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Tropospheric-scatter-communications
第１章 对流层有关特性
第２章 对流层散射传播机制
第３章 对流层散射传输损耗
第４章 对流层散射信号慢衰落特性
第５章 对流层散射信号相关特性及谱特性
第６章 对流层散射信号统计分布特性
第７章 分集接收信号统计分布特性
(Transmission mechanism, transmission loss, slow fading characteristic, correlation characteristic and spectrum characteristic, statistical distribution, diversity reception signal statistical distribution characteristics
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- 2014-11-05 14:54:29下载
- 积分：1
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1
说明： 简单滤波器设计,在通信建模过程中是最基础的(the design of the simple filter)
- 2014-12-04 22:36:54下载
- 积分：1
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wzrh
(1)针对在线计算量大这一缺陷，将预测控制中的柔化输出信号的思想推广到柔化输入信号，使得约束条件被简化为仅对当前控制量的约束，可以直接计算得出；同时该方法避免了求逆矩阵，大大减小了计算量，并能够保证控制算法的可行性和良好的控制性能。
(2)针对传统算法中设计参数整定困难这一缺点，应用基于BP神经网络变参数设计的广义预测控制算法，实现了对控制量柔化参数的在线调整。
(3)利用带有遗忘因子的最小二乘法对系统辨识。本文通过仿真发现该方法对于Hénon混沌系统并不完全适用，可考虑利用其他优化系统辨识的方法对本方法进行改进，以期达到更好的辨识效果。
(4)针对系统稳定性分析复杂，本文在控制增量前加入前馈因子，保证所选的Lyapunov函数使闭环系统满足Lyapunov稳定判据，由此证明闭环系统稳定。
(1. To solve the problem of GPC huge computation, algorithm with input increment constraints is presented in which the concept of output softness was used to soften the input increments．As a result, the constraints are simplified to be the only one constraint on the current control increment which can be computed directly. At the same time, it needn’t computing the inverse matrix and thus reduces large computation. Moreover, it guarantees the feasibility of the algorithm and has good control performance．
2. To overcome the difficulty in the choice of tuning parameters in traditional GPC, a GPC algorithm with variable parameter design based on BP neural network. is presented，in which the input softness parameters are tuned on line.
3. In this paper, we Identify system by using the least square method with forgetting factor. However, after system simulation, we realize that this method doesn’t fit the Hénon chaotic system perfectly. So we recommend modify this method by other Optimizati)
- 2013-05-06 21:59:10下载
- 积分：1
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自适应均衡器
说明： 研究自适应均衡器，分别采用LMS算法以及RLS算法迭代。(The adaptive equalizer is studied. LMS algorithm and RLS algorithm are used to iterate and the learning curve is given.)
- 2020-06-23 14:57:55下载
- 积分：1
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against_interfere
这时极短软件抗干扰方面的程序代码，希望对大家有帮助。(very short time the anti-jamming software code, and I hope to be helpful.)
- 2006-12-13 17:07:51下载
- 积分：1
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GMSKMAT
GMSK 的调制与解调 可以出图 MATLAB(GMSK modulation and demodulation can be a MATLAB Figure)
- 2008-05-22 21:25:13下载
- 积分：1
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jc
说明： matlab实现加汉明窗，矩形窗，并对它们进行傅里叶变换，并实现频谱的分析。(matlab realize Jia Hanming window, rectangular window, and they are subjected to Fourier transform, and to achieve the analysis of the frequency spectrum.)
- 2013-03-11 19:27:30下载
- 积分：1
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pso1
基本粒子群程序，可以给急需的人提供些帮助。
(Of the particle swarm program)
- 2012-11-21 16:27:51下载
- 积分：1
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evaluation
估计理论，关于目标估计的基本知识,常用的最小二乘估计，方差估计等(evaluation theroy)
- 2014-06-15 00:13:07下载
- 积分：1
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thinwire_rcs
这是计算thinwire的散射程序，对研究电磁散射的同行很有用(This is the calculation of the scattering thinwire procedures, the study of electromagnetic scattering useful peer)
- 2009-03-28 09:30:19下载
- 积分：1
