Outdoor propagation models involve estimation of propagation loss over irregular terrains such as mountainous regions, simple curved earth profile, etc., with obstacles like trees and buildings. All such models predict the received signal strength at a particular distance or on a small sector. These models vary in approach, accuracy and complexity. Hata Okumura model is one such model.
Jigyansha Jeevan (2022). Hata Okumura model for outdoor propagation (https://github.com/sudo-xda/MatLab-Codes/releases/tag/v1.0.2), GitHub. 검색됨 .