室内定位技术论文

【实例简介】
是一篇关于室内定位技术的论文，不错，值得看看
RT Indoor Navigation needs Where to find milk? Who's around? the nia Where did i leave my car? Where is the closest How to get there? What can i restaurant find here? 啭 L-六 Nokia research center N口KIA WiFi Positioning Based on measuring the relative received signal strength (rss from wiFi access points at the mobile Available today in many smartphones but with limited accuracy Location accuracy typically 30-50 meters Adequate for local search but not for indoor navigation Limited coverage and accuracy inside large indoor spaces due to automatic data collection Floor information not available Used for asset tracking in specific environments such as hospitals Provides room level accuracy with good probability Requires manual calibration ● Challenges Achieving high accuracy in large open indoor spaces -such as malls, supermarkets or airports-is challen ging due to radio signals propagating easily large distances Accuracy is deteriorated by directional handset antennas, which affect the relative ap signal strengths Practical maximum reachable accuracy is 3-10 meters depending on environment Nokia research center NOKIA HAIP-High accurac Indoor Positioning Nokia research center HAIP-Location Enhanced bluetooth Technology Built on top of bluetooth Low Energy ble] technology by adding direction finding capability e Provides up to 0.3 m position accuracy Based on directional positioning beacons installed in covered areas Beacon density similar to WiFi access point density Typically l beacon/100-2500 m2 depending on installation height No calibration required One way communication is sufficient between the mobile and the positioning beacon i.e. time synchronization is not needed Mobile locates itself by measuring dod (Direction of departure of a signal broadcasted by the positioning beacon No networking connection needed No latency No privacy concerns Nokia research center NOKIA Localization Principle with a Single positioning beacon Using a single antenna and fixed mobile height mobile can resolve its 2d location 6 hm=1.2-1.4m TX: transmitter RX receiver Nokia research center NOKIA Localization Principle with Multiple positioning beacons Using multiple positioning beacons, mobile can resolve its 3d location 6, or increasing the position reliability and accuracy TX: transmitter RX receiver Nokia research center NOKIA System Confiquration: Server-centric approach Asset tracking mode Positioning beacon 〔 in receive mode Positioning Server 3GPP WLAN Global BLE Tag Beacon BLE phone Database Nokia research center NOKIA System Components: Mobile-centric approach Mobile positioning mode Positioning beacon 〔 in broadcast mode) Beacon Bluetooth Low Energy (ble] Database 2. 4 GHZ Broadcast 3GPP WLAN 三盟 E Handset with location (network connection EnhancedBLEoCBLEonboad Nokia research center NOKIA 【实例截图】
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