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原创 (一)QML加载离线地图+标记坐标点

QML加载离线地图+标记坐标点

2023-11-11 19:25:38 590 1

原创 win10 QT failure attempt to write a readonly database

win10 QT无法写sqlite3 DB文件

2023-09-16 20:17:08 291 1

原创 Dantjig标号算法的实现

说明:t(ai )表示从a1 (起始点)到ai 的最小开销,Ai 表示第i次寻路后已经标记的点的集合,其中共有i个元素,且对1j )。对每一个Ai 中的aj ,其临近点的集合为N(aj )。w(aj ak )表示aj 到ak 的权。Ti 表示第i次寻路的最短路径集合。算法的步骤如下: 从a1 点出发,则t(a1 )=0,A1 ={a1 },T1 ={空集};若已经得

2020-08-23 17:02:48 3771 1

原创 OMAP3EVM板从SD卡启动的方法

我的板子一拿下来ramdisk和NAND就被一个师弟和一个师妹擦除了,所以拿到板子后还没有看到启动起来过。在网上查了一下,可以用SD卡启动,方法总结如下:注:关于启动过程及步骤还可以参考另一篇稍微详细点的文档《ICETEK-OMAP3530-Mini使用手册》,mini板与evm板差别较小。一、格式化SD卡,将SD卡分成FAT32+EXT3两个分区;A)按照http://blog.

2011-11-03 12:08:19 3005

原创 Qt4中使用C代码

Qt4使用g++来编译文件,所以不能直接使用C代码,而需要先将已有的C代码用gcc编译成库文件,然后在Qt4中引用该库文件。库文件的编译方法可以参考文献http://blog.csdn.net/yalexiaoqiang/article/details/5540459,但是该文没

2011-09-17 12:26:00 757

原创 在Qt creator/designer中安装Qwt6.0(Ubuntu)

1、使用Ubuntu的Software Center安装Qt creator;2、下载Qwt6.0,http://sourceforge.net/projects/qwt/;并将其存放到/opt/下面;3、按照User Guide的说明安装Qwt6.0,http://qw

2011-09-13 12:12:22 4078 6

转载 VS2008中自定义C++工程模板与修改新建文件默认编码的办法

原文:http://blog.csdn.net/vagrxie一、    需求网上讲 VS (以下 VS 均特指 VS2008 )自定义模板的不少,不过大部分都是讲 C# 或者 Web 开发的,什么 export template 的,都不适合 C++ 工程,由于 MS 的确是减弱了对 C++ 的支持,(这点没有人否认吧?)所以在 VS 中 C++ 总是被遗忘在那个没有人理睬的角落,所

2011-06-05 15:34:00 639

转载 玩转SourceInsight语言定义——让你的sourceinsight也能编辑matlab程序

<br />原文地址:玩转SourceInsight语言定义——让你的sourceinsight也能编辑matlab程序<br />下载到MATLAB.CLF,然后打开SoureInsight,在【Preferences】的【Languages】选项中,<br />选中【Import】项,将MATLAB.CLF导入就可以了。(如果出现不能导入*.m文件的情况,则在<br />【Options】下面的【Document Options】里面,找到【Add Type】,然后输入Matlab M-file<br

2011-03-23 13:26:00 6046 3

原创 ubuntu eclipse C/C++环境的安装

将eclipse C/C++环境从官网上下载下来,直接解压到/opt/下面,然后在/usr/share/applications/下面创建一个eclipse.desktop快捷方式即可,其中的代码如下:[Desktop Entry]Categories=Development;IDE;Encoding=UTF-8Exec=/opt/eclipse/eclipseName=EclipseGenericName=application/x-designerIcon=/opt/ecli

2010-09-21 09:41:00 671

原创 GPS长数据捕获时的C/A码相位漂移

GPS信号长数据捕获C/A码相位不一致的问题  在生成了固定C/A码相位(固定速度、加速度为0m/s2、加加速度为0m/s3)的较长时间的仿真数据后,用来做多次捕获实验。此时会发现,当捕获的次数多了之后会出现C/A码相位的递增现象。当然除了程序可能出现的各种原因以外,还可以做如下解释:由于采样频率不能为C/A码速率的整数倍,所以对信号进行采样的过程中会出现样本边界模糊的问题,即正常情况下应该是

2010-04-21 21:20:00 2770

原创 关于ADC量化

    我们在做数字信号处理的时候都会遇到ADC,所以了解ADC对信号的处理方式对我们理解数字信号的处理也很有帮助。因为我还没有做过硬件ADC的配置,所以在这里所讲的是用代码来仿真ADC的工作过程。    在接收到信号后,一般将信号表示为r=s+n,其中s为发送信号,n为噪声。如果信号的功率远小于噪声的功率,则按噪声的概率分布来近似;反之则用信号的分布来近似。通常假设n~N(0,delta2)

