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spectral_method_program
用matlab编写的谱方法基本程序,相信对大家有用。(Some basic matlab programs on spetral methods)
- 2009-09-17 16:02:01下载
- 积分：1
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wm
水面无人艇(Unmanned Surface Vehicle)的航迹控制对提升无人艇艇载设备
侦察观测效果以及多任务作战能力具有十分ffi要的意义。由于受到风、浪、流等
干扰环境影响,水而无人艇将产生六自由度的操纵运动,具有很强的非线性和随
机性。这将致使无人艇的航向航迹及姿态控制具有一定的难度,因此需要对水面
无人艇建立六自由度操纵模型,更好地实现对无人艇的控制。
采用经典的MMG分离建模思想,依托浜本刚实提出的水平附体坐标系,建
立水面无人艇的六自由度操纵运动方程。分析无人艇艇体、桨、舵所受的流动动
力和力矩,分别建立流体惯性力模型、流体粘性力模型、螺旋桨推力模型及舵机
模型。
考虑海况和气象环境的影响,分析风、浪作用于无人艇上的T扰力。将随机
风简化为定常风,建、风的干扰力数孕模型 采用傅汝德-克茁洛火(Froude - Krylov)
假设,研究规则波中无人艇受到的T扰力,述立波浪的r扰力数学投型。
在数学模型的站础上述立?于MATLAB/Simulink的仿i t校型,并进行典型的
冋转试验,分别分析不同海况下的无人艇的问转情况。无人艇丨 丨主航行时,在不
同海况下,绘制出其航速及船摇炻的变化曲线。通过总结分析,推论出多种海况
(The course and track control of unmanned surface vehicle (USV) is important to
improve the observational effect of the recon reconnaissance equipment and the multi-
-mission operational capability. Because of the effects of wind, wave and flow, the
unmanned surface vehicle will produce six degrees of freedom movement which has
randomicity and nonlinearity. It is difficult of the course, track and attitude control of
unmanned surface vehicle, so six degrees of freedom movement model is built for the
better control of unmanned surface vehicle.
According to the classic MMG s separated modeling theory and the horizontal
body axes system which was developed by Hamamoto, this thesis describes a six
degrees of freedom motion equation of unmanned surface vehicle. Through analyzing
the hydrodynamic force and moment, the fluid inertia force model, the fluid viscous
force model, propeller thrust model and steering gear model are built respectively.
Considering )
- 2016-03-29 10:22:42下载
- 积分：1
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exp06_adaptive_notchfilter
自适应陷波器的仿真程序,初级入门的matlab仿真程序(Adaptive Notch Filter Simulation procedures, the initial entry of matlab simulation program)
- 2008-05-29 17:10:49下载
- 积分：1
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beamform
线阵，圆阵，圆柱阵，球阵三维波束形成图，二进制和十进制（小数）的转换(The 3D beamforming diagram of the linear array, circular array, cylindrical array ball array, binary and decimal (decimal) conversion)
- 2013-03-05 22:04:34下载
- 积分：1
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功率谱密度
用于计算表面粗糙度功率谱密度，及将二维功率谱密度转换为一维功率谱密度(It is used to calculate the power spectral density of surface roughness and transform the two-dimensional power spectral density into one dimensional power spectral density.)
- 2021-01-13 22:18:47下载
- 积分：1
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neifing
利用最小二乘法进行拟合多元非线性方程，用于特征降维，特征融合，相关分析等,基于chebyshev的水声信号分析。( Multivariate least squares fitting method of nonlinear equations, For feature reduction, feature fusion, correlation analysis, Based chebyshev underwater acoustic signal analysis.)
- 2016-12-22 20:01:04下载
- 积分：1
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matlab-work
f=zeros(30,30)
f(5:24,13:17)=1
imshow(f, notruesize )
F=fft2(f,256,256)
F2=fftshift(F)
figure,imshow(log(abs(F2)),[-1 5], notruesize )
- 2010-11-20 17:07:18下载
- 积分：1
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Untitled
svm 分类小例子，准确率较高。有可能是样本较少或者是样本数据取得太好的缘故。(svm classification)
- 2014-12-09 20:43:50下载
- 积分：1
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FANS_v10_win64
快速自适应非局部sar降斑，bm3d处理图像效果非常不错，但复杂度太高，本文针对bm3d复杂度太高这一缺点，对算法计算方面作出改善；通过源程序文件可以很清楚了解作者思想(Fast Adaptive nonlocal sar Despeckling, bm3d image processing effect is very good, but the complexity is too high, the paper is too high for this shortcoming bm3d complexity of computing algorithm to make improvements can clearly understand what the author thought through the source files)
- 2014-06-03 21:04:47下载
- 积分：1
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CBF
相控阵波束形成代码，具有详细注释，适合初学者使用！(Phased array beamforming code with detailed comments, suitable for beginners to use!)
- 2016-02-29 20:10:41下载
- 积分：1
