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能量检测法源代码
能量检测法是一种比较简单的信号检测方法[1], 属于信号的非相干的检测, 直接对时域信号采样值求模,然后平方即可得到;或利用FFT转换到频域,然后对频域信号求模平方也可得到。它无需知道检测信号的任何先验知识,对信号类型也不作限制。
实际上,能量检测是在一定频带范围内作能量积累,如果积累的能量高于一 定的门限,则说明信号的存在;如果低于一定的门限,则说明仅有噪声。能量检 测的出发点是信号加噪声的能量大于噪声的能量。能量检测方法对信号没有作任何假设,是一种盲检算法。
此代码“利用FFT转换到频域,然后对频域信号求模平方”方法来实现对用户的检测。(In fact, energy detection is used for energy accumulation in a certain frequency range. If the accumulated energy is higher than a certain threshold, the existence of the signal is indicated. If the threshold is lower than the threshold, then only noise is indicated. The starting point of energy detection is that the energy of signal plus noise is greater than that of noise. The energy detection method does not make any assumptions about the signal, and it is a blind detection algorithm.
This code "converts the frequency domain into the frequency domain by FFT, then calculates the square of the square of the frequency domain signal" to realize the detection of the user.)
- 2021-04-29 16:18:42下载
- 积分:1
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ImagePro
本人研究生阶段做的项目,线结构光视觉传感器的标定中的激光光条中心的提取。
1、通过JPG、PCX、GIF解码方法,来打开BMP、JPG、PCX、GIF格式图像。
2、大津展之法阈值变换,效果较好。
3、三种细化方法,Rosenfold细化、Hildith细化、Pavlidis细化。
4、基于灰度重心法的全分辨率的激光光条中心亚像素坐标的提取。(Calibration )
- 2010-03-12 11:43:58下载
- 积分:1
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DCT
说明: 图像的DCT变换 提取高频分量 和低频分量 (DCT change)
- 2011-04-12 20:10:04下载
- 积分:1
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2010射线跟踪课件3 (1)
射线追踪算法的基础理论和学习,入门课件,适用于地震学(The basic theory and learning of ray tracing)
- 2017-11-09 16:25:58下载
- 积分:1
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entropy_correlation
说明: 用于计算图像的信息熵和相关性系数,在信息隐藏的图像算法评价中有很好的应用。(It is used to calculate the information entropy and correlation coefficient of image, and has a good application in the evaluation of image algorithm of information hiding.)
- 2019-03-03 17:12:10下载
- 积分:1
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duqushipintibeijing
视频读取并提取目标背景 背景要求是静止的 效果很好(Video read and extract the target background static background requirements are well)
- 2009-03-03 10:15:16下载
- 积分:1
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PCAmatlab
matlab PCA源代码
有中文注释(source code matlab PCA has Chinese Notes)
- 2008-04-04 17:15:45下载
- 积分:1
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Level.Set.Methods.And.Dynamic.Implicit.Surfaces
Level Set Methods and Dynamic Implicit Surfaces - Ronald Fedkiw(Level Set Methods and Dynamic Implicit Surfaces- Ronald Fedkiw)
- 2021-02-16 12:59:47下载
- 积分:1
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PZY
图形学的有一个作业(graphics operations of a)
- 2005-01-07 13:17:55下载
- 积分:1
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圆检测
图像的圆检测程序。可以很好地进行灰度图的圆检测(Image circle detection procedures. Grayscale can be carried out of the circle detection)
- 2008-12-19 21:57:43下载
- 积分:1