2026-04-17T07:48:08Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4407422025-09-11T10:11:12Zcom_2072_1033col_2072_452951

2025-09-11T10:11:12Z urn:hdl:2117/440742 Positioning engine module of a SBAS software-embedded receiver Brescó Sanz, Agustí Àrees temàtiques de la UPC::Aeronàutica i espai Software Satellites GNSS SBAS Programari Satèl.lits This project is dedicated to the development and evaluation of a software module specifically designed to assess the performance of Global Navigation Satellite System (GNSS) receivers operating under the Satellite-Based Augmentation System (SBAS). The primary objective is to evaluate key performance metrics, including accuracy, availability, continuity, and integrity, with a particular focus on the European Civil Aviation Conference (ECAC) region. The developed software module functions as an embedded tool capable of processing raw GNSS measurements, navigation messages, and SBAS corrections to compute Position, Velocity, and Time (PVT) solutions. The module strictly follows international SBAS standards defined by the Minimum Operational Performance Standards (MOPS) and is designed to support only single-frequency (SF) configurations, incorporating data from GPS and Galileo constellations. Dual-frequency (DF) functionality has not been implemented due to the lack of available real data for this configuration during the conducted tests. By simulating real-world operational conditions, this module provides a comprehensive framework for analysing receiver performance. The software is structured to perform a series of tasks ensuring accurate and reliable performance evaluation. It begins by validating and preprocessing the raw GNSS data to ensure data consistency and quality. Subsequently, SBAS corrections are applied to account for satellite positioning errors, ionospheric delays, and tropospheric effects. The corrected data is then processed through an iterative algorithm to compute refined PVT solutions and protection levels. Moreover, the module evaluates receiver-level performance metrics across multiple SBAS service levels to verify compliance with international standards. The project's results will demonstrate the effectiveness of this module in evaluating SBAS-enabled receiver performance under realistic operational conditions. Special emphasis is placed on the evaluation of the APV-I and LPV-200 service levels, which are essential for aviation safety. The insights obtained are expected to contribute significantly to the enhancement of GNSS systems, promoting improved reliability and accuracy for safety-critical applications such as aviation, maritime, and terrestrial navigation. 2025-09-11T10:11:12Z 2025-09-11T10:11:12Z 2025-06-25 Bachelor thesis http://hdl.handle.net/2117/440742 Open Access Universitat Politècnica de Catalunya