Impulse-Radio Ultra-WideBand (IR-UWB)
IR-UWB stands for ‘Impulse Radio Ultra Wideband’; a radio wave with a very short time pulse; a nano second (10-9).
Map applications; such as Google Maps, and car navigation systems use location information sent from space positioning satellites called GPS*1. Such satellite signals cannot reach inside buildings or underground however, so indoor positioning systems are needed.
NICT has developed an indoor positioning system using IR-UWB that can measure locations with an accuracy of several tens of centimeters, an order of magnitude higher than Wi-Fi (several meters) and IMES (ten meters).
Through experiments in shopping malls and logistics warehouses, we have demonstrated that the system is useful for in-store navigation and location-based coupon distribution, as well as for improving operational efficiency, such as improving the positioning and flow lines of workers, forklifts, and other equipment in warehouses.
*1 GPS: Global Positioning System
![Image of IR-UWB technology use (utilization in supermarkets)](../assets/pj/iruwb.jpg)
Development and Applications of a UWB Indoor Positioning System (NICT NEWS Aug 2014, No.443)
![Chip and LSI (sample)](../i/assets/images/iruwb1.jpg)
![Anchor device (prototype-1)](../i/assets/images/iruwb2.jpg)
![Anchor device (prototype-2)](../i/assets/images/iruwb3.jpg)
![Mobile device (prototype-1)](../i/assets/images/iruwb4.jpg)
![Mobile device (prototype-2)](../i/assets/images/iruwb5.jpg)
![Demonstration test at a logistics warehouse (1)](../i/assets/images/iruwb6.jpg)
![Demonstration test at a logistics warehouse (2)](../i/assets/images/iruwb7.jpg)
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