Ukraine finds Russia’s Geran drones fitted with a compass that works through GPS jamming, but Western electronics still at their core

Russia has started installing magnetometers in the tails or tail fins of its Geran attack drones, Vladyslav Vlasiuk, the Ukrainian president’s commissioner for sanctions policy, said on Facebook on 28 October.

Russia uses its Shahed-Geran series drones in massive daily attacks on Ukraine. Ukrainian forces jam Gerans’ satellite navigation to push them off course, and Russia keeps hardening the drones against it, already fitting them with adaptive antennas. The magnetometer appears designed to go further, giving the drone a heading that doesn’t depend on satellites at all. Earlier this month, Ukrainian military intelligence reported a US-made magnetometer in the upgraded Geran-4.

A new jamming device, and Western parts at the core

Vlasiuk posted photos from a site where Ukraine studies Russian weapons and their components. He said he takes the findings for Ukraine’s sanctions work. He did not say which Geran models carry the magnetometer.

At the same time, Ukraine is studying how a new jamming device works. Vlasiuk did not say where it was found or what it targets.

“Western electronics are at the core everywhere,” Vlasiuk wrote.

Geran-4 already flew with a US-made sensor

On 5 October, Ukraine’s Defense Intelligence (HUR) said the upgraded Geran-4 carries a new “MOKh” unit built around a PNI5GA magnetometer made by US firm PNI Sensor. The unit works with the SADRA inertial navigation module to cut gyroscope drift and make the drone’s autonomous navigation more accurate.

HUR said Russia also added an electro-optical navigation system called Susanin to the upgraded Geran-4. It compares camera images with a reference image stored in memory to keep the drone on its route to the target. The new K5 version of the Geran-5 uses a similar system.

Presidential adviser Serhii “Flash” Beskrestnov warned on 28 October that if Russia starts using Susanin en masse on Geran-5s and other drones and missiles at night, Ukraine may have to go back to switching off lights, especially on roads.