Generation of a localized GPS coordinate system for GPS-denied scenarios

• Main Author: Ng, Wei Jun
• Other Authors: Poenar Daniel Puiu
• Format: Final Year Project
• Language: English
• Published: Nanyang Technological University 2024
• Subjects: Engineering
• Online Access: https://hdl.handle.net/10356/176470
• Institution: Nanyang Technological University

This report explores the development of a localized GPS coordinate system for Unmanned Aerial Vehicles (UAVs), specifically tethered drones, for use in a GPS-denied environment. Tethered drones, known for their extended flight time and increased payload capacity, face challenges in accurate navigation and positioning when deprived of GPS signals, such as indoor or hazardous environments. This project aims to overcome these limitations by utilizing the precise cable distance and angle measurements provided by the tethered drone’s software. The primary objective is to generate a reliable localized GPS coordinate system and to make a direct comparison of its performance with a commercial GPS system. The approach of this project involves detailed analysis of GPS signal behavior under various scenarios, coupled with meticulous planning and execution of experimental setups. Data collected during these experiments is processed into Cartesian coordinates using Python coding, facilitating a direct comparison with traditional GPS-dependent coordinates. The outcomes of this project underscore the superior accuracy and reliability of the localized GPS coordinate system, demonstrating its effectiveness over standard GPS-based systems in challenging environments.