Crazepony项目旨在为大学生/航模爱好者/创客提供可二次开发的迷你四轴飞行器原型。我们秉承开放，合作，分享的理念，致力将Crazepony打造成航模爱好者学习交流的软硬件平台。Crazepony是一个完全开源的项目，包括源代码，原理图，设计思路等，并且提供详尽的百科知识库。可以通过它学习四轴飞行器相关知识，也可以在上面进行二次开发，实现自己的创意。
The purpose of the crazepony project is to provide secondary development of mini four axis aircraft prototype for college students / model enthusiasts / makers. (2021-01-12, PDF, 16387KB, 下载0次)
以星地通信链路为例阐述了利用STK /Matlab 接口与Matlab 程序进行动态链路数据交互的联合仿真方法，通过大气吸收模型和雨衰模型等逼真星地信道的衰落情况，适当选择链路的约束参数，从而计算确定满足链路约束的卫星天线增益等关键参数的设计门限，可用于指导星上通信系统的设计，解决了传统链路计算只能用于通信系统设计结果验证的局限，为卫星通信系统设计提供了一个高效的辅助手段。
Taking the satellite ground communication link as an example, this paper expounds the use of STK / Matlab interface and MATLAB Through the atmospheric absorption model, rain attenuation model and other realistic satellite ground channel fading conditions, the constraint parameters of the link are appropriately selected, so as to calculate and determine the design threshold of satellite antenna gain and other key parameters that meet the link constraints. It can be used to guide the design of satellite communication system, and solve the problem that traditional link calculation can only be used for satellite ground channel The limitation of communication system design results verification provides an efficient auxiliary means for satellite communication system design. (2020-07-16, PDF, 213KB, 下载5次)
<图形程序开发人员指南>迈克尔·亚伯拉什的经典图形编程黑皮书是迈克尔以前的著作汇编语言和图形编程（包括来自于博士道博的日记他的“图形编程”栏）汇编。很多这本书的重点是分析和代码测试，以及性能优化。它还探讨许多末日和Quake的3-D游戏，和3-D图形的问题，例如纹理映射，隐面消除，等后面的技术。
Michael Abrash s classic Graphics Programming Black Book is a compilation of Michael s previous writings on assembly language and graphics programming (including his Graphics Programming column in Dr. Dobb s Journal). Much of the focus of this book is on profiling and code testing, as well as performance optimization. It also explores much of the technology behind the Doom and Quake 3-D games, and 3-D graphics problems such as texture mapping, hidden surface removal, and the like. (2016-04-03, PDF, 27400KB, 下载7次)
实现了基于功率倒置算法的 GPS 抗干扰实时系统，并且提出了一种低复杂度的实现算法。 运用 Xilinx 公司
的 Virtex-4 以及 TI 公司的 TMS320C6416T 硬件平台，采用双 FPGA+ 单 DSP 结构来实现整个算法。 实验结
果表明， GPS 信号经过实时抗干扰系统处理后，可以运用普通的接收机进行实时、精确的定位。该系统具有
兼容性好、精度高等优点。
Based on power inversion algorithm，a GPS real-time anti-jamming system composed of the Virtex-4 and
TMS320C6416T hardware platform has been finished. In addition， an improved method which is easy to
implement is also proposed. The algorithm is implemented on the architecture which is made up of double
FPGA+DSP. Experimental results show that the target position which can′t be found without anti-jamming will
be located precisely with ordinary receivers after the GPS signals with blanketing jamming have been passed
through our real-time anti-jamming system. Lots of advantages lies in this system such as：good compatibility，
accurate positioning etc. (2014-04-10, PDF, 329KB, 下载26次)
针对
１２８
维
ＳＩＦＴ
特
征向量，采用距离匹配和余弦相似度匹配相结合的测度方法，利用特征点方向一致性进一步降低误匹配率
．
实验结
果表明：改进算法对图像的缩放、旋转、光照、噪声和小尺度的视角变换均有较好的匹配效果
．
与原算法相比，在保
证匹配点数和匹配时间的基础上，改进算法对旋转、缩放、噪声模糊和光照变换的误匹配率平均降低
１０％～２０％
，
对于小尺度的视角变换，误匹配率平均降低
５％．
For 128-dimensional SIFT feature vectors, using distance matching and cosine similarity measure combining matching method using feature points consistent direction to further reduce false match rate. The experimental results showed that: improved algorithm for image scaling, rotation, light, noise, and small-scale perspective transformation have better matching results. Compared with the original algorithm, while ensuring match points and matching time, based on the improved algorithm for rotation, scaling, noise, blur and light transform the average rate mismatch is reduced by 10 to 20 , for small-scale perspective transformation, mismatch average rate reduction of 5 . (2013-11-11, PDF, 390KB, 下载7次)
HackRF，无线电极客的盛宴。是每个软件无线电（SDR）爱好者的福音。软件无线电（SDR）既软件定义网络（SDN）后的有一个金矿。欢迎大家下载交流。
