Russia finds a devastatingly simple way to make killer drones evade Ukrainian EW — doubles antennas to 32 and…

The central component at the heart of this upgrade is the Kometa satellite navigation module, manufactured by VNIIR-Progress. Historically, the Kometa system allowed Russian weaponry to maintain a lock on Global Navigation Satellite System (GNSS) signals—such as GPS, GLONASS, and Galileo—even when subjected to local interference. However, as Ukraine’s electronic warfare (EW) capabilities have matured, the standard configurations of these navigation systems have begun to falter, prompting a rapid iteration cycle in Russian defense design.

The Evolution of Antenna Complexity

The primary defense mechanism within these navigation modules is the use of "patch" antenna arrays. These antennas are designed to filter out signals that do not originate from legitimate satellite constellations. By analyzing the angle of arrival and the specific characteristics of incoming radio waves, the system can effectively "null out" or suppress interference emanating from terrestrial jammers.

Earlier iterations of the Kometa system typically featured 8 or 16 antenna elements. Each element adds a layer of spatial filtering, allowing the receiver to ignore noise from specific directions. As Ukrainian forces intensified their jamming efforts—deploying both high-powered ground-based transmitters and mobile tactical jammers—the Russian military found that 16-element arrays were increasingly insufficient.

Recent battlefield intelligence, supported by the recovery of downed hardware, indicates that Russian manufacturers are now moving toward 20-element and, in some cases, 32-element arrays. Serhii Beskrestnov, a prominent electronic warfare specialist and advisor to the Ukrainian government, has noted that the increase in elements is a direct response to the density of the electronic environment. "The more elements, the more electronic-warfare signal sources the antenna can suppress," Beskrestnov explained. The 32-element configuration is particularly sophisticated, reportedly functioning by combining two separate 16-element arrays to operate across multiple frequency bands, such as the L1, L2, and L5 bands used by modern GNSS.

A Chronology of the Electromagnetic Arms Race

The struggle for control of the electromagnetic spectrum began in the early stages of the conflict, characterized by relatively rudimentary jamming of consumer-grade drones. As the war progressed, both sides shifted toward military-grade hardware.

• Initial Phase: Russian forces utilized basic GPS-denial techniques, leading to the development of the first Kometa-equipped Shahed and Geran drones.
• Expansion Phase: As Ukraine began to field more robust EW systems, Russia initiated mass-procurement of upgraded navigation modules. Records suggest Russian defense firms have ordered over 100,000 such modules across various configurations.
• Current Escalation: The appearance of 32-element antennas in the field confirms a shift toward hardware-level resistance. These components are no longer limited to long-range drones; they are now integrated into guided aerial bombs, Iskander-M and Kinzhal missiles, and the newer Filin cruise missiles.

This widespread integration reflects a strategic decision to standardize navigation protection across the entirety of Russia’s precision-guided inventory, rather than reserving advanced tech for a few high-value assets.

Ukrainian Countermeasures and Technical Analysis

Despite the increased resilience provided by these larger antenna arrays, Ukrainian specialists remain optimistic about their ability to neutralize the threat. The battlefield is not merely a contest of signal strength, but a contest of algorithmic processing.

Ukraine’s approach to defeating these systems is multifaceted. Commanders on the ground, such as the leader of the "Night Watch" unit known by the callsign "Alkhimik," suggest that the 32-element array is not a silver bullet. By creating sophisticated, dual-band jamming environments that cover the L1, L2, and L5 spectrums simultaneously, Ukrainian units believe they can overwhelm the processing capabilities of the Kometa system, regardless of the number of antenna elements.

Another sophisticated method involves "spoofing," a technique where a system mimics a legitimate satellite signal to trick the drone’s receiver. Rather than simply creating noise, spoofing provides the drone with false coordinate data. Fly Group Ukraine, an organization focused on developing defensive technologies, has pioneered devices that transmit fabricated location data to incoming munitions.

Anatoliy Khrapchynskyi, development director at Fly Group Ukraine, described the process: "The drone continues to think it is flying toward its target, but its own autopilot, relying on the false coordinates, gradually changes course on its own and steers the craft away from cities into safe areas." This technique is particularly effective because it does not alert the drone’s onboard software to the fact that it is being manipulated; it effectively "nudges" the weapon off-course until it runs out of fuel or crashes in an unpopulated zone.

Strategic Implications and Economic Costs

The implications of this ongoing technological tug-of-war are profound for both sides. For Russia, the cost of scaling up production to include 32-element antennas is significant. Not only does it increase the unit price of each drone or missile, but it also creates a logistical burden in sourcing the necessary semiconductors and high-precision components required for the complex arrays.

For Ukraine, the inability to rely solely on electronic jamming forces a shift in defense strategy. If electronic warfare can no longer guarantee the neutralization of an incoming target, the burden of defense shifts back to kinetic interception. This necessitates a greater reliance on traditional air defense systems, such as MANPADS (Man-Portable Air-Defense Systems), radar-guided anti-aircraft guns, and interceptor aircraft.

These kinetic systems are inherently more expensive and resource-intensive to operate than electronic jammers. A single missile interceptor can cost hundreds of thousands of dollars, whereas a jammer is a one-time investment that costs a fraction of that amount to operate. If Russia’s improved antennas succeed in forcing Ukraine to use kinetic defenses more frequently, it will place a massive strain on Ukraine’s ammunition supplies and defense budget.

Future Outlook

As the conflict continues, the "cat and mouse" game of electromagnetic warfare shows no signs of slowing down. The next iteration of Russian drone technology may involve even more complex signal-processing algorithms that can identify and ignore spoofing attempts by comparing satellite data with internal inertial navigation systems (INS).

Conversely, Ukraine is likely to continue its research into wide-spectrum jamming and more precise spoofing techniques that are capable of bypassing the adaptive filtering of 32-element arrays. The battle for the skies is no longer just about who has the most missiles or the best pilots; it is about who can best control the invisible waves of the electromagnetic spectrum.

The sheer scale of the Russian investment—with over 100,000 modules reportedly in the pipeline—suggests that Moscow views this as a long-term challenge. For the international defense community, the conflict in Eastern Europe serves as a real-time laboratory for the future of warfare, where the outcome of battles is increasingly determined by the speed at which software and hardware can be upgraded in the face of an adversary’s innovation. As it stands, neither side has achieved a permanent advantage, ensuring that the development of electronic warfare and counter-electronic warfare technology will remain a top priority for military planners for the foreseeable future.