suijiguocheng

codes for erp lab. a lot of functionalities foe eeg

说明三个分段相连的信号的傅里叶变换和时频分析信号的傅里叶变换和时频分析(Note the three sub-linked signal Fourier transform and time-frequency analysis of signals in Fourier Transform and Time-Frequency Analysis)

适合MATLAB初学者进行GUI学习，包括了李显洪《Matlab7.x界面设计与编译技巧》,精通GUI图形界面编程(MATLAB),MATLAB_GUI设计学习手记,GUI制作1,2(MATLAB GUI for beginners to learn, including Li Xianhong " Matlab7.x interface design and build skills," proficient in GUI graphical interface programming (MATLAB), MATLAB_GUI design learning Notes, GUI making 1,2)

说明：  通过并行压缩进行二维信号压缩，提出了一种利用并行压缩传感技术对二维信号进行压缩的新方案。根据这个原理，译码器的重新构造可以并行进行。通过对二维信号进行某些排列，可以确保所有列具有大致相同的密度级别，并且可以使用相同的测量矩阵进行采样。这样可以避免二维信号的矢量化，从而大大减小测量矩阵的尺寸。我们证明，如果排列良好，重建均方误差的上限会更紧。为了说明这一方案，我们将其应用于视频压缩并使用不同帧的排列有两种：参考帧的基于Z字形扫描的排列和非参考帧的基于块测试的排列。仿真结果表明，在相同的压缩比下，峰值信噪比比比在无置换情况下可提高3-7db左右。(we propose a new scheme to compress 2D signals using parallel compressed sensing. According to this seheme, the reeonstruction at the decoder can be performed in parallel. By performing certain permutation on a 2D signal, all columns are insured to have approximately the same density level and can be sampled using the same measurement matrix. In this way, vectorization of a 2D signal can be avoided, and thus the size of the measurement matrix can be dramatically reduced. We prove that with a good permutation, we can have a tighter upper bound on reconstruction mean square error. To illustrate this scheme, we apply it to video compression and use two kinds of permutations for different frames: the zigzag-scanbased permutation for reference frames and the block-test-based permutation for non-reference frames. Simulation results show that under the same compression ratio, the peak signal-to-noise ratio can be improved by approximately 3-7 dB compared to the case without permutation.)

波前曲扭和幅度变化对阵列测向中相干源分辨的影响(Twisted and curved wavefront amplitude variation to distinguish the impact of coherent source direction finding in an array)

说明：  细分曲面catmullClark细分算法代码，直接运行的结果为一个实例的细分结果(subdivision surface)

You can use it to simulation OFDM in BPSK,QPSK and 8PSK in AWGN channel.You can see the symbol error rate and bit error rate from these simulation.

Boost converter for voltage boost and buck.

对近红外光谱图进行处理，主要是消除颗粒分布不均匀及颗粒大小产生的散射影响。(To deal with the near infrared spectra, mainly eliminate the uneven distribution of particles and the scattering effects of particle size. )

MIT--航空航天工程中的计算方法_模拟飞机的动力学 MIT公开课程--航空航天工程中的计算方法 这门课程适用于在航空和航天工程中出现的计算方法的入门学习。其应用是从航空宇宙结构，空气动力学，动力学和控制，和航空宇宙系统选出的。其技术包括：常微分方程系统的数值积分；偏微分方程式的有限差分,有限体积, 和有限元的离散化；数值线性代数；本征值问题和带有约束的最优化。(MIT- Aerospace Engineering in the calculation of simulated aircraft dynamics _ MIT Open Course- Aerospace engineering calculation methods for this course in aviation and aerospace engineering calculations appear in an introduction. The application is from aerospace structures, aerodynamics, dynamics and control, and aerospace systems selected. The technologies include: numerical integration of ordinary differential equations systems partial differential equations of finite difference, finite volume, and finite element discretization numerical linear algebra eigenvalue problems with constraints and optimization.)