Re: Better yet
Multiple lenses, easy to do and recommended anyway: one IR-capable (and probably ONLY IR-seeing for night vision and laser resistance), one IR-filtering. Plus drones don't have to see to steer. They can use GPS and accelerometers to fly as well. IOW, they can fly on instruments, meaning they can effectively fly blind.
As for detecting the false signals, you can't do that without at least three antennas. Most cell phones only know the strength of a tower signal; location tends to come from other sources and a fake tower can fake that info. Put it this way, anything private enterprise can do, the government can outdo because, unlike the former, they can legally go outside the limits. They can do things the private folks can't and do it in such a way as to make them indistinguishable from real stuff.