I think GPS jamming will be effective for the near future; there are no cheap/small/light INSes; the IMUs on drone are super noisy/will drift. That said - GPS

I think GPS jamming will be effective for the near future; there are no cheap/small/light INSes; the IMUs on drone are super noisy/will drift. That said - GPS jamming is the main RF attack that will stop sufficiently autonomous drones.