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high-resolution-one-dimension
高分辨率要求系统具有大的带宽，瞬时带宽的增加必将提高系统对硬件的要求，本文采用方便灵活的步进频率波形信号。脉间频率步进波形通过子脉冲载频的步进变化来获得大的有效带宽，使成像具有高分辨率，采用加窗和补零方法提高信噪比，但该信号对目标径向速度非常敏感。采用补零方法提高距离取样分辨率，使距离像细化，并用公式说明了补零只能提高距离取样分辨率，并不能改变频率步进信号的距离分辨能力。该信号波形对目标径向速度的敏感，使目标能量分散到邻近的距离单元造成距离分辨率下降，如果不事先进行速度补偿，直接对回波信号进行逆傅立叶变换，将使所成一维距离像发生频谱展宽，并伴有距离像发生平移。本文证明了当目标有径向速度时仍采用对回波信号直接进行逆傅立叶变换的方法将使一维距离像发生频谱展宽并伴有距离像发生频移，从而严重影响了一维距离像的质量。(high-resolution requirements of the system with large bandwidth, the increased instantaneous bandwidth will improve the system of hardware, In this paper, a flexible and convenient step frequency signals. Pulse frequency step-pulse waveform through the carrier frequency step to achieve great changes in the effective bandwidth. make imaging with high resolution, increasing the window and fill methods to improve signal-to-noise ratio is, However, the signal on the target radial velocity is very sensitive. Using zero-distance sampling method to improve resolution, so that distance as refinement, and formulates a zero-distance sampling can improve resolution, does not alter the frequency of the signal from stepping resolution capabilities. The signal waveform on the target radial velocity sens)
- 2007-04-07 22:15:33下载
- 积分：1
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GBAS
利用蚁群算法求解TSP问题，
从Location.dat文件输入每个城市的坐标。(The use of Ant Colony Algorithm for TSP problems Location.dat file input from the coordinates of each city.)
- 2009-06-18 09:08:14下载
- 积分：1
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shuzhidaishu
用牛顿法，共轭梯度法，最速下降法完成矩阵的计算(Newton conjugate gradient method)
- 2011-04-27 20:10:26下载
- 积分：1
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program
用matlab的算法，实现MUSIC时间反演，主要用于信号处理中的相关问题(MUSIC time reversal matlab algorithm, mainly used for signal processing issues related to)
- 2012-05-05 10:50:43下载
- 积分：1
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jisuanqi
可以进行简单的数学运算：加、减、乘、除,sin(),cos(),tan()等，还可以对数字进行取余和开方的运算。但仅限于十进制下，还可以进行数的正、负之间的相互转换，exit表示退出, clear表示初始化，有一个 TextField用于显示传来的计算结果；Server端用于监听连接请求、计算发送过来的两数的和、送回数据结果。(Can perform simple arithmetic: add, subtract, multiply, divide, sin (), cos (), tan (), etc. can also figure to take over and prescribing arithmetic. But only under the metric system can also be used for a number of positive and negative between the conversion, exit, said exit, clear that the initialization, there is a TextField to display the results from the calculation Server client connection requests for eavesdropping, calculated sent the two and the number of returned data.)
- 2009-03-06 20:45:25下载
- 积分：1
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irls
说明： 基于M估计的迭代最小二乘算法，其中估计量有Huber,Andrews,Hampel,Ramsay等。(M is estimated based on the iterative least-squares algorithm, which estimates there are Huber, Andrews, Hampel, Ramsay and so on.)
- 2008-12-04 16:32:39下载
- 积分：1
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FDTD_computational_electromagnetics
很有用的一篇国外关于FDTD算法的学术论文，相信对初学者有很大帮助(Useful in a foreign academic papers on the FDTD method, I believe very helpful for beginners)
- 2010-05-24 23:50:03下载
- 积分：1
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SVD
用matlab仿真，通过不同的方法计算矩阵的SVD分解，并用SVD的方法计算最小二乘问题和进行图像压缩(Matlab simulation, different ways to calculate the matrix SVD decomposition and the SVD method to calculate the least squares problem and the image compression)
- 2012-08-16 12:53:55下载
- 积分：1
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PCAmodel
用基于主元分析的方法对被控过程进行建模，可以消除变量之间的贡献性。(Accused of process modeling method based on principal component analysis, contribution between the variables can be eliminated.)
- 2012-09-26 17:33:39下载
- 积分：1
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Variogram_regress
matlab环境下，克里金插值中用回归方法和线性方法拟合出的球状模型的系数。(Kriging the spherical model coefficients using regression fitting in matlab.)
- 2012-11-28 13:00:31下载
- 积分：1
