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Types Of Indoor Positioning System And Its Working

In recent years, indoor positioning systems have gained huge popularity and are widely used to find the location. A wireless positioning system helps to locate people or objects inside a large facility such as malls, restaurants, hospitals, warehouses, etc. In indoor surrounding positioning lack of GPS signals and line of sight with orbiting satellites makes positioning complex as compared to outdoor surrounding. The location information is fed to a software application to make the information useful. 

There are several different technologies used for indoor navigation; some of them are listed below:

· Proximity-based Systems

· Ultra Wide-band Systems

· WiFi-based Systems


Proximity-based Systems

 

This system can detect the general location of a person or an object on a room level inside a large facility. It uses tags and beacons for indoor positioning. There are two types of reader-based or reference point-based. 

 

Ultra Wide-band Systems

 

In this system, three or more ultra-wideband readers transmit a very wide pulse over a GHz of the spectrum. The readers listen for chirps from ultra-wideband tags. These tags have a spark-gap-style exciter that generates a little pulse, which forms a short, coded, and very wide instantaneous burst. The reader reports accurate time measurement from the tags to the central server. The accuracy of the location information is very good in this system. 

 

Wi-Fi-based Systems

 

In this system, the tags are WiFi transmitters and send simple packets to a number of WiFi access points inside the facility. The access points send the time and strength of that reading to a backend, which uses algorithms to compute the location. The position information is then sent to the cloud.

 

UbiTrack is a multi-dimensional indoor positioning solution having high accuracy, flexibility, and low cost. There are many types of indoor navigation systems and related solutions are available like RFID Positioning System, VM Hardware Version and many more.

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