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armok01167658
最近用Mega128写了一个128点FFT程序，浮点运算，加汉宁窗。由于窗函数和旋转因子通过查表得到，所以速度还可以，程序中给的初值是通过高速AD采集的20KHz正弦信号。计算结果与Matlab的FFT函数得到的结果相同。 (Mega128 recently wrote a 128-point FFT procedures, floating-point operations, Hanning window. Since the window function and the twiddle factor look-up table has been adopted, so the speed can also be, the initial value to the process through high-speed AD collected 20KHz sinusoidal signal. The calculation results with the Matlab)
- 2007-09-02 21:16:08下载
- 积分：1
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conv
covolution is a technique used to sample two signals producing the third signal.there are two types of convolution namely linear and circular convolution.
- 2015-01-08 13:48:01下载
- 积分：1
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boyinfeiji
一个用于波音飞机的程序，还有相关文档，共相关人员参考(A program for Boeing aircraft, and related documents, a total of reference for the related personnel
)
- 2013-12-18 21:44:33下载
- 积分：1
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ofdm_gito
CMMB标准中OFDM matlab 仿真，学习OFDM入门经典(CMMB OFDM Matlab simulation ,is a typical introduction of OFDM)
- 2010-08-11 17:10:01下载
- 积分：1
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Highboost
frequency domain filters
- 2009-12-10 17:12:45下载
- 积分：1
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PP_ContCode
this code explain how to detect the palmprint to facilate identification and verification of palmprint
- 2014-09-29 18:31:28下载
- 积分：1
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GuiStaticLib
Guilib的静态库源码，修改了一些编译错误，以及在不同windows上面存在的一些问题(The static library source code of Guilib. Modified some compilation error, and some bugs that exist in different windows version.)
- 2014-02-20 09:41:06下载
- 积分：1
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二自由度碰撞系统龙格库塔数值求解
说明： 二自由度碰撞系统龙格库塔数值求解方法算例程序(Numerical solution of Runge Kutta for two degree of freedom collision system)
- 2020-01-17 10:35:12下载
- 积分：1
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雷达CFAR恒虚警检测一维蒙特卡洛仿真
说明： 雷达恒虚警检测（CFAR）一维距离像蒙特卡洛仿真，探究不同信噪比下CFAR检测概率，在一维CFAR基础上修改程序得到。参考《雷达信号处理基础》一书。(One dimensional range profile Monte Carlo simulation of CFAR is used to explore the probability of CFAR detection under different signal-to-noise ratio. The program is modified based on one-dimensional CFAR. Refer to the book "Fundamentals of radar signal processing".)
- 2020-11-10 16:29:46下载
- 积分：1
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matlab_FEM_dismesh
DistMesh giving a singular FEM matrix?(Hi
Anyone here with some experience of using DistMesh in finite element code? I m solving the scalar Helmoltz equation in an annular region in 2D:
rho_1 < rho < rho_2
where rho_1 is the radius of a Perfect Electric Conducting cylinder and rho_2 is where the mesh is truncated using an Absorbing Boundary condition.
Now, I ve written code to mesh the region myself (by dividing the region into annular rings and picking a fixed number of points on each ring) and I ve written another program which uses DistMesh to mesh the region. I get a nice solution using my own meshing code but the FEM matrix becomes singular when I use DistMesh. This is the DistMesh Code I used:
Circle with hole
rABC=1.5
rCyl=0.5
fdstring=sprintf( ddiff(dcircle(p,0,0, f),dcircle(p,0,0, f)) ,rABC,rCyl)
fd=inline(fdstring, p )
box=[-2,-2 2,2]
[p,N]=distmesh2d(fd,@huniform,0.04,box,[])
I tried changing box and the 0.04 value (initial edge length). But every time, the matrix becomes sin)
- 2010-06-05 09:17:55下载
- 积分：1
