Global Positioning: Technologies and Performance

本书全面概述了各种定位系统的优缺点,特别强调卫星定位系统。从定位系统的发展历程出发,详细介绍了三大全球导航卫星系统,并探讨了室内定位的挑战、商业定位的发展活动及未来趋势。

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版权声明:原创作品,允许转载,转载时请务必以超链接形式标明文章原始出版、作者信息和本声明。否则将追究法律责任。 http://blog.youkuaiyun.com/topmvp - topmvp
From stars to terrestrial networks and satellites
From outdoors to indoors
From ancient to future applications
From techniques to technologies . . .

The field of radionavigation signals and systems has seen significant growth in recent years. Satellite systems are very efficient, but owing to their limited exposure and/or availability in some environments, they do not cover the whole spectrum of applications. Thus, many other positioning techniques are being developed.

Now, Global Positioning presents an overview of the strengths and weaknesses of various systems with a specific emphasis on those that are satellite-based. Beginning with a description of the evolution of positioning systems, the book provides detailed coverage of the three main Global Navigation Satellite System (GNSS) constellations, discusses how to cope with indoor positioning, defines development activities and commercial positioning, and proposes a vision for the future of the field.

Special features of the book include: *Exercises to test and challenge the reader's understanding
*Direct comparison between constellations and other positioning systems
*Mathematical content kept to a minimum in order to maximize accessibility and readability
*Descriptions of European and U.S. discussions for Galileo
*Historical aspects and links between the distant past and current systems
*Footnotes that provide hints and comments to the reader

At a time when the positioning domain is experiencing such immense transformation, it is vital to have a solid understanding of the fundamental principles, current tech-nologies, and future improvements that will help estimate the performance and limita-tions of existing systems. Global Positioning fills an important need for professionals and students in a variety of fields who want a complete and authoritative overview of global positioning techniques.


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无线定位是指通过无线通信技术实现对物体、人员或其他目标位置信息的准确获取和跟踪的过程。它是当前无线通信技术发展的重要应用之一。无线定位的原理和实践主要基于无线信号的传播和接收特性。 无线定位的原理可以分为两大类:基于信号时差测量的定位和基于信号强度测量的定位。基于信号时差测量的定位通过多个接收节点接收到同一个发送节点发出的信号,并根据信号传播的时差来计算目标位置。这种方法要求接收节点间具备时间同步性和高精度的时钟,但能够实现较高的定位精度。基于信号强度测量的定位通过接收到的信号强度来估计目标位置,这种方法比较简单实用,但定位精度相对较低。 无线定位的实践需要综合考虑无线信号的传播特性、多径效应、误差校正和算法设计等因素。在实际应用中,可以利用已有的基站、卫星导航系统等现有设备来实现无线定位。同时,还可以通过部署额外的接收节点来提高定位精度和覆盖范围。此外,为了应对多路径干扰和降低定位误差,可以采用信号处理、过滤和融合等技术手段。 无线定位广泛应用于室内定位、车辆定位、智能导航、物流管理等领域。它为我们提供了实时、准确的位置信息,为人们的生活和工作带来了便利。随着无线通信技术的不断发展和改进,无线定位的精度和可靠性将会进一步提升,为更多领域的应用提供支持和推动。
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