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lunwen
- 典型潜艇水下辐射噪声空间分布特性测试与分析技术研究
Auditoryfeatureextractionofnoiseradiatedfromanunde
- 该书目介绍了水中目标辐射噪声的听觉特征提取,可用于海洋遥感的应用
Feature_Extraction_of_Ship-radiated_Noise_Based_on
- 基于MFCC模式的舰船辐射噪声特征提取。CAJ格式。
matlab-6
- 数字图形处理实验例题 造成图像退化的原因很多,大致可分为以下几个方面: (1)射线辐射、大气湍流等造成的照片畸变。 (2)模拟图像数字化的过程中,由于会损失部分细节,造成图像质量下降。 (3)镜头聚焦不准产生的散焦模糊。 (4)成像系统中始终存在的噪声干扰。 (5)拍摄时,相机与景物之间的相对运动产生的运动模糊。 (6)底片感光、图像显示时会造成记录显示失真。 (7)成像系统的像差、非线性畸变、有限带宽等造成的图像失真。 (8) 携带遥感仪器的飞行
1111111111111111
- 分析了声强测量的特点、优点和有关声强测量的基本原理,并与通常的声压测量进行了比 较。研究了基于双通道FFT分析仪的虚拟式声强测量系统的原理与组成。分别采用声强法和声压法对 电动机辐射空气噪声声功率进行了测定。结果表明,采用声强测量技术对电机噪声进行测量分析,能够 在工业现场准确地评价电机噪声声功率级,克服了传统的采用声压法测量易受环境影响而要进行数值 修正的问题以及声功率测量必须在特定声学环境里测量的问题。该方法在噪声测量中有一定的优越 性。 -VC++
matlab
- FIR2滤波函数在舰船辐射噪声工程中的具体应用-the fir2 s practice
feature
- 该文件包含了一些常用的声辐射噪声的特征提取方法,包括波形的包络特征,高阶谱特征,分形维特征,奇异指数特征等。-The document contains some common acoustic feature extraction method of noise, including waveform envelope characteristics, higher order spectral features, characteristic of fractal dimension, si
Shon
- 辐射噪声功率谱特征提取及系统实现Ship radiated noise power spectrum feature extraction and system implementation-Ship radiated noise power spectrum feature extraction and system implementation
wuguoqing1
- 文章给出了水声波导模型下垂直阵和单水听器测鼍水下目标辐射噪声的误差和修正方法,以便使两种测量结果一致和 统一。-This paper gives a model acoustic waveguide vertical hydrophone array and a single measurement of underwater radiated noise Tuo error and correction method in order to make consistent and unif
wuguoqing4
- 垂直阵和单点两种辐射噪声测量法的误差比较,吴国清的论文-Two vertical array and a single point of error radiated noise measurements compared to Wu Guoqing papers
demon
- 对实际采集的舰船辐射噪声进行了demo谱分析,分别采用了窄带解调和宽带解调两种方式,得到了较清晰的轴频和叶频信息。-use narrow-band and broad-band methods to demodulate the ship-radiated noise which is actually colleted, there can see clear axle frequency and blade frequency in the demo spectrum.
jianchuantext
- 实现对舰船辐射噪声的建模,即线谱和连续谱的叠加。-To realize modeling of ship radiated noise, that is the superposition of line-spectrum and continuous spectrum .
sqr_sin_n
- 舰船辐射噪声的产生,可利用其模拟舰船辐射噪声,从而达到定位等目的-generation of Ship radiated noise
Design-for-Ocean-ambient-noise-
- 分析海洋环境噪声矢量场特性对低噪声潜艇辐射噪声的测量、信号检测、设备抗干扰能力和系统测量增益的有效提高、以及优化阵的设计技术和海洋环境噪声测量设备(浮标和布阵)的研究具有重要的作用。-Analysis of ocean ambient noise vector field characteristic of low noise submarine radiated noise measurement, signal detection, equipment anti-interference a
fushezsh
- 舰船辐射噪声对舰船隐蔽性的重要性决定了其重要研究意义,提出了一种新的舰船辐射噪声模拟方法-The importance of the concealment of the ship radiated noise of ships determines its important research significance, this paper proposes a new method of ship radiated noise simulation
jianchuanfushezaoshengmoxing
- 主要介绍了舰船辐射噪声的生成,包括宽带连续谱和线谱的建模仿真,得到了不错的效果-Mainly introduces the generation of ship radiated noise, modeling and simulation, including broadband line spectrum and continuous spectrum, obtained good results
baizaosheng
- 主要介绍了基于BOX_MULLER算法产生的白噪声,并对舰船辐射噪声进行了仿真-The white noise generated by BOX_MULLER algorithm is introduced, and the radiated noise of naval vessel is simulated.
xianputiqu
- 该算法实现对舰船辐射噪声的建模以及对其中线谱的提取-The algorithm modeling ship radiated noise and the extraction of its neutral spectrum
fushezaosheng
- 能够产生辐射噪声谱,而且可以修改船速,螺旋桨速等(Can produce noise, and can modify the speed of the ship, propeller speed etc.)
程序
- 在光纤通讯仿真中,产生QPSK,16QAM,64QAM信号,并添加激光相位噪声和自发辐射噪声(In optical fiber communication simulation, QPSK, 16QAM, 64QAM signals are generated, and laser phase noise and spontaneous radiation noise are added.)