Celestial navigation, an ancient form of aviation navigation using stars, was integrated into aircraft like Lockheed’s SR-71 for precise positioning. However, with the rise of GPS, interest in celestial navigation decreased due to its perceived inaccuracy. This paper explores using celestial navigation on low-cost UAVs without the need for expensive systems. By leveraging a strapdown celestial system, this study offers a lightweight and cost-effective alternative. A unique technique involving orbital motion correction enhances position estimates, overcoming limitations of the AHRS. Independent of inertial filters, this method provides accurate global position measurements, making it a valuable addition to aerial navigation systems.
https://www.mdpi.com/2504-446X/8/11/652