2010-03-25 18:20:00 6041

原创 Omap - SDK和工具链的安装&配置

 OMAP的开发目前还没有集成开发环境,所以需要自己去下载其开发套件,然后自己搭建软件环境。所以过程可能会比较烦琐但不会复杂,可以参考文献DVSDK_INSTALL_DIR/PSP_SDK_INSTALL_DIR/docs/GettingStarted.pdf。[1].  在TI网站上下载DVSDK开发套件,并安装。下载下来的时候是.bin的,如果不能直接安装则需要增加文件的执行权限。我的

2010-03-12 11:11:00 1698

原创 IQmath library在Davinci/Omap框架下的使用探讨

              在CCS下面写C代码的时候,一般不会考虑定点DSP是怎么实现浮点运算的。但实际上这是一个比较严重的问题。在DSP芯片上进行浮点运算有两种实现方法:硬浮点和软浮点。顾名思义,硬浮点是通过协处理器来实现浮点运算;软浮点就是通过代码或编译器来模拟浮点运算。当然前者的速度会快些,后者则更经济。在CCS上做开发的时候,编译器自动包含了fastRTS库,其中就提供了基本的浮点运

2010-03-07 00:25:00 1756 2

转载 Extending data structures in xDM

http://wiki.davincidsp.com/index.php?title=Extending_data_structures_in_xDM 这篇文章有的地方比xDM user guide讲得细致些。

2010-03-06 21:25:00 483

转载 Getting started with Davinci

         对于一个新手来说,刚接触到Davinci时会无从下手。因为Davinci开始了一种新的硬件结构,从而开始了ARM+DSP开发模式。Making nonsence的话就不多说了,下面的一篇文章来自TI http://focus.ti.com.cn/cn/general/docs/gencontent.tsp?contentId=61575>,希望会对大家有所帮助。 

2010-03-06 20:52:00 1248

原创 Ubuntu9.10下安装source navigator

       在Ubuntu下面看代码不是很方便,有网上找了一些有说明code analysis工具的文章,主要介绍了kscope/lxr/sourcnav。本来想装一个kscope,但听师兄说有点复杂而且好像有些库需要自己去找来编译进去,我是喜欢简单的,所以直接就把kscope pass了。然后看了一下LXR的安装,也很复杂,所以尽管http://blog.chinaunix.net/u3/

2010-03-05 18:24:00 761

MIL-STD-188-110C中文译稿.pdf

军用短波通信美军标准中文译稿,带书签 可用于研究短波通信系统的调制/解调标准 mil-std-188-110c标准的翻译稿,附录B暂缺

2020-07-31

BD2软件接收机相关的资料. part4/4

这是我做硕士毕业论文时收集的关于BD2民用软件接收机相关的资料。来源于北斗官网、CNKI、IEEE、insidegns等网站。

2012-04-23

BD2软件接收机相关的资料. part3/4

这是我做硕士毕业论文时收集的关于BD2民用软件接收机相关的资料。来源于北斗官网、CNKI、IEEE、insidegns等网站。

2012-04-23

BD2软件接收机相关的资料. part2/4

这是我做硕士毕业论文时收集的关于BD2民用软件接收机相关的资料。来源于北斗官网、CNKI、IEEE、insidegns等网站。

2012-04-23

自适应滤波器原理·答案

这是Simon Haykin著的自适应滤波器第四版的答案。

2010-01-28

CORDIC算法论文集锦

里面包含了我做CORDIC毕设时所用的论文资料。从基本原理、算法分析到算法改进几乎都有相关的论文。

2009-03-01

DSP集成开发环境.pdf part4/4

DSP集成开发环境.pdf 里面详细介绍了CCS的使用方法 对初学者很有帮助

2008-11-11

DSP集成开发环境.pdf part3/4

DSP集成开发环境.pdf 里面详细介绍了CCS的使用方法 对初学者很有帮助

2008-11-11

DSP集成开发环境.pdf part 2/4

DSP集成开发环境.pdf 里面详细介绍了CCS的使用方法 对初学者很有帮助

2008-11-11

DSP集成开发环境.pdf part1/4

DSP集成开发环境.pdf 里面详细介绍了CCS的使用方法 对初学者很有帮助

2008-11-11

胡广书 数字信号处理理论、算法与实现 第二版 PDF和代码 part3/3

最后一个压缩包,里面包括了多种变换算法、滤波、功率谱计算算法等等经典

2008-11-02

胡广书 数字信号处理理论、算法与实现 PDF和实现代码 part2/3

里面还包括了实现代码 C/Matlab/Fortran

2008-11-02

TMS320C54x指令系统

里面有C54x的指令详解,包括指令的详细用法和执行情况的举例说明,当然寻址方式是首先讲述的

2008-10-20

dec-to-bin-octal-hex convertor

里面是一个自己写的十进制到小于64位的二进制、八进制、十六进制的转换器。没有做多余的界面处理。在C提示符下运行。源数文件头按以下格式书写:目标数据长度 小数部分长度 转换方式(0 2bin 1 2oct 2 2hex) 前缀(0 不需要前缀 1 需要) 后缀 调用形式:convertor(可以修改) sourcefilename destinationfilename

