Multi-sensors Systems for Ubiquitous Personal Navigation

导航技术正在以惊人的速度发展，特别是在民用社区，车辆和个人导航器等设备在我们的日常生活中变得司空见惯。虽然车载和机载导航是一项成熟的服务，但通过智能手机的个人导航系统(PNS)才刚刚开始获得势头，这是由于应用市场的激增、硬件的发展和消费者的采用。PNS支持基于移动位置的服务(LBS)，这些服务变得无处不在，并嵌入到社交网络、资源跟踪和人员定位等许多应用中。基于全球定位系统(GPS)的导航设备是这些应用的主要解决方案。然而，GPS信号并不总是可用的，这对密集的城市峡谷、树冠下和室内深处等GPS信号不可用的环境提出了巨大的挑战。

Navigation technologies are expanding at a phenomenal rate, especially within the civil community, with devices such as vehicle and personal navigators becoming commonplace within our everyday lives. While vehicle and airborne navigation is a well-established service, personal navigation system (PNS) through smart phones has just started to gain momentum fuelled by the application marketplace proliferation, hardware evolution, and consumer adoption. PNS enables mobile location based services (LBS) which become pervasive and are embedded in many applications such as social networking, resource tracking and positioning people . Global Positioning System (GPS) based navigation devices are the dominant solution for these applications. However, GPS signals are not always available and this poses a great deal of challenge for GPS signal-denied environments such as dense urban canyons, under tree canopy and deep indoors.