AIEM

由于不同的坐标系坐标用于不同的场合,需要通过坐标转换将所得的WGS284 坐标转换到不同的坐标系统中去,从而满足不同领域的需要( Coordinate the different coordinate systems used in different situations, needs to be obtained WGS284 coordinate transformation to a different coordinate transformation to the coordinate system to meet the needs of different areas)

this is the matlab code for pcm "pulse code modulation"

This code for shift factor problems

vb与matlab混合编程的例子，COM+DLL,非常详细(vb and matlab examples of mixed programming, COM+ DLL, a very detailed)

进行傅里叶变换的详细说明，可以依据操作快速掌握福利叶变换(A detailed description of Fourier transform, can be based on the operation quickly grasp the welfare leaf transformation)

DAB型全桥DC-DC变换器与3相PWM型变换器级联仿真，可用于充放电系统及新能源领域，实现能量的双向流动。(DAB full-bridge DC-DC converter with three-phase PWM converter cascade simulation model can be used to charge and discharge systems and new energy field, two-way flow of energy.)

针对16阵元的均匀直线阵，使用MVDR算法和DREC两种方法分析方向图性能，DREC法进行特征值分解，大特征值对应的特征向量构成信号子空间。(For 16 array element uniform linear array, eigendecomposed MVDR algorithm using two methods and DREC pattern analysis performance, DREC method, large eigenvalues eigenvectors corresponding signal subspace.)

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.)

source code for imageproccesin

四节点矩形单元matlab有限元程序，使用于一般通用程序(four nodes rectangular modules Matlab finite element program, the use of common procedures in)