We are flying long range fixed-wing UAVs and want to improve our video downlink stability. At the moment we are in the 15 km range but we tend to lose connection when the plane banks, which is normal because the air antenna gets tilted,
While on a mission with our fixed wing UAV in a tropical country, flying a routine surveillance mission, the UAV started to roll with high amplitude movements, climb 10 m above its 150 m mission altitude, and fall.