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MATLAB2
基于DCT的图像检索技术
用统计特征法和不变矩法
MATLAB程序(DCT-based image retrieval method using statistical features and invariant moment method MATLAB program)
- 2010-05-23 00:07:29下载
- 积分:1
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一类Bessel方程在不同边界条件下
用差分法解一类Bessel方程在不同边界条件下的离散解(difference method for solving a class of Bessel equation in different boundary conditions of the Discrete Solutions)
- 2005-04-02 14:57:54下载
- 积分:1
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naivebayes
naive bayes分类法的matlab实现,包含训练和测试部分(naive bayes classification matlab realize, including training and testing parts)
- 2013-07-16 09:36:24下载
- 积分:1
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wave_forward
声波方程的正演程序,注释非常清晰,并且可以显示正演波场快照。(Acoustic wave equation forward procedure, comments are very clear, and can display the forward wave field snapshot.)
- 2021-04-12 16:48:56下载
- 积分:1
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static_solution_propagation_1
光在格子中传播,前30为有格子,后35为无格子,描述其轨迹(propogaton in lattice for the first 30,there be in lattice and the nex 35 thera is no lattice)
- 2013-05-03 02:11:09下载
- 积分:1
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koupintiaozhi
该程序是基于matlab/simulink下的扩频调制仿真通过采用PN码来调制信号,实现扩频调制(
The program is spread spectrum modulation simulation matlab/simulink based under PN code through the use of modulated signals, spread spectrum modulation)
- 2015-04-19 20:32:32下载
- 积分:1
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libsvm-3.17
支持向量机分类器的工具箱,可以载入自己的数据实现支持向量机分类。(Support vector machine classifier toolkit, you can load your own data to achieve support vector machine classifier.)
- 2014-08-28 19:42:49下载
- 积分:1
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simulation
在一个移动通信系统中,发射信号是一个未调制的音频x(t)=cos(2πft),其中f=f0+fi。设标称载波为f0=1GHz,并设fi =512Hz。假定移动用户在一个繁忙的高速公路上距离基站l公里处的地方,从开始从每小时60公里的速度开始,其速度(在0.01秒的时间间隔内测量)以1/2的概率随机的增加或减少1/10公里每小时。试仿真移动用户在这2s的时间间隔内所接收到的信号(及其频谱)。接收信号可以表示为:
y(t)=a(t)Cos[2π(fo+f1)(t-△t)]
式中 △(t)=d(t)/c
且 a(t)=k/d2(t)
在上面的表达式中d(t)是在t时刻基站与移动用户的距离,c是光速,△(t)是传播延迟,而a(t)是信号在t时刻的衰减,并假设在这2s内a(t)是一个常数。利用复低通等效模型来进行仿真。(In a mobile communication system, the transmitted signal is an unmodulated audio x (t) = cos (2πft), where f = f0+ fi. Let nominal carrier of f0 = 1GHz, and set fi = 512Hz. Assume that mobile users on a busy motorway station l kilometers place, starting the beginning of 60 kilometers per hour, the speed (measured in 0.01 second interval) to increase the probability of a random 1/2 or reducing 1/10 km/h. Simulation test signal which the mobile subscriber in the 2s time intervals of the received (and its spectrum). The received signal can be expressed as:
y (t) = a (t) Cos [2π (fo+ f1) (t- △ t)]
Where △ (t) = d (t)/c
And a (t) = k/d2 (t)
In the above expression, d (t) at time t is a base station and a mobile user s distance, c is the speed of light, △ (t) is the propagation delay, and a (t) is the attenuation of the signal at time t, and assuming that 2s within a (t) is a constant. Using complex low-pass equivalent model for emulation.)
- 2015-11-24 17:16:20下载
- 积分:1
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hht谱
说明: 求希尔伯特谱的程序,可以出图像,可以运行。(A program that can run Hilbert spectrum.)
- 2020-09-21 20:13:13下载
- 积分:1
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frameread
Read in frame sequence from RAW image files.
- 2010-06-30 20:15:34下载
- 积分:1