EPC Global Class 1 Generation UHF RFID Protocol V109
2022-05-12 19:31:14 3.92MB UHF RFID
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GeoTrust windows证书
2022-05-12 09:05:15 927B windows 综合资源
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环球超市 从Kaggle提取数据集,以分析有关世界各地客户所下订单的信息。
2022-05-11 15:54:23 11.26MB JupyterNotebook
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(以船底顶为例,根据经纬度来判断你所需要的那一块文件,这里是ASTGTM_N24E113.zip这个文件,24N代表北纬24度,113E代表东经113,这在中学地理就学过,不需要多说了,aster_gdem是目前我们能公开免费得到的精度最高的高程数据,全国的aster_gdem已有热心网友上传到FTP上,可用FTP工具下载,中国全境是20.7G,IP:218.56.157.94 user:gps pwd:gps 目录:/上传区/ASTER_GDEM) http://g.zhubajie.com/urllink.php?id=9126646nj2e5vx5m09xzb4t(2010-05-27,11:40重新上传,临时空间,请在48小时内及时下载) 可能有人不会使用FTP工具,那么下载aster_gdem可以去这里,磨房早有人提供过链接。 http://www.doyouhike.net/forum/comm_nav/397931,0,0,1.html 关于aster_gdem,有兴趣的山友可以参看如下文档,这是绿野大侠Ylong的杰作,感谢这位不曾谋面的老师(他是我最初自学地图制作的老师,他的贴子让我受益良多) http://g.zhubajie.com/urllink.php?id=90768249z4g96klcc8tp6uj 此文档详述了aster_gdem的特征,精度以及异常情况。 以前我们经常使用的是SRTM3的高程数据,如果只从精度来看,aster_gdem优于srtm3。 关于srtm3,磨房的山友曾作过整理,提供了下载链接,这是srtm3 V4: http://www.doyouhike.net/forum/comm_nav//308389,0,0,1.html#83600690 大家有兴趣的话可以比较一下aster_gdem与srtm3的区别。
2022-05-10 17:20:38 1.92MB Global Mapper 教程
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Computer Networking_ A Top-Down Approach 7th ed Global 2017 (超清)
2022-04-30 19:09:22 16.29MB 网络
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GPS蓝宝书:Global Positioning System:Theory and Applications(Volume I) Part I. GPS Fundamentals 部分目录: Chapter 1. Introduction and Heritage of NAVSTAR, the Global Positioning System ..................................................................................... 3 Bradford W. Parkinson, Stanford University, Stanford, California Background and History ............................................................................................... 3 Predecessors . ...... ... ..................... ........ ...... ................................................................. 4 Joint Program Office Fonned, 1973 ............... ......... ........................................... ...... 6 Introductory GPS System Description and Technical Design ..................................... 10 Principals of System Operation . ................. ........... ......... ..................... ...... ............... 10 GPS Ranging Signal....................... .............. ..... ............. ................ ......... ................. 11 Satellite Orbital Configuration .................................................................................. 13 Satellite Design ......................................................................................................... 14 Satellite Autonomy: Atomic Clocks .............................. ........................................... 14 Ionospheric Errors and Corrections ......... ................ ............. .............. ........ ...... ........ 16 Expected Navigation Performance ........................................................................... 16 High Accuracy/Carrier Tracking .............................................................................. 18 History of Satellites .. ....................... ............... ........... ......... ...... .............. ............ .......... 19 Navigation Technology Satellites ....... ............ .................. ........................................ 19 Navigation Development Satellites-Block I .......................................................... 19 Operational Satellites-Block II and IIA .... .................... ..................... ......... ..... ...... 19 Replacement Operational Satellites-Block IIR ...................................................... 20 Launches ........................................................................................................................ 20 Launch Vehicles ..... ....... ................ .............. ......... ............ ......................................... 20 Initial Testing ................................................................ ................................................ 22 Test Results ......................................................... ...................................................... 22 Conclusions ........ .................................................................................... ................... 24 Applications .................................................... .......... ....... ................ .............................. 24 Military ............... ........................ ..... .... .......... ....... .............. .......................... ............. 24 Dual Use: The Civil Problem ................................................................................... 24 Pioneers of the GPS .. ............ .......................... ............ ......... ............................ ............. 26 Defense Development, Research, and Engineering-Malcolm Currie and David Packard . ................................ ................. ............. ............. ..................... ...... 26 Commander of SAMSO, General Ken Schultz ........................................ ............... 26 Contractors ........................................................................................... ..................... 26 Joint Program Office Development Team ..... .................... .................... ...... ...... ....... 27 Predecessors .................... ................... ........... ............... .... ................ ...... .............. ..... 27
2022-04-30 13:29:37 33.82MB GPS; 蓝宝书
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Global Positioning System: Theory and Applications 是经典的GPS蓝皮书,不论是初学者还是行业相关人员,都可以从它那里得到有益的帮助,分享给大家学习
2022-04-30 13:26:45 24.2MB GPS蓝皮书
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当前正在使用卫星来跟踪火车的位置。 使用卫星的定位系统可以帮助降低安装和维护路边设备的成本。 本文针对大量铁路全球定位系统(GPS)数据开发了一种非线性组合数据约简模型,以减少存储空间,从而加快火车的定位。 通过采用前瞻性概念,二分法思想或将问题变为最短路径问题后采用广度优先的策略,提出了三种算法,以获得最优解。 开发了两种技术来大幅减少最佳算法的计算时间。 利用青藏铁路(QTR)的GPS实测数据来比较算法的性能。 结果表明,该算法可以从大量的GPS数据点中提取一些数据点,从而使火车轨迹的表示更为简单。 此外,这些提出的算法显示了算法的解决方案质量和计算时间之间的权衡。
2022-04-25 11:31:38 512KB Data reduction; Global Positioning
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ROS导航路径规划中move_base、global_planner、TEB规划器的参数说明,原料来自于ROS wiki、网友分享资料等。以便于参数设置和调优参考使用。
2022-04-21 17:06:38 1.43MB ROS 机器人 路径规划 调优参数
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Global Mapper操作手册 Global Mapper操作手册 Global Mapper操作手册 part2 共两部分
2022-04-04 21:03:26 11.13MB Global Mapper操作手册 part2
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