▍1. UnderstandinGPS
Understanding GPS, This pdf describes the basics behind GPS technologies. Readers will find useful information which can help in understanding GPS
Understanding GPS, This pdf describes the basics behind GPS technologies. Readers will find useful information which can help in understanding GPS
Distributed Sensor Networks part1
Basic theory and algorithms for convert binary to bcd oriented to microcontrollers
属于数学建模课件。对初学者了解数学有一定的帮助。(Belongs to mathematical modeling courseware. For beginners, there is a certain understanding of math help.)
说明: Tomcat 5的外文书目,作者:Vivek Chopra(Professional Apache Tomcat 5 is primarily targeted toward administrators. However, developers (especially those with additional responsibilities for Tomcat configuration, performance tuning, system security, or deployment architecture) will find this book extremely useful.)
说明: 电磁场与微波技术三本最重要的书之一,<正弦电磁场> 哈宁登著(Time-harmonic electromagnetic fields Roger F.Harrington)
说明: 如何编译uclinux内核,希望对读者有一定的帮助。(How to compile uclinux kernel, I hope the readers will certainly help.)
说明: SAP ABAP开发指南 全面介绍 ABAP 不可多得开发指导(This documentation describes how to write application programs within the three-tier client/server architecture of the R/3 System.)
在一定的頻率的方波中,調整高電平和低電平的占空比,即可實?。比如我們用低電平點亮一個 LED燈(In the square wave frequency, the adjustment of high and low duty cycle, you really?. For example, we use LED lights to light a low-level)
基于FFT的快速SAR分布目标回波模拟算法. 大面积分布目标的合成孔径雷达(SAR)回波模拟需要大量的运算,文中提出了一种合成孔径雷达回波模拟的快速算法,算法利用时域插值和FFTl’来缩减运算量,对于大面积目标回波模拟时,该算法有很高的效率。文中详细分析sinc函数插值所带来的误差以及补偿方法,并在次基础上提出了一种利用增采样插值方法,该方法以增加少量运算为代价,使得模拟精度的大幅度提高。文中比较了传统方法和基于FFTl’的快速SAR分布目标回波模拟算法的模拟结果,证明了这种快速算法确实行之有效。(The simulation of distributed targets is very important to the design of synthetic aperture radar(SAR)sys- tems.Since the end product is SAR images,the echo of SAR signals needs to be simulated and then processed form SAR images,an d the parameters needs to be measured and the perform ance of the images should be,an d then evaluated.The designing parameters of SAR could be adjusted to meet the requirement of users before developing SAR systems,specially in space—bome SAR systems.Th e simulation data is also needed during the developing an d debugging of a space—borne SAR real—time processor.Another purpose of simulation is to supply a great deal of simulation imag es to train image usors of space—bo rne SAR before it launch.)
window 7操作系统的系统服务项的详细介绍,想优化以下系统服务的可以看看(operating system window 7 A detailed description of services, would like to optimize the following system services can look at)
用Labview对信号进行曲线拟合,这样使得得出的结果更加的清晰、易懂。(Signal using Labview for curve fitting, which makes the results more clear and easy to understand.)
提出了一种自动构造特定领域本体的方法,该方法应用术语抽取和多重聚类技术。在术语抽取阶段,通过术语在专业语料与背景语料中出现概率的对比,采用LLR公式对术语进行评分,取得了更好的抽取效果。在层级关系发现过程中,采用上下文共现信息结合HowNet中词语的语义相似度,进行术语间相似度度量,力求获得术语间最合理的相关状况。同时改进了k-medoids聚类算法,更准确地发现术语的层级关系,进而构造出特定领域的本体。(This paper presents an approach to mining domain-dependent ontologies using term extraction and relationship discovery technology.There are two main innovations in the approach. One is extracting terms using log-likelihood ratio, which is based on the contrastive probabilityofterm occurrence in domain corpus and background corpus. The other is fusing together information from multiple knowledge sources as evidencesfor discovering particular semantic relationships among terms. In the experiment, traditional k-mediods algorithm is improved for multi-levelclustering. The approach to produce an ontology for the domain of computer science is applied and promising results are obtained.)
Rappaport版无线通信原理。改书对无线通信的关键技术MIMO技术做了非常详细的介绍和分析,具有非常强的实用性。(Rappaport version of the principle of wireless communications. Book to the key technology of wireless communications MIMO technology has done a very detailed description and analysis, with a very strong practical.)