On December 15, 2016, the 2016 Global Indoor Positioning Industry Summit sponsored by TU and Shanghai Industrial Technology Research Institute was held in Shanghai National Convention Center. The Summit brought together leading companies in the indoor positioning industry as well as more than 1,000 industry participants to jointly discuss the application of indoor positioning technology.
Through the years of practice and research in indoor positioning industry, Professor Liu Erwu of Tongji University analyzed the current development of indoor positioning technology at home and abroad with the observation of the Microsoft Competition in recent three years. Current indoor positioning technology to what level? After what areas can do further research and development?
With the outdoor GPS, Beidou dominate the world is not the same, there are a variety of indoor mainstream technology presents a flourishing scene. Mainly magneto-electro-optical sound, WIFI, iBeacon, geomagnetic, ultrasonic, as well as ultra-wideband, visible light, laser positioning technology and the current emergence of inertial navigation technology, such as PDR. From these technical point of view, WIFI, iBeacon, geomagnetic and ultrasonic is the current cell phone, Pad can support, and ultra-wideband, visible light, laser is the need for special equipment or hardware to support.
Currently based on mobile phones, do not need additional equipment, do not need a dedicated base station or additional hardware support for mobile positioning What?
First, the current mainstream is WIFI and iBeacon
WIFI and iBeacon in the positioning technology is not too much difference between the two are based on the signal strength of the positioning principle. One of the two ways is the path loss model. Both of these technologies are improving in terms of WIFI, time of arrival, or timestamping. Because of the speed of propagation of electromagnetic waves in space we know that the accuracy will be more accurate. iBeacon is based on Bluetooth 5.0 and is primarily positioned as a way of reaching and leaving.
Second, geomagnetic
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