GPS is useful, but not required for operation. Inertial guidance, and ground tracking cameras can easily maintain a good position sense, while completely RF passive. This is also already normal on many toy drones.
You would also want to jam it over a large area. That jamming is akin to a “kick me” sign, in neon lights.
Inertial guidance sucks balls for any meaningful amount of time. Combining it with ground tracking gets it a lot better, if you have good time of flight sensors to measure the distance from the ground. But this also falls flat on its face when the ground is too uniform (grassland, wetland, snow etc).
GPS is useful, but not required for operation. Inertial guidance, and ground tracking cameras can easily maintain a good position sense, while completely RF passive. This is also already normal on many toy drones.
You would also want to jam it over a large area. That jamming is akin to a “kick me” sign, in neon lights.
Inertial guidance sucks balls for any meaningful amount of time. Combining it with ground tracking gets it a lot better, if you have good time of flight sensors to measure the distance from the ground. But this also falls flat on its face when the ground is too uniform (grassland, wetland, snow etc).