GPS Positioning System

Chapter 1: Introduction

1.1 Problem Summary:

The GPS (Global Positioning System) that we use provided by various sources is a great technology for locating objects/people on the map. Although the system is accurate enough, it is not accurate enough to pin-point an objects/person’s location within a building or within the campus of any place shown on the map.

The other problem we find is that the location, if at all is being found by some methodology of users within the campus of some place, then that data is not so far being put into use for some meaningful purpose.

The idea behind this project is to solve the above two problems.

1.2 Aim and Objectives of the Project:

The project aims at designing an indoor positioning system that shall

To provide maintenance information of the beacons.

1.3 Problem Specifications

The Global Positioning System (GPS) is a navigation system that uses satellite to get the location of the user’s device, a receiver that receives signal from the satellite. The Location is provided a tuple of latitude and longitude. Although the limitation of the system is that the receiver’s device should be in line-of-sight with the satellite. This hence would not work for any situation where the device is not in sight of the satellite.

Apart from this, the GPS technology fails to provide indoor location and tracking service due to signal attenuation. Signal attenuation is when the signal strength reduces during transmission. The signal inside any building hence gets considerably low and hence fails to identify the location. In Global Positioning System, since it provides location in terms of latitude and longitude, the location is not a precise as required for indoor positioning as a considerably large amount area of land is considered under a single grid of latitude and longitude.

The existing systems for indoor positioning largely use WLAN, infrared and ultra-sound as a medium. Although they are although widely used, they are often costly and complex to

The research presented hereby is mainly focused on tracking.

1.4.1 System Architecture

To track a mobile device, an architecture of Bluetooth beacons is to be used. Such an architecture shall be inexpensive and at the same time be easy to deploy. One way is to accomplish positioning by making mobile devices responsible for localization by detecting beacons and by doing so, mobile devices do not need to be in discovery mode and privacy is maintained.

[3] implements a system using WLAN and uses Wi-Fi fingerprinting and signal strength to locate mobile phones. The author uses the Wi-Fi routers installed as various locations for the purpose. Similarly, [4] implements the similar system using an architecture that uses light as a medium.

** about other people’s psar patents

An option for indoor positioning system is to have beacons scan for mobile devices. This requires an architecture that is distributed and where beacons report information about the mobile device to the server. For this, no specialized software on the mobile device is required and hence does not require active participation from the