The study focuses on comparing the effectiveness of optical flow methods in determining the velocity of an Unmanned Aerial Vehicle (UAV). The research aims to develop a method that enables precise monitoring of UAV movement without using external sensors, such as GPS. The study demonstrates how image analysis can be an alternative to traditional methods, particularly when GPS signal access is limited. The implementation and testing conducted on a developed demonstrator confirmed the method’s effectiveness, opening new perspectives for UAV applications in various fields.