coaxial

matlab code for modelling low pass filters

说明：  管道运输问题 能够实现优化 从而帮助我们找到最短路径(Pipeline transportation problem can be optimized in order to help us find the shortest path)

说明：  柯恩类时频分布演示例程，实现信号的二次型时频分布(Cohen Class Time-Frequency Distribution demo routines to achieve signal-quadratic time-frequency distribution)

这是一个进行卫星轨道预报的程序。导航卫星；自主轨道预报；状态转移矩阵。无错误(This is a satellite orbit prediction program. Navigation Satellite autonomous orbit prediction state transition matrix. No error)

此文件为四种空间DOA估计的MATLAB程序，包括：MUSIC, ROOTMUSIC，ESPRIT和MVDR四种方法，并带有相应的仿真图，便于比较其优缺点,很有用哦(MATLAB for DOA estimate : MUSIC, ROOTMUSI,ESPRIT and MVDR,the coresponding figures are acompanied to compare the advantages and disadwantages,they are useful)

说明：  本篇文章介绍了基于Matlab环境下的地面模型构建，采用了合适的插值拟合函数实现了构建。(This article describes an environment based on Matlab model of the ground, using a suitable fitting function interpolation building.)

该模型实现了一个通用的OFDM TX和RX，这是不依赖于任何特定的行业标准。该模型的目标是开发和研究不断（不是“突发”）载波同步和定时跟踪方案。该技术纳入然后可以扩展和修改，以标准的具体通讯套件。该模型采用了“收购”技术，它利用了循环前缀相关属性，以赶在试图完成罚款跟踪算法一帧的边界粗略的估计。该模型实现了一个16点64循环前缀的OFDM载波波形。在OFDM符号有16个飞行员，3后卫音（0，带边幅），并使用45 QAM的剩余数据流4。 这包括最新型的衰落信道，误码率计算，并改善控制回路动态。(This model implements a generic OFDM TX and RX, which is not tied to any particular industry standard. The objective of this model is to develop and explore a continuous (not “bursty”) carrier and timing tracking synchronization scheme. The techniques incorporated can then be extended and modified to suite specific communications standards. The model uses an “acquisition” technique that exploits the correlation properties of the cyclic prefix to get a rough estimate of the frame boundary before attempting to accomplish the fine tracking algorithms. The model implements a 64 carrier OFDM waveform with a 16 point cyclic prefix. The OFDM symbol has 16 pilots, 3 guard tones (0 amplitude at band edge) and uses 4 QAM for the 45 remaining data streams. This latest model includes a fading channel, BER computation, and improved control loop dynamics. )

closed loop control of flyback converter

自编的增加维数精细积分求解非线性动力学方程的程序(pim method)

Wiener filter based on tracking a priori SNR using Decision-Directed method, proposed by Scalart et al 96.