p172_1

合成孔径雷达sar信噪比相对于不同脉冲长度的MATLAB仿真程序，最后结果以图表形式给出(Synthetic aperture radar sar signal-to-noise ratio relative to different pulse lengths MATLAB simulation program, the final result is given in chart form)

进行MATLAB的详细讲述以及各种程序的展示，对于初学者是很好的帮助(MATLAB described in detail and demonstrate the various programs, is very helpful for beginners)

在matlab中，基于GUI工具箱，实现了数字滤波器和均衡器的功能(A digital filter and equalizer function, GUI-based toolbox in matlab)

基于L阵的二维信号稀疏分解的DOA估计 应用稀疏分解方法进行二维DOA估计(Estimation sparse decomposition method based on two-dimensional signal-dimensional DOA estimation of sparse matrix decomposition L DOA)

Matlab绘图系列之高级绘图，可以画特殊的图像(Matlab Mapping Series High drawings, special images can be painted)

matlab的一个PID优化算法程序(Matlab a PID algorithm optimization procedures)

音频水印水印算法，利用vc调用matlab引擎检测水印算法 ()

主要用途是对抗多径衰落。由于多径衰落的存在，使得同一个帧由于路径不同，到达用户端的时延有先有后。在相关的频域上的会造成子载波之间的相互干扰，影响 性能。另外，由于有了循环前缀，使得IFFT FFT操作把原来的线性卷积变成循环卷积，大大简化了相应的信号处理复杂度(The main purpose is to fight against multipath fading. Due to the presence of multipath fading, the first after they have the same frame different paths to reach the client delay. Would cause mutual interference between sub-carriers in the frequency domain, affecting performance. In addition, thanks to the cyclic prefix, so IFFT FFT operation to the linear convolution of the original into a circular convolution, greatly simplifying the corresponding signal processing complexity)

PLS部分最小二乘工具箱,基于K均值的PSO聚类算法,Pisarenko谐波分解算法。( PLS PLS toolbox, K-means clustering algorithm based on the PSO, Pisarenko harmonic decomposition algorithm.)

说明：  光谱特征波段的筛选，选择光谱数据中具有代表性的变量用以建立定量预测模型(This file is used to filter the spectral characteristic variables)