yichuansuanfa

研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散 余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的 K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角 阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这 反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特 性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。 虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。 (Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect. Although from related to the performance of the sense, DCT is a kind o)

用两种调制解调方法，即：FM、DSB对模拟输入信号进行调制与解调。(Modulation and demodulation of two methods, namely: FM, DSB of the analog input signal modulation and demodulation.)

阵列信号处理的波达角方向估计，用于八单元线阵，对多个接受信号的来波方向进行估计(Array signal processing direction of arrival angle estimation, for the eight-cell linear array, to receive signals on a number of DOA estimation)

本压缩包包括OFDM系统的信道估计理论与matlab仿真程序两部分，其中m文件为仿真程序。(The archive includes OFDM system channel estimation theory matlab simulation program with two parts, one m file for the simulation program.)

The program computes the solution to a Laplace problem by the boundary element method.

遥感技术与遥感数字图像分析处理方法；遥感技术与遥感数字图像分析处理方法(Remote sensing technology and remote sensing digital image analysis and processing methods)

figure for fibercode

这是一部练习MATLAb编程的书籍，共有50道题目，没道题目都有详细的解释(This is a practice MATLAb programming books, a total of 50 questions, did not have a detailed explanation of the title track)

语音信号处理，对输入的语音信号进行分帧处理，短时傅立叶变换，最后画出语谱图(Speech signal processing, the input voice signal processing sub-frame)

建立Dirichlet过程贝塔混合模型进行聚类分析(build a beta Dirichlet Process beta mixture model for clustering)