2008-10-18

Elementary Mathematical and Computational Tools

Elementary Mathematical and Computational Tools for Electrical and Computer Engineers Using MATLAB.pdf

2008-10-18

Matlab getting started

(eBook - pdf) Matlab - Getting started.pdf

2008-10-18

CCStudio技术

CCStudio的硬件配置、编译环境、实时功能配置、编译效率等应用 CCStudio的硬件配置、编译环境、实时功能配置、编译效率等应用

2008-10-16

TMS320C54x硬件原理及设计

其中介绍了C54x的硬件组成原理,总线结构、内部存储器、中央处理器、外设、串口、扫描电路、引脚信号说明、硬件电路设计等内容

2008-10-16

MIL-STD-188-141D

MIL-STD-188_141D

2023-11-05

MIL-STD-188-110D

MIL-STD-188_110D

2023-11-05

MIL-STD-188-141A

MIL-STD-188_141A

2023-11-05

MIL-STD-188-110A

MIL-STD-188_110A

2023-11-05

MIL-STD-188-141C

MIL-STD-188_141C

2023-11-05

MIL-STD-188-110C

MIL-STD-188_110C

2023-11-05

TECHNICAL STANDARDS FOR NON-HOPPING HF COMMUNICATIONS

STANAG4539-TECHNICAL STANDARDS FOR NON-HOPPING HF COMMUNICATIONS

2023-11-05

TECHNICAL STANDARDS FOR AN AUTOMATIC RADIO CONTROL SYSTEM (ARCS)

STANAG4538-TECHNICAL STANDARDS FOR AN AUTOMATIC RADIO CONTROL SYSTEM (ARCS) FOR HF COMMUNICATION LINKS

2023-11-05

BD2软件接收机相关的资料. part1/4

这是我做硕士论文时收集的关于BD2民用软件接收机相关的资料,其中含概了北斗官方、insidegns、CNKI、IEEE等网站上公布的资料。

2012-04-23

Global Positioning System_Theory and Applications_Volume II.PDF

Global Positioning System Theory and Applications (Volumes II) [Bradford W. Parkinson and James J. Spilker Jr. (Editors) - 1996] 详细介绍见: http://astrobooks.com/globalpositioningsystemtheoryandapplicationsvolumesiandiihardbackbradfordwparkinsonandjamesjspilkerjreditors-1996.aspx

2012-02-20

Understanding GPS - Principles and Applications, Second Edition

The objective of the second edition, as with the first edition, is to provide the reader with a complete systems engineering treatment of GPS. The authors are a multidisciplinary team of experts with practical experience in the areas that each addressed within this text. They provide a thorough treatment of each topic. Our intent in this new endeavor was to bring the first edition text up to date. This was achieved through the modification of some of the existing material and through the extensive addition of new material.

2011-12-07

Channels, Propagation and Antennas for Mobile Communications, part2/2

by Rodney Vaughan and Jorgen Bach Andersen ISBN:0852960840 Institution of Electrical Engineers © 2003 (753 pages) This exceptional text introduces the reader to the theory and basis of antennas and propagation in the rapidly developing field of mobile communications. Topics covered include basic

2011-03-18

Channels, Propagation and Antennas for Mobile Communications, part1/2

by Rodney Vaughan and Jorgen Bach Andersen ISBN:0852960840 Institution of Electrical Engineers © 2003 (753 pages) This exceptional text introduces the reader to the theory and basis of antennas and propagation in the rapidly developing field of mobile communications. Topics covered include basic multipath mechanisms and propagation, propagation modeling, and more.

2011-03-18

Principles of mobile communication. Gordon Stuber. 2nd edition

This book follows from my first edition and is intended to provide a thorough, up to date, treatment of wireless physical communications. The book is derived from a compilation of course material that I have taught in a graduatelevel course on physical wireless communications at Georgia Tech over the past decade. This textbook differs from others on the subject by stressing mathematical modeling and analysis. My approach is to include detailed derivations from first principles. The text is intended to provide enough background material for the novice student enrolled in a graduate level course, while having enough advanced material to prime the more serious graduate students that would like to pursue research in the area. The book is intended to stress the fundamentals of mobile communications engineering that are important to any mobile communication system. I have therefore kept the description of existing and proposed wireless standards and systems to a minimum. The emphasis on fundamental issues should benefit not only to students taking formal instruction, but also practicing engineers who are likely to already have a detailed familiarity with the standards and are seeking to deepen their knowledge of the fundamentals and principles of this important field.

2011-01-06

Jakes,Microwave Mobile Communications.part3/3

This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.

2010-12-20

Jakes,Microwave Mobile Communications.part2/3

This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.

2010-12-20

Jakes,Microwave Mobile Communications.part1/3

This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974.This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology.

2010-12-20

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