Ultrasonic Localization of a Quadrotor Using a Portable Beacon

It appears your Web browser is not configured to display PDF files. Download adobe Acrobat or click here to download the PDF file.

Click here to download the PDF file.


O'Keefe, John Michael




This paper presents a method for localization of a quadrotor using ultrasound with five receiving nodes and a portable beacon. The time of flight is measured from when the ultrasonic signal is produced to when it is received and triggered through threshold detection. Two different lateration algorithms are explored to determine the position, the analytical trilateration and linear least squares method. The linear least squares algorithm outperforms the analytical trilateration method for static position testing and GPS-denied hover. A new approach named the combined lateration algorithm combines these two methods and has the best stationary standard deviation with 8.0 cm within a one metre radius at a height of 1.77 m. It calculates a successful measurement 93% of the time, which provides an average update rate of 9.3 Hz. Successful autonomous hover and landing is performed using a stationary and moving beacon within a GPS-denied environment.


Engineering - Aerospace




Carleton University

Thesis Degree Name: 

Master of Applied Science: 

Thesis Degree Level: 


Thesis Degree Discipline: 

Engineering, Aerospace

Parent Collection: 

Theses and Dissertations

Items in CURVE are protected by copyright, with all rights reserved, unless otherwise indicated. They are made available with permission from the author(s).