AUTHOR=Javaid Shumaila , Khan Muhammad Asghar , Fahim Hamza , He Bin , Saeed Nasir TITLE=Explainable AI and monocular vision for enhanced UAV navigation in smart cities: prospects and challenges JOURNAL=Frontiers in Sustainable Cities VOLUME=7 YEAR=2025 URL=https://www.frontiersin.org/journals/sustainable-cities/articles/10.3389/frsc.2025.1561404 DOI=10.3389/frsc.2025.1561404 ISSN=2624-9634