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DDC

于 2013-12-24 发布 文件大小:2KB
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  DDC 利用cIC和半带滤波器 抽取实现下变频

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MATLAB仿真DDC程序.txt,5329,2008-12-05

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  • suki
    利用music算法,在考虑幅度误差时,对信源个数,信噪比,快拍数进行变化,观察这三个数在什么范围变化时测向的准确度高。天线测向(Music algorithm, considering the magnitude error, the number of sources, signal-to-noise ratio, snapshots number of changes observed these three the number of measured to what extent changes to the high accuracy. Antenna direction finding)
    2012-05-26 11:14:29下载
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    This file compares three different versions of the Kalman filter. The Kalman filter is used for recursive parameter estimation. The Kalman filter can handle noisy measurements. The first implemented filter (fcn_KF) is the Kalman filter with standard update of the covariance matrix P. The covariance matrix reflects the uncertainties of the predictions. To improve the numerical stability Potter developed a square root update (fcn_KF_SRP) of the covariance matrix P. Another version is the square root covariance update via triangularization (fcn_KF_SRT). This file generates a model. Then the three Kalman filters perform an estimation of the model parameter. At the end the results are compared. Sources: Simon, D. (2006): Optimal state estimation Kaminski, P. (1971): Discrete Square Root Filtering: A Survey of Current Techniques Golub, G. (1996): Matrix Computations
    2014-02-14 18:30:49下载
    积分:1
  • music_two
    述是经典MUSIC算法的基本原理,许多限制是可以放宽或取消的。首先,关于均匀线阵的限制不是必须的,实际中可采用几乎是任意形状的阵列形式,只要满足在个独立信号源的条件下,矩阵具有个线性无关的列就可以了。其次,天线阵元在观测平面内无方向性这一点也不是必要的,而且还可以考虑三维空间的DOA估计问题,即不仅估计信号的方位角,还要估计它的俯仰角,当然MUSIC算法还用于频率、方位和俯仰的联合估计。(Above is the basic principle of the classical MUSIC algorithm, a number of restrictions can be relaxed or canceled. First, restrictions on ULA is not necessary, the actual form of an array can be almost any shape, as long as the signal source in the independent condition matrix has linearly independent columns on it. Second, the antenna elements in a plane non-directional observation it is not necessary, but could also be considered DOA estimation of three-dimensional space, that is not only estimated azimuth signals, but also to estimate its pitch angle, of course, also MUSIC algorithm joint estimation for the frequency, the azimuth and elevation.)
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    介绍如何用matlab语言解决最优化问题(Describes how to solve optimization problems by matlab)
    2009-05-08 19:42:19下载
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