They would be jamming their own glide bombs and drones then. It would be more useful to jam Russian airspace to defeat Ukrainian drone attacks.

GPS interference is estimated from ADS-B data which is broadcast by airplanes so that they can be tracked. The lack of data over Ukraine is because their airspace is closed to civilian flights.

The GNSS jamming in Ukraine is mostly from Ukraine themselves, to defend against Russian drones and guided bombs.

Just as Iran jams GNSS, and Venezuela jammed GNSS ahead of the attack. Didn't really help though.

https://arstechnica.com/gadgets/2026/05/nasa-satellites-can-...