dct1117Q

图像预处理 字符识别实例(I&II) 有助于处理验证码(图像预处理——字符识别实例(I&II))

为了提高通信系统的信息传输速率，人们提出了UWB通信系统，即Ultra-Wideband 通信系统。在UWB系统中，信号的带宽一般都在GHz的量级，这么宽的带宽造成了UWB系统和现有的通信系统频谱的重叠。为了降低对现有通信系统的影响，UWB信号的设计需要满足一定的频谱模板。如果一个信号的频谱基本满足频谱模板的规定（即在绝大部分频段内功率小于规定区间的上限），我们可以认定其为一个UWB信号。(In order to improve communication systems, information transmission rate of UWB communications systems have been proposed, namely, Ultra-Wideband communication systems. In the UWB system, the signal bandwidth will generally be in the order of GHz, caused such a wide bandwidth of UWB system and the existing communications system spectrum overlap. In order to reduce the impact of the existing communication systems, UWB signal design needs to meet certain spectral mask. If a signal spectrum can basically meet the spectral mask (that is, in most of the provisions of band power is less than the maximum range), we can assume it as a UWB signal.)

matlab字鱼香处理数字图像处理 ，边缘检测源代码，数鱼香处理数字图像处(matlab)

该SIMULINK程序描述的是有源滤波器(APF)挂载在电网后滤除了电网的谐波电流。(This demonstration illustrates the use of a shunt active harmonic filter (AHF) to minimize the harmonic content propagated to the source a non-linear load.)

说明：  KF的一道例题，包括源程序代码以及具体的解题过程(KF' s an example, including source code and the specific problem-solving process)

说明：  双凸透镜功能描述的Matlab程序，这是一个关于两个凸透镜成像的Matlab模拟程序，另一个为圆孔的成像模拟程序(Dual-lens functions described in the Matlab program, which is a two lens imaging on the Matlab simulation program, and the other for the hole imaging simulation program)

粒子群进化算法，标准的源代码程序和实例教程。(Evolutionary particle swarm algorithm, standard procedures and examples of source code tutorial.)

matlab example code 工具包(matlab example code toolkit)

一种基于MIMO的能够智能天线选择算法 MATLAB语言编写(A conpute of channel selection based on MIMO)

BP神经网络对2ask,2fsk,4fsk,2psk,4psk,gmsk六种信号的学习和训练。 (BP neural network 2ask, 2fsk, 4fsk, 2psk, 4psk. gmsk six signals in the learning and training.)