Don't know if this is the right place for this question, but here goes. (I'm a wannabe author, and am working on an exciting book of fiction that will involve aviation.)
If pilots landing planes at a specific airport start experiencing and reporting GPS jamming, what will the consequences be for the jammer? Who looks into this sort of thing, the NTSB? How many days will it take before they can locate and apprehend the culprit?
I'm proposing that the jammer is technically competent and has no financial limitations, so he can build a jamming system involving a steerable parabolic antenna that follows the plane as it makes its approach. If necessary, I can even claim that he mounts his jamming system in the back of a pickup truck and performs his jamming while on the move. (Unrealistic? Never mind, it's fiction, although I'd like to keep things somewhat realistic.)
Incidentally, the culprit is not trying to crash the planes, he's just trying to push the targeted airline into buying and installing an upgraded GPS receiver avionics box. And it works! For each plane with the new GPS box installed, no GPS jamming occurs - because the nasty bad guy stops jamming those planes!
Thanks for any feedback, or even for suggestions as to where I should post this question.
Edit:
Thanks for all the answers. But I'm proposing that the bad guy is specifically targeting the incoming airplane using a parabolic antenna. That should mean that the jamming radio-frequency energy is in a narrow beam up into the sky.
So I'm assuming this means that all the suggestions that the jammer will be easy to find via directional receivers on the ground are not viable. I'm assuming that there won't be any "leakage" of radio waves in any direction other than the focused beam up into the sky. (Is this a valid assumption?)
Thanks again for the answers, and I'm hoping this info makes the situation clearer.