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Ultra-Wideband 通信系统
- 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, informatio
UsingTICAN2.0Bmodule
- 采用TI公司内嵌CAN 2.0B模块的数字信号处理器TMS320LF2407A作为汽车计算机控制系统中的主控制器并兼作网关，构建高低速CAN总线通信控制网络，实现了全部节点之间的数据共享以及相互之间的协同工作，并可在不同节点间实现高效数据传输。试验结果表明总线利用率较高，系统响应速度较快-Using TI embedded CAN 2.0B module, digital signal processor TMS320LF2407A computer control system of a ve
DSP
- 。本文针对三电平高压变频器控制要 求的特点，设计了基于DSP 和FPGA 的控制电路。利用DSP 进行高速浮点计算，满足实时控制的要求；FPGA 并行执行 程序，实现了多路触发信号的同时控制，而且由于采用了硬 件电路完成计算，提高了控制系统的可靠性-. In this paper, three-level voltage inverter control requirements of the features, design and FPGA-based DSP control
IF_RF
- 在无线通讯系统中，根据频率，可以分成射频（PF：Radio Frequency）、中频（IF：Intermediate Frequency）和基带（Base Band）信号-In the wireless communication system, according to frequency, can be divided into radio frequency (PF: Radio Frequency), IF (IF: Intermediate Frequency) and baseba
Signal
- 分析了在超宽带通信系统中的扩频干扰，并用两种通用的调制技术实现了对提出的抗干扰方法的仿真-he ultra wideband (UWB) interference to direct sequence spread spectrum (DSSS) receiver is analyzed. Two popular UWB modulation schemes, the time hopping pulse position modulat
Radar-MATLAB
- 本书为英文版，讲解雷达系统设计和雷达系统信号处理的应用，是一本实用的书-This book is in English, to explain the radar system design and radar signal processing applications, is a practical book
danpianjitongxinfaseji
- 我所做的单片机串行通信发射机主要在实验室完成,参考有关的书籍和资料，个人完成电路的设计、焊接、检查、调试，再根据自己的硬件和通信协议用汇编语言编写发射和显示程序，然后加电调试，最终达到准确无误的发射和显示。在这过程中需要选择适当的元件，合理的电路图扎实的焊接技术，基本的故障排除和纠正能力，会使用基本的仪器对硬件进行调试，会熟练的运用汇编语言编写程序，会用相关的软件对自己的程序进行翻译，并烧进芯片中，要与对方接收机统一通信协议，要耐心的反复检查、修改和调试，直到达到预期目的。-Abstract:
lte-phy
- Downlink Spec. – Downlink Structure: FDD, TDD – Initial Access • Cell Search (PSC, SSC, RS) • System Information Receive (PBCH, PCFICH, PDCCH) • Random Access – Downlink data transmission: PHICH, PDSCH R
Rayleigh-Mie-lidar-
- 本文介绍了用来测量对流层温度垂直分布的基于高光谱分辨率雷达技术的瑞利-米激光雷达系统（激光是对人眼安全的355nm波长的紫外线）。在该系统中，用两个法布里-珀罗标准具滤波器对影响大气温度的两个瑞利信号进行过滤。这些滤波器放在瑞利散射频谱的同一侧，并带有双端口光学输出通道。这种配置对米氏散射能获得较高的抑制比以及合理的瑞利散射透光率。米氏信号用第三个位于激光频率中间位置的法布里-珀罗标准具滤波器进行检测。这三个滤波器的参数是经过数值计算优化了的。实验结果表明，对于这两个瑞利通道都能实现-45dB的
3
- 由于载体对象的高动态特点，其上装载的GNSS 接收机在捕获信号和跟踪定位上面临很大的挑战，因此致使 GNSS/INS 组合系统的定位效果受到严重影响。本论文以 MEMS IMU/GNSS 超紧组合为研究目标，并以 MEMS IMU 环路辅助的GNSS/INS 紧组合技术为研究重点，深入研究了 MEMS IMU 辅助的 GNSS 信号捕获、MEMS IMU 辅助的 GNSS 信号跟踪、MEMS IMU 辅助的 GNSS/INS 紧组合导航定位算法和基于矢量跟踪结构的 GNSS/INS 超紧组
Fuzzy-Adaptive-PI-controller-for-VSC-HVDC
- Focusing on the passive network, this paper analyzes the discrete mathematical model and its control strategy of the passive terminal of the VSC-HVDC system on the basis of the α-β frame of axes. The method of the functioning-fuzzy-subset inf
1
- 超紧耦合是 GPS/INS 组合导航系统的最新研究方向，它采用 INS 测得的载体动态信息辅助 GPS 接收机跟踪环 路，消除卫星信号中由于载体与卫星之间相对运动所产生的频率偏移，提高接收机在高动态环境下载波跟踪性能，同时还 可以压缩带宽，有效增强接收机抗干扰性能。介绍 GPS/INS 超紧耦合技术，给出 INS 辅助 GPS 载波跟踪环路结构图和相应 的数学模型，分析 INS 辅助 GPS 跟踪环路在动态环境下的动态残留及其对环路相位误差的影响，并进行了模型仿真，最后 对仿真结
signal-and-system
- signal and system principal
17vol2no2
- The objective of this study is improving channel estimation accuracy in OFDM system because channel state information is required for signal detection at receiver and its accuracy affects the overall performance of system and it is essential to impro
Wiener-Filtering-for-Speech-Enhancement-in-Modula
- Normally speech signals are contaminated with noise and interference that reduces the intelligibility of speech during communication. In order to make speech signals e ective and useful, they need to be enhanced from the noisy speech signal. In s
DTW_myths
- Detailed descr iption about Dynamic time warping, which is a popular algorithm in audio signal processing and recognition. In this documents, basic DTW algorithm is discussed and a few important charactors of the algorithm is pointed out. The common
Speed_SRM
- Filtering and system identification are powerful techniques for building models of complex systems in communications, signal processing, control, and other engineering disciplines.
Advanced-ESM-AOA-and-Location-Techniques
- The paper further discusses an advanced passive emitter location solution for a single platform having an ESM system which measures only azimuth AOA, frequency, and signal amplitude. The solution combines the best features and strengths of th
00554481
- he fabrication and performaince of a semiconductor optical amplifier for wavelength conversion in subcarrier multiplexed system is described. The amplifier is of the buried facet design and has p o ~ a r ~ ~ a ~anido nre flectivity gain ripple
meigou
- 美国海军将升级基于GPS信号的_精确进场与着舰系统_一片很不错的文章 了解美国当下的技术研究-The U.S. navy will upgrade _ precise approach based on the GPS signal and the ship system _ a good article To understand the present technical research in the United States