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4
说明: 本程序由MATLAB编制成的用于计算观测数据的频率和周期。(This program is used to compute the frequence and periodical.)
- 2009-03-02 16:00:15下载
- 积分:1
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migration
用matlab语言写的地震偏移成像软件集,很有用的东东呵(Matlab language used to write the seismic migration imaging software set, very useful Dongdong Oh)
- 2021-02-23 17:19:40下载
- 积分:1
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Simulink_Matlab--wind
基于Simulink_Matlab的变速恒频风力发电系统控制与仿真研究(Based Simulink_Matlab VSCF Wind Power System Control and Simulation)
- 2011-04-21 15:37:30下载
- 积分:1
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tianxian
关于蝶形宽带微带天线的设计
索引:蝶形宽带微带天线. 设计方案 排列效率
摘要:现在提出一种基于绝缘体衬底的有限长度的宽带微带天线的设计方法。这种方法快速、对计算精度要求较低,是建立在一蝶形天线进行二等分而形成的两个梯形天线的 。首先设计出单边的梯形部分,然后制作出相同的另一部分并在其顶点处将其连接。与理论计算相比在X波段上实验测量表现得很好。其有效带宽达到10.6%。
(One approach to an antenna book starts with a discussion of how antennas radiate. Beginning with Maxwell’s equations, we derive electromagnetic waves. After that lengthy discussion, which contains a lot of mathematics, we discuss how these waves excite currents on conductors. The second half of the story is that currents radiate and produce electromagnetic waves. You may already have studied that subject, or if you wish to further your background, consult books on electromagnetics.The study of electromagnetics gives insight into the mathematics describing antenna radiation and provides the rigor to prevent mistakes. We skip the discussion of those equations and move directly to practical aspects. )
- 2011-05-25 14:38:06下载
- 积分:1
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yuanzhut
一杯沸水冷却,圆柱体模型,底面半径0.05m,高0.1m,周围温度20度,初始水温100度
方程是四维输运方程(常数a^2=k/(c*p),k是热传导系数0.6006焦/(米*秒*度))
初始条件:t=0时水等于100度
边界条件:1.上下壁都是自由冷却,第三类边界条件,周围温度保持在20度(H=k/h,h取1)
2.杯壁绝热,第二类边界条件
(cup of boiling water cooling cylinder model, the bottom radius of 0.05m, 0.1m high. temperature around 20 degrees, initial temperature of 100 degrees equation is four-dimensional equations (a constant ^ 2 = k/(c* p), k is the thermal conductivity coefficient of 0.6006 Coke/(m** seconds degrees)) initial conditions : t = 0 to 100 degree water boundary conditions : 1. upper and lower walls are free cooling, the third boundary conditions, maintain the temperature around 20 degrees (H = k/h, h for 1) 2. Beibi insulation, the second boundary condition)
- 2007-04-11 00:14:47下载
- 积分:1
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ALOHA
纯ALOHA协议的源程序。分为主程序和调用程序(The source of the pure ALOHA protocol. Divided into the main program and the calling program)
- 2012-05-22 17:13:37下载
- 积分:1
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audio_1
语言去噪端点检测 进行语言去噪和端点检测(Language de-noising endpoint detection)
- 2013-04-23 20:17:22下载
- 积分:1
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w_segy
读取segy数据、文件,写道头卷头等等,内置说明书,简单易用(Read the segy data, file, writes head roll and so on, the built-in instructions, easy to use)
- 2013-12-30 10:20:00下载
- 积分:1
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Matlab7jichuyutigao
这是一个MATLAB7.0基础与提高例题的所有源码,希望对MATLAB7.0学习者能有所帮助。(This is a foundation and raise the MATLAB7.0 example of all-source, in the hope that students can MATLAB7.0 help.)
- 2009-04-20 17:20:53下载
- 积分:1
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matlabhunduchafa
这是matlab灰度差程序,其中包含阈值的获得和镜头突变的检测,适合初学者(This is a gray-scale difference matlab program, which includes access to the threshold of detection of mutations and lens, suitable for beginners)
- 2008-05-06 00:49:15下载
- 积分:1