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Application_study_of_wavelet_analysis_on_ultrasoni
说明: :在深海采矿环境中超声波传输介质里存在着大量气泡、扰动沉积物、机械噪声等背景噪声与混响,导致有用信号与高
噪声信号迭加在一起,严重影响了测距精度。采用小波分析方法将超声回波信号进行3层小波分解,适当设置门限阈值对小波
系数进行处理,然后对信号进行重构,有效地抑制了信号中噪声对测量精度的影响。研究结果表明:小波方法有很好的降低回
波信号中噪声的效果,其测距精度高于自适应滤波去噪后的测距精度。(There are much background and mixture noise in the course of ultrasonic wave transmission under deep
sea mining environment,such as air bubbles and disturbed sediment and mechanical noise.Because of these factors,
the useful signals and the high noise signals are combined together,which seriously affects the distance measurement
precision.Ultrasonic echo signals are decomposed into three layer wavelets,and a threshold is set to process the
wavelet coeficients.Then the signals are reconstructed.Accordingly the influence of environment noise on distance
measurement precision is effectively restrained.Research resuhs indicate that wavelet transform method is very useful
for noise reduction in signals.Its precision is higher than that of the adaptive filtering method.)
- 2010-04-24 08:14:49下载
- 积分:1
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applepeo
苹果在线检测系统,实时性比较好,可用性更好,很好很好(Apple' s online testing system, real-time is better)
- 2009-02-19 15:42:10下载
- 积分:1
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基于MATLAB的图像面积测量方法
说明: 用MATLAB实现不规则图像的面积测量,采用像素灰度值的占比进行实现(Area Measurement of Irregular Images Using MATLAB)
- 2020-11-06 17:49:49下载
- 积分:1
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C# SCADA源码修复
C# SCADA源码修复,完全可用
- 2020-12-01下载
- 积分:1
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26
说明: 利用matlab实现图像的直接反投影重建结果(Using Matlab to Realize Direct Back Projection Reconstruction Results of Images)
- 2020-06-27 16:33:45下载
- 积分:1
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particalfilter
粒子滤波器(particle filter)程序,用粒子滤波器跟踪运动物体。(Particle filter (particle filter) process, with particle filter to track moving objects.)
- 2021-01-22 11:28:46下载
- 积分:1
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opticalflow
用光流法进行运动物体的检测和跟踪,并返回运动方向(Light flow method of moving object detection and tracking, and return to the direction of movement)
- 2009-07-15 14:03:10下载
- 积分:1
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ASM
ASM主动形状模型,实现轮廓提取有一定的帮助(ASM active shape model, contour extraction will certainly help)
- 2013-05-08 17:10:24下载
- 积分:1
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不规则图形的填充
说明: 用VC开发的图形填充算法,简单实用,
希望对你的图形开发有所帮助,
如果有什么问题,可以与我联系(development of the VC graphics filling algorithm, simple and practical, and I hope to your graphics development will help, if any, can contact me)
- 2005-11-29 15:22:20下载
- 积分:1
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Spotlight-FMCW_SAR-sliding-sub-aperture-algorithm
滑动聚束FMCW_SAR的子孔径成像算法Spotlight FMCW_SAR sliding sub-aperture algorithm(Spotlight FMCW_SAR sliding sub-aperture algorithm)
- 2011-01-08 19:41:00下载
- 积分:1