The US Air Force has awarded a $23.5 million contract to integrate home-on-GPS-jam seekers into JDAM-ER precision-guided bombs being supplied to Ukraine. The upgrade, developed by Scientific Applications and Research Associates, uses the company’s RF seeker technology to allow the weapons to detect and home in on Russian GPS jamming signals that have been significantly degrading the effectiveness of Western-supplied munitions on the battlefield, reports The War Zone.

Instead of being disabled by electronic warfare, the modified JDAM-ERs would be able to turn the jamming itself into a targeting signal, effectively allowing them to strike the systems responsible for disrupting navigation and guidance. The capability is intended to improve Ukraine’s ability to suppress Russian electronic warfare assets and restore the effectiveness of other precision weapons.

The US has also approved a $373.6 million sale of JDAM-ER extended-range bomb kits to Ukraine, which will significantly expand its ability to strike targets from longer distances while improving accuracy and survivability. The package includes over 1,500 guidance kits, spare parts, and support equipment, with Boeing as the primary contractor, according to Military.com. It is intended to strengthen Ukraine’s precision strike capability by converting standard bombs into GPS-guided glide weapons that can be launched from safer standoff ranges, supporting ongoing operations against Russian forces.

Russian forces are extensively using GPS jamming and electronic warfare systems in Ukraine, which has significantly reduced the effectiveness of US-supplied precision weapons such as JDAMs, HIMARS rockets, and Excalibur artillery shells.