Submit Manuscript | http://medcraveonline.com Introduction Satellite-Based Augmentation System (SBAS) enhances and improves the accuracy, integrity, and availability of Global Navigation Satellite System (GNSS) signals, like GPS, Galileo, Beidou by providing wide-area corrections data and range errors via geostationary satellites. 1–10 SBAS-supported operations provide more safety, enhanced navigation effectiveness, and contribute to reducing operational costs for airlines, while improving accessibility to local airports, runways in remote and mineral-rich states facilitating investments among others. The aerospace sector is a critical component of Africa’s economy, connecting people, goods, and services across the nations, regionally and globally. However, the current navigation infrastructure particularly category 3 level of Instrument Landing Systems (ILS) faces challenges in meeting the increasing navigation demands beyond the major cities in Africa for safety, efficiency, and precision in aviation operations. Satellite-Based Augmentation Systems (SBAS), coupled with a well-structured Global Navigation Satellite System (GNSS) policy, offer transformative potential for addressing these challenges. African aviation stakeholders and non-aviation stakeholders in general must define the governance structure and model of Satellite Based Augmentation System (SBAS) in Africa in complementary role to exiting navigation technologies in aviation and non-aviation sectors of African Economy. 11–14 SBAS adoption in Aviation sector in Africa aligns with the Single African Air Transport Market (SAATM) agenda of African Union (AU); a flagship project of the AU agenda 2063 to advance the liberalization of civil aviation in Africa through a unified sky and acting as an impetus to the continent’s economic integration agenda. The implementation of Satellite-Based Augmentation Systems (SBAS) in the aerospace sector is pivotal for enhancing aviation safety and operational efficiency in all parts of Africa where rural or domestic airports beyond the major cities. SBAS enhances the Global Navigation Satellite System (GNSS) by providing critical corrections and integrity monitoring, which are essential for safety-critical applications in aviation. The primary function of SBAS is to improve the accuracy, integrity, and availability of GNSS signals, which is crucial for navigation and landing procedures in civil aviation. SBAS operates by utilizing geostationary satellites to transmit correction data to GNSS users. This capability significantly enhances the quality of GNSS positioning, making it suitable for various civil aviation tasks, including precision approaches and landings. For instance, the European Geostationary Navigation Overlay Service (EGNOS) and the Wide Area Augmentation System (WAAS) have been instrumental in supporting aircraft navigation by providing reliable positioning information that meets stringent safety requirements. The integration of SBAS allows for advanced procedures such as Localizer Performance with Vertical Guidance (LPV), which provides pilots with critical guidance during approach and landing phases. Moreover, the synergy between SBAS and other augmentation techniques, such as Ground-Based Augmentation Systems (GBAS) and Receiver Autonomous Integrity Monitoring (RAIM), further enhances the integrity of navigation systems. These systems work in tandem to ensure that any potential errors in GNSS signals are detected and mitigated, thereby safeguarding aviation operations from hazardous misleading information (HMI).The incorporation of multiple GNSS constellations and advanced monitoring techniques allows for improved fault detection and exclusion, which is essential for maintaining high safety standards in aviation. The formulation of GNSS policy in the context of SBAS implementation is also critical. As countries develop their own SBAS, such as India’s GAGAN and China’s BeiDou SBAS, it becomes increasingly important for Nigeria as a Member-ready State for SAATM (Pilot Implementation Project (PIP) and other Aeron Aero Open Access J. 2025;9(2):79‒86. 79 ©2025 Lawal et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and build upon your work non-commercially. Need For GNSS policy to help fast-track implementation of continent- wide satellite-based augmentation system (SBAS) for Africa Volume 9 Issue 2 - 2025 1 Information and Communications Engineering Department, Usmanu Danfodiyo University, Sokoto, Nigeria. 2 Engineering and Design Department, School of Engineering and Informatics, University of Sussex, Brighton, United Kingdom. Correspondence: Lasisi Salami Lawal, Information and Communications Engineering Department, Usmanu Danfodiyo University, Sokoto, Nigeria, Tel +2348023151587 Received: March 23, 2025 | Published: April 22, 2025 Abstract Satellite-Based Augmentation System (SBAS) deployment on a continental level would allow for CAT-I approaches on all runway ends, greatly enhancing the safety and operational efficiency in the approach phase. The aerospace sector is a critical component of Africa’s economy, connecting people, goods, and services across the nations, regionally and globally. However, the current navigation infrastructure particularly category 3 level of Instrument Landing Systems (ILS) faces challenges in meeting the increasing navigation demands beyond the major cities in Africa for safety, efficiency, and precision in aviation operations. The article provides SBAS service demonstrations in some African countries including Nigeria, benefits of Satellite-Based Augmentation Systems (SBAS), coupled with a well- structured Global Navigation Satellite System (GNSS) policy to offer transformative potential for addressing these challenges. Keywords: cost benefit analysis, GNSS policy, ICAO SARPs, SBAS for Africa Aeronautics and Aerospace Open access Journal Mini Review Open Access