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相关概念视频

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device01:30

Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device

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Surveyors use Global Positioning System (GPS) technology to measure the precise location and elevation of points on Earth. In a recent survey, GPS receivers were used to determine the coordinates and elevations of two park monuments. The process involved careful mission planning, data collection, and correction to ensure accuracy. The survey began with mission planning to identify optimal satellite visibility and minimize Position Dilution of Precision (PDOP). A geodetic control point...
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Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

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Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
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Errors in Global Positioning System01:26

Errors in Global Positioning System

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Global Positioning System (GPS) technology has revolutionized navigation and positioning, but its accuracy is often compromised by various errors. These errors, stemming from environmental, satellite, and receiver-related factors, require careful mitigation to ensure reliable performance across applications.Atmospheric ErrorsGPS signals travel through the Earth’s ionosphere and troposphere, introducing delays which affect accuracy. The ionosphere is strongly influenced by charged particles,...
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Manipulation and Analysis01:21

Manipulation and Analysis

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GIS manipulation and analysis functions are vital for decision-making and planning. These activities range from data retrieval tasks, such as selecting information based on specific criteria, to advanced analytical techniques that address complex spatial problems.One critical GIS analysis method is overlaying, which combines multiple data layers to examine impacts. For example, overlaying a river-dammed lake boundary with road networks can identify affected infrastructure. Another common...
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Introduction to Global Positioning System01:30

Introduction to Global Positioning System

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The Global Positioning System (GPS) revolutionized positioning on Earth, providing precise location data through satellite ranging. The GPS system was developed in 1978 by the U.S. Department of Defense  for military use, and it became available for civilian applications in 1983, transforming fields including navigation, fleet management, and time synchronization for telecommunications systems.GPS consists of satellites in medium Earth orbit, about 20,200 kilometers above the surface,...
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Levels of Use of a GIS01:29

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Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
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SGO:VANETS中的基于位置的服务的语义组模糊.

Ikram Ullah1,2, Munam Ali Shah3

  • 1Department of Computer Science, City University of Science and Information Technology, Peshawar 25000, Pakistan.

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概括

车辆特设网络面临位置隐私风险. 语义组模糊化 (SGO) 技术通过将相似的车辆分组并使用随机坐标来增强车辆隐私,大大降低了开销并改善了匿名化.

关键词:
这就是VANETs.这些都是匿名化,匿名化.位置模糊化 位置模糊化位置 隐私 位置 隐私 隐私基于位置的服务.伪名 伪名 伪名

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科学领域:

  • 车辆通信网络 车辆通信网络
  • 网络安全和隐私保护

背景情况:

  • 车辆特设网络 (VANET) 需要服务的位置隐私.
  • 基于位置的服务 (LBS) 服务器可以破坏车辆的身份并跟踪未来的移动.
  • 现有的隐私方法不充分使用语义位置和假名的变化,增加网络开销.

研究的目的:

  • 提出一个语义组模糊化 (SGO) 技术,以加强 VANET 中的位置隐私.
  • 解决现有方法在利用位置语义和伪名管理方面的局限性.
  • 为了减少与虚假位置消息相关的网络开销.

主要方法:

  • 开发了语义组模糊化 (SGO) 技术.
  • 在道路上具有相似状态的车辆被组合在一起.
  • 使用随机位置坐标进行LBS通信.
  • 通过使用高层次彼得里网 (HLPNs) 正式建模SGO.

主要成果:

  • SGO 改善了车辆的匿名化和.
  • 该技术可以将位置可追溯性和网络通用费用 (计算和通信成本) 降低55%至65%.
  • HLPN建模证实了SGO计划的正确性和适当性.

结论:

  • 在VANETs中,SGO为位置隐私提供了一个强大的解决方案.
  • 拟议的方法有效地平衡了隐私保护和网络效率.
  • 通过掩盖车辆位置数据,SGO增强了对敌人的安全性.