sand

详细讲述了直接序列扩频差分锁相环的文章，包含具体的算法结构，并附有仿真结果。(A novel differentially coherent delay-locked loop(DCDLL) for accurate code tracking is proposed for direct sequence spread spectrum systems. Due to the use of the differential decoder and exactly one correlator, the proposed scheme avoids the problems of gain imbalance. The tracking error variance is derived by linear analysis. When the proposed DCDLL scheme is applied in ranging with additive white Gaussian noise (AWGN) channel, the performance of the proposed DCDLL scheme is about 1.4 dB better than that of one-correlator tau–dither loop (TDL), and near that of noncoherent DLL.)

this is about viterbi

用Matlab对图像、声音信号在时域及频域进行分析及其应用(如小波变换及其应用等)，将近100个源代码含。(many analyising methods and its application of iamge and audio signal processing in time and frequency domain,such as wavelet and it s application, including approximately 100 source codes.)

相干与非相干成像系统的比较。复习光学传递函数OTF的概念，以及该函数与相干传递函数CTF的关系。用OTF完成单透镜系统成像的计算。(The comparison of coherent and incoherent imaging system.Review the concept of OTF, optical transfer function and the function relations with CTF coherent transfer function.Complete the single lens imaging system with OTF calculation.)

使用matlab进行编程实现卡尔曼滤波器(Kalman filter matlab programming)

基于Matlab的八度音阶发音演奏程序，包括9个源文件，七个音阶，一个频率调制，一个完成结果(Matlab based on the pronunciation of playing octaves procedures, including nine source files, seven scale, a frequency modulation, the results of a completed)

这是基于PCA的人脸识别代码,识别率达到88.5 ,比较理想,希望对大家有所帮助.(This is a PCA-based face recognition code, the recognition rate of 88.5 , ideal, we want to help.)

这是篇关于左手材料的PPT，比较简单，适合于刚入门的人(This the chapter on the left hand material PPT, relatively simple and suitable for people who just look at the portal)

粒子群算法 最初版本，输入函数就可，fitness为目标函数(The initial version of the particle swarm algorithm, the input function can be objective function, fitness)

基于自适应滤波的语音增强和噪声消除.PDF(Adaptive filtering based voice enhancement and noise cancellation. PDF)