Description: 介绍了JPEG图像压缩算法,并在MATLAB 数学分析工具环境下从实验角度出发,
较为直观地探讨了DCT 在JPEG图像压缩中的应用。仿真实验表明,用MATLAB 来实现离散余弦
变换的图像压缩,具有方法简单、速度快、误差小的优点,大大提高了图像压缩的效率和精度。
李秀敏1 , 万里青1 , 周拥军2
(1. 河南科技大学电子信息工程学院,河南洛阳 471003 2. 中航一集团洛阳电光设备研究所,河南洛阳 471009)-introduced the JPEG image compression algorithm, MATLAB and mathematical analysis tool environment from experimental perspective, more directly on the DCT in JPEG image compression applications. Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy. LI Xiu-1, Green 1 Wanli, Zhou Yongjun 2 (1. Henan University of Science and Technology of Electronics and Information Engineering College, Luoyang, Henan 471003 2. A350 Luoyang Electro-Optic Equipment Institute, Luoyang, Henan 471009) Platform: |
Size: 109257 |
Author:adnsid |
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Description: 介绍了JPEG图像压缩算法,并在MATLAB 数学分析工具环境下从实验角度出发,
较为直观地探讨了DCT 在JPEG图像压缩中的应用。仿真实验表明,用MATLAB 来实现离散余弦
变换的图像压缩,具有方法简单、速度快、误差小的优点,大大提高了图像压缩的效率和精度。
李秀敏1 , 万里青1 , 周拥军2
(1. 河南科技大学电子信息工程学院,河南洛阳 471003 2. 中航一集团洛阳电光设备研究所,河南洛阳 471009)-introduced the JPEG image compression algorithm, MATLAB and mathematical analysis tool environment from experimental perspective, more directly on the DCT in JPEG image compression applications. Simulation results show that the use MATLAB to achieve discrete cosine transform image compression method is simple, fast, the advantages of a small error, which has greatly enhanced the efficiency of image compression and accuracy. LI Xiu-1, Green 1 Wanli, Zhou Yongjun 2 (1. Henan University of Science and Technology of Electronics and Information Engineering College, Luoyang, Henan 471003 2. A350 Luoyang Electro-Optic Equipment Institute, Luoyang, Henan 471009) Platform: |
Size: 108544 |
Author:adnsid |
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Description: 主要是研究光纤通信系统中的克服PMD效应的电域均衡技术，构建电域均衡器的模型并进行仿真实验。找到补偿PMD效应的较理想的电域均衡器结构。-Is to study, fiber-optic communication systems to overcome the effects of PMD electrical domain equalization technology, building a power domain equalizer model and simulation experiments. PMD compensation effect to find a better balance of power domain structure. Platform: |
Size: 2048 |
Author:Lee |
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Description: 基于ARMA（2）模型的光纤陀螺建模及kalma滤波算法-Based on the ARMA (2) model of the fiber optic gyroscope Modeling and Kalma filtering algorithm Platform: |
Size: 2048 |
Author:吕佳 |
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Description: 光通信中归零型（占空比可调）差分相位调制信号建模与仿真分析-Optical Communication zero type (duty cycle adjustable) differential phase modulation signal modeling and simulation analysis Platform: |
Size: 9216 |
Author: |
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Description: 利用时域有限差分法模拟二维光子晶体光纤中光的传播-The use of FDTD simulation of two-dimensional photonic crystal fiber-optic transmission of light Platform: |
Size: 5120 |
Author:chen wang |
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Description: 光纤陀螺的四位置寻北方案
通过文章展现四位置的仿真-The four position of the fiber optic gyroscope north-seeking program through the article to show the four position of the simulation Platform: |
Size: 126976 |
Author:sunbo |
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Description: 高功率瞬态电场的测试是电磁环境效应评估与防护研究领域的难点。笔者基于有源电光调制法，设
计了一种高功率瞬态电场传感器。通过建立简化的等效电路模型，并借助CST 微波工作室对该传感器的结
构建模仿真，分别从频域和时域分析了接收天线负载对传感器接收特性的影响，并得到了一致的结果。结果
表明：接收天线采用单极子天线，负载采用低阻时响应信号为被测电场的微分信号，采用高阻时响应电压与
被测电场场强成正比，通过改变负载电容取值可以控制传感器量程。-High power transient electric field testing is electromagnetic environment effects assessment and protection of areas of difficulty. The author based on active electro-optic modulation method, the design of a high power transient electric field sensors. Through the establishment of a simplified equivalent circuit model, and with the CST MICROWAVE STUDIO sensor structure modeling and simulation, respectively, from the frequency domain and time domain analysis of the receiving antenna receives the load characteristics of the sensor, and get consistent results. The results showed that: the receiving antenna using monopole antennas, low-impedance load using the response signal is a differential signal measured electric field, using high impedance response voltage proportional to the measured electric field strength, by changing the value of the load capacitance sensor can be controlled range. Platform: |
Size: 305152 |
Author:张毛毛 |
