Non-Coherent Radio-Based Positioning
(2019) EITM02 20191Department of Electrical and Information Technology
- Abstract
- In this thesis, a new Angle-of-Arrival (AoA) technique is used to determine the direction of a target in an outdoor environment using Radio Frequency (RF) signals. This technique estimates the AoA based on the difference between the Received Signal Strength Indicators (RSSI) from two/four directive antennas. This thesis work includes a mathematical model for this new technique, simulations that matches real life scenarios, and many measurements in real environments. The main task is a proof-of-concept for the RSSI difference-based AoA. In order to test the developed algorithm, two communication technologies were used, Bluetooth Low Energy (BLE), and Long Range Wide Area Network (LoRaWAN). Both technologies are power efficient systems and... (More)
- In this thesis, a new Angle-of-Arrival (AoA) technique is used to determine the direction of a target in an outdoor environment using Radio Frequency (RF) signals. This technique estimates the AoA based on the difference between the Received Signal Strength Indicators (RSSI) from two/four directive antennas. This thesis work includes a mathematical model for this new technique, simulations that matches real life scenarios, and many measurements in real environments. The main task is a proof-of-concept for the RSSI difference-based AoA. In order to test the developed algorithm, two communication technologies were used, Bluetooth Low Energy (BLE), and Long Range Wide Area Network (LoRaWAN). Both technologies are power efficient systems and are widely used in Internet of Things (IoT); BLE is used for short range applications while LoRa is used for long range applications. Two estimation techniques were developed based on hard decisions, but the core for both estimation techniques was the same. The difference was in the number of antennas used in each setup and the estimation procedure. The obtained results complied with the theoretical expectations. Though there was some range issues in the LoRa case. The results looked promising and the next step for this thesis work is to use more advanced estimation techniques in order to enhance the accuracy of AoA, and to work on suggested solutions for the LoRa issues. (Less)
- Popular Abstract
- Advances made in technology have paved the way for many new technologies. One of such advances are those made in the field of Internet of Things (IoT). These advances have received much attention in academia, industry, as well as in society. Advances that made it possible to manufacture miniature electronics chips that are power efficient made it possible to provide solutions to many difficult situations. In addition, they can be used in planning smart cities and vehicles.
In most of big cities, and nowadays, smaller cities, many services that were not available a few years ago can be found; some of such services are bicycles and scooters that can be rented by anyone by simply downloading the services’ applications and use them to find a... (More) - Advances made in technology have paved the way for many new technologies. One of such advances are those made in the field of Internet of Things (IoT). These advances have received much attention in academia, industry, as well as in society. Advances that made it possible to manufacture miniature electronics chips that are power efficient made it possible to provide solutions to many difficult situations. In addition, they can be used in planning smart cities and vehicles.
In most of big cities, and nowadays, smaller cities, many services that were not available a few years ago can be found; some of such services are bicycles and scooters that can be rented by anyone by simply downloading the services’ applications and use them to find a nearby bicycle or scooter. Another situation where these technologies become handy are the cases of lost animals, key-chains, or any other object.
These new advances made it possible to manufacture small chips/devices that are implantable, wearable, or can be attached to any desired object. As an example, a small chip can be attached to an animal’s collar and use an applicable application to locate the animal. Or in the case of key-chains or other objects, attach the chip to the desired object to make it easier to find.
One of such technologies is Bluetooth Low Energy or simply BLE. Depending on how frequent a device equipped with BLE is used, it can work for weeks, months, or even a year without any need to replace its battery. Such devices are very useful when a permanent source of energy is not usually available or changing the batteries on a frequent bases is not applicable.
One of the fields in which these devices are useful is the field of animal tracking where scientists implant or put a tag on an animal or a group of animals and study their behavior. This is very helpful in finding the where-about of animals and can be used to prevent poaching and illegal hunting. In this thesis, a new technique that can be used implementing both BLE or LoRa technologies was developed for positioning. Additionally, the new technique is considered to be simpler than most of the technologies currently in use. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/student-papers/record/8993458
- author
- Rezaei, Farshid LU and Abou Nasa, Mohamad LU
- supervisor
-
- Fredrik Tufvesson LU
- Xuhong Li LU
- organization
- course
- EITM02 20191
- year
- 2019
- type
- H2 - Master's Degree (Two Years)
- subject
- keywords
- target localization and tracking, wireless sensor network (WSN), hybrid measurements, received signal strength (RSS), angle of arrival (AoA)
- report number
- LU/LTH-EIT 2019-720
- language
- English
- id
- 8993458
- date added to LUP
- 2019-09-05 17:09:33
- date last changed
- 2019-09-05 17:09:33
@misc{8993458,
abstract = {{In this thesis, a new Angle-of-Arrival (AoA) technique is used to determine the direction of a target in an outdoor environment using Radio Frequency (RF) signals. This technique estimates the AoA based on the difference between the Received Signal Strength Indicators (RSSI) from two/four directive antennas. This thesis work includes a mathematical model for this new technique, simulations that matches real life scenarios, and many measurements in real environments. The main task is a proof-of-concept for the RSSI difference-based AoA. In order to test the developed algorithm, two communication technologies were used, Bluetooth Low Energy (BLE), and Long Range Wide Area Network (LoRaWAN). Both technologies are power efficient systems and are widely used in Internet of Things (IoT); BLE is used for short range applications while LoRa is used for long range applications. Two estimation techniques were developed based on hard decisions, but the core for both estimation techniques was the same. The difference was in the number of antennas used in each setup and the estimation procedure. The obtained results complied with the theoretical expectations. Though there was some range issues in the LoRa case. The results looked promising and the next step for this thesis work is to use more advanced estimation techniques in order to enhance the accuracy of AoA, and to work on suggested solutions for the LoRa issues.}},
author = {{Rezaei, Farshid and Abou Nasa, Mohamad}},
language = {{eng}},
note = {{Student Paper}},
title = {{Non-Coherent Radio-Based Positioning}},
year = {{2019}},
}