problemandanswer

说明：  通信系统仿真中的滤波器的设计的一个简单的小程序(Communication System Simulation in the design of the filter a simple applet)

这是一个有关于免疫遗传算法matlab 程序(This is an on immune genetic algorithm matlab program)

可以用来识别包装系统的总体参数以及原响应函数的初始相位和振幅(Packaging systems can be used to identify the general parameters as well as the original response function of the initial phase and amplitude)

功放模型仿真，经过测试，数据还是比较准确的(Amplifier model simulation, tested, data is more accurate)

运用误差载入法提高抗干扰过程的鲁棒性,应用于GPS抗干扰(Error loading method to improve the use of anti-jamming process robustness)

对三种雷达信号调制类型的识别，包括单载频 线性调频和相位编码，并做时频分析(The identification of three kinds of radar signal modulation, including single carrier linear frequency modulation and phase encoding, and time-frequency analysis)

模糊自整定PID控制器设计，基于MATLAB仿真实例，附上代码。(Fuzzy pid control example, based on MATLAB,it changs its Kp,Ki,Kd automatically.)

关于mathematica的国外使用教程 关于mathematica的国外使用教程(course for mathematica)

摘　要 文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。 简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。 介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。 JPEG标准的特点是离散余弦变换。 比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。 (Abstract Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results. Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method. JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding. JPEG standard is characterized by discrete )

该代码实现了图像的滤波处理，这段代码给出了三种滤波矩阵，包括图像平滑(低通滤波器)、图像边缘提取(高通滤波器)等。用户下载后可以根据自己需要修改滤波矩阵和参数值，以便实现特殊的功能。为了形象的说明滤波效果，代码执行后可以看到滤波前后滤波后的对比图像。 (The code of the image filter processing, the code shows the three filter matrix, including the smoothing (low pass filter), image edge detection (high-pass filter) and so on. Users can download their own need to modify the filter matrix and the parameter values in order to achieve a specific function. Filtering effect to the image description, code execution before and after filtering can be seen after comparison of the filtered images.)