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 attenuat

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 co

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