体现出小波谱良好的时频定位能力。
5) warship magnetic field
舰船磁场
1.
The result of magnetic measuring experimentation is time-serial data-set,which could not been used to model warship magnetic field directly.
目前,海上舰船磁场测量试验获得的数据一般为时间通过曲线,不能直接用于舰船磁场建模。
6) vessel's magnetic field
舰船磁场
1.
Magnet simulation is often used in calculating a vessel′s magnetic field,but the precision is affected by this positions of the magnet that often depend on human experience.
采用磁体模拟舰船磁场是一种常用且有效的方法,然而,过去磁模拟体位置的确定常依赖于人的经验,局限性较大。
补充资料：混响声场
见声场。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条