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Description: simulation of optic fiber link budget analysis is to feed input as attenuation loss, connection loss , system margin, transmitted power and length of the fiber Platform: |
Size: 10240 |
Author:adhi |
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Description: 利用MATLAB求解受激布里渊散射的三波耦合方程，从实现全分布式光纤传感系统的仿真模拟！-Using MATLAB to solve the stimulated Brillouin scattering of three-wave coupling equations, from the implementation of fully distributed fiber optic sensing system simulation! Platform: |
Size: 2048 |
Author:张有迪 |
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Description: 这是一本关于光纤通信系统设计的书，以optisystem为基础对光通信的仿真实验。-This is a book about the fiber optic communication system design to optisystem basis for the simulation of optical communication. Platform: |
Size: 1312768 |
Author:陈 |
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Description: We have proposed a digitally implemented QPSK system for Free-Space Optics (FSO) systems for future satellite missions. We have used a Laser source of 1550nm wavelength and data rate of 2.5Gbps.The system consists of a modulating and a demodulating block and an advantage of filters added to improve the performance and optimize errors like noise. The best suited modulator for FSO is Mach-Zehnder modulator which is tuned for high performance. The LiNB03 demodulator demodulates the signal which in turn passed to a filter to attenuate the demodulated output and then through an amplifier to increase the signal strength. Digital approach for implementation of QPSK Modulation is attempted here and compared with existing systems. Simulation and characterization is done to freeze design parameters. The system mainly concentrates on parameter like performance, security, minimum size and cost saving which will be the future of satellite communications. Platform: |
Size: 447488 |
Author:muhand |
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Description: OptiSystem 是一套创新的光通信系统仿真软件，它集设计、测试和优化各种类型宽带光网络物理层的虚拟光连接等功能于一身，从长距离通讯系统到LANS和MANS都使用。一个基于实际光纤通讯系统模型的系统级模拟器，OptiSystem具有强大的模拟环境和真实的器件和系统的分级定义。它的性能可以通过附加的用户器件库和完整的界面进行扩展，而成为一系列广泛使用的工具。-OptiSystem is a set of innovative optical communication system simulation software, it set design, testing and optimization of various types of broadband optical network physical layer of virtual optical connection and other functions in one, a long distance communication system to LANS and MANS are used. A system level simulator based on actual fiber optic communication system model, OptiSystem has a strong simulation environment and a hierarchical definition of real devices and systems. Its performance can be extended by the addition of the user device library and the complete interface, and become a series of widely used tools. Platform: |
Size: 876544 |
Author:卓 |
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Description: FullWAVE™ simulation tool employs the finite-difference time-domain (FDTD) method to perform a full-vector simulation of photonic structures. It is a highly sophisticated tool for studying the propagation of light in a wide variety of photonic structures, including integrated and fiber-optic waveguide devices, as well as circuits and nanophotonic devices such as photonic crystals. FullWAVE s award-winning, innovative design and feature set has made it the market leader among optical device simulation tools.-FullWAVE ™ simulation tool employs the finite-difference time-domain (FDTD) method to perform a full-vector simulation of photonic structures. It is a highly sophisticated tool for studying the propagation of light in a wide variety of photonic structures, including integrated and fiber-optic waveguide devices, as well as circuits and nanophotonic devices such as photonic crystals. FullWAVE' s award-winning, innovative design and feature set has made it the market leader among optical device simulation tools. Platform: |
Size: 1738752 |
Author:gao |
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Description: 光纤陀螺输出误差的allan方差分析，使用的matlab仿真软件以及实际陀螺采样的数据进行分析。详细分析了5个误差的大小及其拟合曲线-FOG-Allan variance analysis of fiber optic gyro output error, the use of matlab simulation software and the actual gyro sampling data for analysis. The size of five errors and their fitting curve-FOG are analyzed in detail Platform: |
Size: 47683584 |
Author:我爱徐 |
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