Description: Global navigation satellite systems have been revolutionising surveying, geodesy, navigation and other position/location sensitive disciplines. However, there are two intrinsic shortcomings in such satellite-based positioning systems: signal attenuation and dependence on the geometric distribution of the satellites. Consequently, the system performance can decrease significantly under some harsh observing conditions. To tackle this problem, some new concepts of positioning with the use of pseudo-satellites have been developed and tested. Pseudo-satellites, also called pseudolites, are ground-based transmitters that can be easily installed wherever they are needed. They therefore offer great flexibility in positioning and navigation applications. Although some initial experimental results are encouraging, there are still some challenging issues that need to be addressed. This paper reviews the historical pseudolite hardware developments and recent progress in pseudolite-based positioning, and discusses the current technical issues. Platform: |
Size: 757629 |
Author:angyangxiang |
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Description: 基于超宽频UWB技术的实时定位系统,可用于室内与室外定位,dart-Ultra-Wideband UWB technology based on real-time positioning system that can be used indoor and outdoor location, dart Platform: |
Size: 86016 |
Author:杨波 |
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Description: 基于超宽频UWB技术的实时定位系统,可用于室内与室外定位，小区定位-Ultra-Wideband UWB technology based on real-time positioning system that can be used indoor and outdoor location, residential location Platform: |
Size: 76800 |
Author:杨波 |
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Description: 室内定位技术以其在定位搜救、公共安全、商业等方面良好的应用前景而备受人们重视。阐述了用于室内定位的几种算法,在详细介绍RF ID传感器定位原理、特点及关键技术的基础上,评述了LANDMARC定位系统及其优缺点,并展望了室内定位技术的发展趋势。-Accurate indoor positioning technology is an important and novel emerging technology for location
rescue, public safety and commercial app lications. Several indoor positioning algorithms are p resented. Based on
the p rincip les, characteristics and key technology of RF ID, LANDMARC system and its major advantages and
disadvantages are rewiewed emphatically. The development trend of indoor positioning technology are indicated. Platform: |
Size: 154624 |
Author:cele |
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Description: In recent years, stepping with the popularization of smart phone and the
development of mobile communication infrastructure, the conditions for ubiquitous
computing society become more and more complete. In the vision of ubiquitous
computing society, LBS (Location Based Service) that provides an added value to an
unprecedented user experience has been paid a great deal of attention by mobile
operators all over the world. As the core technology for LBS, various positioning
systems have been studied extensively. For the outdoor environment GPS is mature
and common. However, the performance of GPS in indoor environment is bad.
Moreover, currently there is no technique whose accuracy and cost are appropriate for
deployment in huge areas. -In recent years, stepping with the popularization of smart phone and the
development of mobile communication infrastructure, the conditions for ubiquitous
computing society become more and more complete. In the vision of ubiquitous
computing society, LBS (Location Based Service) that provides an added value to an
unprecedented user experience has been paid a great deal of attention by mobile
operators all over the world. As the core technology for LBS, various positioning
systems have been studied extensively. For the outdoor environment GPS is mature
and common. However, the performance of GPS in indoor environment is bad.
Moreover, currently there is no technique whose accuracy and cost are appropriate for
deployment in huge areas. Platform: |
Size: 13071360 |
Author:NayAlteia |
Hits:
Search - indoor based location system