Raza, A. and Hussain, B. (2025) “Use of Terrain and Obstacle Databases to Support UAS Detect-and-Avoid in Complex Urban Environments”, Global Frontiers in Integrated Engineering, Mathematics, and Applied Sciences Research, 15(9), pp. 1–20. Available at: https://gsiacademia.com/index.php/GFIEMASR/article/view/Use-of-Terrain-and-Obstacle (Accessed: 2 November 2026).