Use of an external inertial navigation system to ensure UAV flight in conditions of GNSS signal interference

Abstract

Global Navigation Satellite Systems (GNSS) have long been the primary positioning solution for unmanned aerial vehicles (UAVs) due to their global coverage, accuracy and lightweight receivers. However, GNSS signals are prone to interference, jamming, and spoofing, which can disrupt UAV operations. To improve reliability and safety, researchers have studied alternative navigation systems, including inertial navigation systems (INS), in situations where GNSS is not available. This article discusses the use of external INS to support UAV flight when GNSS signals are not available.