HackRF, radio geeks feast. Is that each software radio (SDR) lovers of the Gospel. Software Defined Radio (SDR) both software defined network (SDN) after a gold mine. Welcome everyone to download. (2013-08-28, PDF, 4510KB, 下载53次)
协同视频会议系统解决方案
视频会议系统由服务器端软件、客户端软件组成。
视频会议系统是纯软件的解决方案，可运行于互联网、专网、VPN 等多种类型的网
络中，支持B/S 和C/S 架构，方便与企业网站、OA、ERP 等系统无缝整合；支持多台服
务器级联，均衡系统带宽的使用；支持更多用户并发，实现运营级视频会议的应用；实
现远程协同办公、多方视频会议等应用，方便用户部署和使用；除支持桌面终端和大型
会场终端外，还支持VOIP 和标准协议的硬件终端接入，可满足大型会场视频会议、个
人商务视频会议等多种形式会议需求。
Collaborative video conferencing solutions (2011-11-30, PDF, 4123KB, 下载15次)
LUA的目标是成为一个很容易嵌入其它语言中使用的语言。大多数程序员也认为它的确做到了这一点。
很多应用程序使用LUA作为自己的嵌入式脚本语言，以此来实现可配置性、可扩展性。这其中包括魔兽世界、博德之门等。
LUA' s goal is to become a very easy to embed other languages in the language. Most programmers think it does do this. Many applications use as their embedded LUA scripting language, in order to achieve the configurability, scalability. This includes World of Warcraft, Baldur' s Gate and so on. (2011-08-18, PDF, 1304KB, 下载2次)
如何合理地确定各评价指标的主观权重是综合评价理论和实际应用中的一个关键问题。为此提出了利用心理
学中的配对比较法来确定各评价指标权重的新思路。本文给出了用配对比较法计算主观权重的原理和算法，并用C 语言编
写程序对教学效果评价指标体系中各指标的权重进行进行计算，取得了较好的效果。该方法原理清楚，步骤简单，计算结
果较为客观，在综合评价中具有很好的推广应用价值。
How to reasonably determine the subjective weight coefficients of every factor is a key problem in comprehensive
assessment.One new approach of paired comparison is brought forward to decide the weight coefficients of every assessment
factor.The theory,method and procedure are discussed.And the new approach is easy to understand and very simple to be
implemented.The result is rather objective,and shows great potential in comprehensive assessment. (2011-03-28, PDF, 616KB, 下载5次)
在MATLAB中实现动画效果
摘要: MATLAB是 MathWorks公司开发的新一代的科学与工程计算软件, 已经成为全球应用最广泛最流行的软件之一。随着该软
件应用的不断普及, 用户对其动画功能的需求也在不断增加。该文主要介绍了在 MATLAB 中实现程序动画、 Flash 动画和影片动画等效
果的方法。具有较强的针对性、 代表性和实用性。
To achieve animation effects in the summary of MATLAB: MATLAB is a MathWorks has developed a new generation of scientific and engineering computing software, has become the world' s most widely used one of the most popular software. With the growing popularity of the software applications, user demand for its animation capabilities are constantly increasing. This paper introduces the program is implemented in MATLAB animation, Flash animation and video animation and other effects of the method. Highly targeted, representative and practical. (2010-12-25, PDF, 232KB, 下载4次)
国外Handbook in OR & MS机构最新的关于城市交通信号控制研究手册，包括：研究现状，主要研究方法、主要研究城果及发展趋势综述，涉及领域包括城市路网交通控制和高速公路的交通控制。对从事交通控制邻域的学者具有很高参考价值
Abroad Handbook in OR & MS organizations the latest research on the Urban Traffic Signal Control Handbook, including: research status, the main research method, the main research results and development trend of the city review in the areas of urban network traffic control and highway traffic control. Traffic control in the neighborhood of the scholars have a high reference value (2010-10-15, PDF, 594KB, 下载20次)
您现在阅读的是 Quartus II 简介手册。 Altera® Quartus® II 设计软件是适合
单芯片可编程系统 (SOPC) 的最全面的设计环境。 如果您以前用过
MAX+PLUS® II 软件、其它设计软件或 ASIC 设计软件，并且准备改用
Quartus II 软件，或如果您对 Quartus II 软件有了一些了解但想进一步了解
它的功能，那么本手册非常适合您。
You are reading the Quartus II brochure. Altera ® Quartus ® II design software is suitable for
Single-Chip Programmable System (SOPC) the most comprehensive design environment. If you ve used
MAX+ PLUS ® II software, ASIC design software or other design software, and is prepared to use
Quartus II software, or if you have some understanding of Quartus II software, but would like to learn more about
Its function, then this manual is for you. (2010-05-17, PDF, 29KB, 下载25次)
:在同一受试者,针刺不同穴位可引起相同部位脑功能区激活,不同人针刺相同穴位激活的脑功能区有一定差异,针刺效
果可能并非通过单一脑功能区,而是通过有功能联系的多个脑功能区所形成的一个复杂的流动性网络的相互作用而实现的。
: In the same subjects, acupuncture points can cause the same parts in different functional areas of brain activation, different people the same acupuncture points to activate certain areas of brain function differences in effects of acupuncture may not be through a single brain functional areas, but rather through a functional linkages of multiple brain functional area formed by a complex interplay of mobile network implementation. (2009-12-19, PDF, 475KB, 下载6次)
