The Ukrainian Armed Forces have launched a hunt for Russian electronic warfare systems (EW), as they create a "powerful electronic defense" against Western guided missiles and shells, CNN reports.

The publication says that HIMARS missiles "are inherently more vulnerable to electronic warfare than unguided weapons because they rely on GPS to hit targets." 

The Pentagon said it has already taken steps to reduce HIMARS vulnerabilities. Technical improvements "are being implemented as quickly as possible to counter the effects of interference."

Also, Ukrainian troops near Avdiivka claim that Russian systems are throwing Excalibur precision-guided missiles off course. 

Russia's Pole-21 system, which jams GPS signals from drones and missiles, is an important part of Moscow's growing electronic arsenal, CNN reports. In September, Russian authorities announced that they would double the production of electronic warfare systems.

Ukraine's Ministry of Digital Transformation reports that the most important task now is to obtain technology that allows drones to be programmed to defeat Russian electronic warfare equipment. Such technologies are available in the West, Minister Mykhailo Fedorov told the publication.