| dc.description.abstract | The Global Navigation Satellite Systems (GNSS) has long been employed in positioning
especially in outdoor environments with limited use in indoor applications because GNSS
signals are too weak to penetrate buildings and unable to provide reliable indoor positioning.
Hence, GNSS’s inability to work in the indoor environment invites extensive research
and development of other means which could achieve communications in the indoor setting
like the use of Bluetooth, Wi-Fi, ZigBee, Sigfox, and LPWAN. An indoor positioning
system (IPS) allows an object to be located and tracked within an indoor environment.
With the introduction of the Internet of Things (IoT), the business interest in locationbased
applications and services has also increased. Hence, the demand for accurate indoor
localization services have become important, this project aimed at developing a low-cost
positioning system using GNSS signal processing and transmitting the pseudo ranges using
LPWAN nodes (LoRa Modules) to enable real-time communication of data over long
distances of about 20-30 km for both indoor and outdoor scenarios. In this project, LoRa
was chosen for transmitting pseudo-ranges because of its long range of communication,
low power consumption, and low cost of connectivity. For the methodology, the NEO-6M
GPS module was used to collect the GNSS data, it was then transmitted over a required
distance of about 10km using the E32 LoRa node, and MATLAB was used to analyze
the data. The circuit was simulated in Proteus and built on a Vero board. Arduino UNO
software was used to program the microcontroller Atmega328P chip. | en_US |