您现在阅读的是 Quartus II 简介手册。 Altera® Quartus® II 设计软件是适合
单芯片可编程系统 (SOPC) 的最全面的设计环境。 如果您以前用过
MAX+PLUS® II 软件、其它设计软件或 ASIC 设计软件，并且准备改用
Quartus II 软件，或如果您对 Quartus II 软件有了一些了解但想进一步了解
它的功能，那么本手册非常适合您。
You are now reading the Quartus II brochure. Altera ® Quartus ® II design software is suitable for single-chip programmable system (SOPC) the most comprehensive design environment. If you have previously used the MAX+ PLUS ® II software, ASIC design software or other design software, and is prepared to use Quartus II software, or if you have some idea of Quartus II software, but would like to learn more about its capabilities, then this manual is for you. (2009-11-08, PDF, 3024KB, 下载10次)
在本文中，我們首先實作了 一個針對壓縮視訊（像是 H.264/AVC）之畫面解析度 改善
的方法。接著，我們分析這個方法的模擬結果。
In this thesis, we first implement a spatial resolution enhancement algorithm for H.264/AVC
compressed videos. Based on the analysis of the simulation results, we identify a few
shortcomings of this algorithm, like some visual artifacts in the enhanced videos and some
problems caused by scene change and fast motion. Then, we propose two methods to suppress
these artifacts, including adding a median regularization term in the spatial-domain and using a
median filter in the temporal domain. We also propose two methods, a global method and a
local method, to overcome the scene change and fast motion problems. With these
modifications, the artifacts and problems are suppressed significantly. (2009-04-22, PDF, 1520KB, 下载11次)
：介绍一种仅使用配置空间设计PCI板卡的方法，使扳卡设计者能比较客易从ISA过渡到
PCI设计，该方法基于FPGA／CPLD，在最小设计模式下，仅使用18个引脚就能实现简易的眦功能
卡。
: A configuration space using only PCI card design approach so that designers can compare cards plate off easy transition from ISA to PCI design, the method is based on FPGA/CPLD, the minimum design mode, only use 18-pin canthus can realize simple function card. (2008-06-08, PDF, 107KB, 下载45次)
SCATTERING, RADIATION AND PROPAGATION OVER TWO-DIMENSIONAL RANDOM SURFACE,小仓老师关于随机泛函博散射的专著，除在日本京都大学作为教科书资料外，此文章作为一个章节撰写在1996年的PIER(电磁研究进展)14的第三章。
SCATTERING, RADIATION AND PROPAGATION OVER TWO-DIMENSIONAL RANDOM SURFACE, Kokura teachers Bo functionals on random scattering of monographs, with the exception of Kyoto University in Japan as a textbook of information, this article as a chapter written in 1996 PIER (Electromagnetic Research) 14 Chapter III. (2008-05-30, PDF, 6130KB, 下载8次)
ogura(小仓)老师在京都大学讲授波散射的资料，从基尔霍夫近似到微扰法，最后提到了他的随机泛函的方法，小仓老师是随即泛函用于博散射的鼻祖，电磁界的知名人士。
ogura (Kokura) teachers to teach at Kyoto University-wave scattering data, from the Kirchhoff approximation to the perturbation method, and finally referred to him functionals of stochastic methods, teachers are immediately kokura functionals for the originator Bo scattering , electromagnetic sector celebrities. (2008-05-30, PDF, 316KB, 下载60次)
提 出了一种 网络 化嵌 入 式 数 控 系统 ， 系统 采 用 A RM 4 - D S P结 构 ， 实现 了数 控 系统 的 小型 化 、 网络 化 、 智能化 和 集成 化 。详 细介 绍 了嵌入 式数 控 系统 内 CNC主控 单元 与 伺 服 驱动 及 I ／0逻辑 控 制 等各 单
元 间的通信 、 车 间级 工 业 以太 网络 的通信 和 i n t r a n e t ／ I n t e r n e t网络 通信 ， 并给 出 了关键 实现技 术。
A network of embedded numerical control system, system A RM 4- DSP structure and realize a small-scale numerical control system, network-based, intelligent and integrated. Details of embedded CNC system CNC control unit and servo drives and I/0 logic control unit and other communication, workshop-level industrial Ethernet communications and intranet/I nternet network communication, and gives a key technology. (2008-04-10, PDF, 247KB, 下载60次)
電子地圖搭配全球定位系統所組合的汽車導航模式，有越來越熱門的趨勢，藉全球24顆衛星做座標定位，配合GIS電子地圖即可得知汽車所在方位。透過廣播電台、行動電話GSM通訊系統，可提供各地路況即時資訊及目的地精確位置，使民眾選擇最快、最短路徑，減少堵車機率。
而目前由電子地圖搭配全球定位系統的地理定位產品約可分為汽車導航系統、行車追蹤器及記錄器等三種；而這些產品當中導航系統是為駕駛人設計的服務，使用者以接收器收到衛星訊號，再接上筆記型電腦或VCD播放螢幕，即可得知所在位置。
err (2007-11-11, PDF, 1098KB, 下载137次)