For an operator, signal jamming is not an abstract electronic warfare problem. It is the moment the aircraft stops responding. The video freezes. GPS begins to drift. The platform enters a failsafe, turns around, or continues forward without the ability to be retasked. At that point, the mission has changed. The operator is now navigating blind in a GPS-denied environment over hostile terrain, unable to confirm position, avoid threats, or verify a target. Without reliable GPS and command-and-control links, the force loses precision navigation and the ability to coordinate and retask in real time — capabilities that took decades to build and that no modern force can fight without. 

How is Signal Jamming Used on the Battlefield? 

Signal jamming is the use of energy blasts to deliberately disrupt wireless signals. It takes several forms: 

• Spot jamming targets a specific frequency. Typically used against a single high-value link, such as one radar or aircraft's control channel. 

• Barrage jamming attacks a wider portion of the spectrum. Employed when the exact frequency in use isn't known, trading precision for guaranteed coverage. 

• Directional jamming directs power against a platform or formation. Used to deny a specific corridor or formation without lighting up the whole spectrum. 

• Reactive jamming detects a signal and follows it as it changes frequencies. Reserved for high-priority targets, as detecting and chasing a live signal requires more sophisticated equipment. 

• GNSS jamming denies navigation, while spoofing attempts to make the platform trust false information. These are the most frequently used tactics against unmanned systems, as GPS is generally the cheapest and most exposed link to attack. 

Jamming was first used on the battlefield in 1904, when Russian forces jammed Japanese naval radio signals during the Russo-Japanese War. It resurfaced in both World Wars, as naval and aircraft-navigation signals were jammed and "bent" on both sides, and became a mainstay of Cold War signals intelligence. Despite this long history, jamming only emerged as a foundational modern warfare strategy during the Russia-Ukraine war. 

Jamming and spoofing systems now blanket the entire battlefield as each side attempts to counter unmanned aerial systems that rely on GPS and command-and-control links. The conflict has set a new precedent for how warfighting is conducted, requiring any military planning to assume a contested electromagnetic environment. 

Why Do Most Signal Resilience Solutions Fall Short? 

Most solutions only address one part of the problem signal jamming creates. Spectrum awareness tells you interference is present, but it does not protect the link. Inertial navigation keeps the aircraft moving, but it drifts and does not maintain command and control. Frequency hopping attempts to avoid the threat, but modern jammers can follow, retuning just as fast as the frequencies they're chasing. And every hop is itself a fresh emission – one that can be tracked back to its source. Autonomy may continue the mission, but the operator can lose control, video, telemetry, and the ability to retask the platform.  

These capabilities matter, but they largely help manage the loss of the signal. Masking a broken link isn't the same as keeping it alive. It treats the symptom rather than the illness, while the operator still loses real control, navigation, and situational awareness at the exact moment those matter most. 

Signal Hardening: The Archaius Anti-Jamming Solution  

Archaius takes a different approach. Our technology is designed to detect interference, suppress it before it corrupts the receiver, and preserve the signal the operator needs, without emitting a trace. At the same time, it provides direction finding that helps turn the jammer from an invisible disruption into a measurable feature of the battlespace. A jammer that can be located is no longer just a threat suppressing the fight – it’s a target. Once triangulated, it can be struck and permanently removed, rather than routed around every time it powers on.  

The operational difference is simple. When the jammer turns on, the operator should not immediately lose the aircraft or surrender the airspace. Instead, the platform should remain controllable. The mission should continue. The force should gain information about where the interference is coming from. That’s where Archaius comes in. 

Archaius has tested its technology through more than 40 range days against directional, omnidirectional, and simultaneous jamming configurations, including months of operational testing in Ukraine.  

The electromagnetic spectrum is terrain. The force that can continue communicating, navigating, and making decisions inside the contested spectrum maintains freedom of action. 

Why Does Signal Resilience Matter Beyond the Battlefield? 

Jamming is now becoming a common tactic far beyond Ukraine. Its use has been thoroughly documented as a wartime tactic in the Baltic states, Southeast Asia, the Gulf, and Latin America over just the past few months. It now disrupts thousands of civil flights and vessels daily. Beyond layered, jamming-avoidance solutions, it’s time to meet the threat at its source: the GPS and wireless communications systems we all rely on.  

Because when the jammer turns on, the mission must continue. 

Jim Lewis is Director of US Defense Strategy at Archaius. A recently-retired U.S. Army Green Beret with over two decades of service on multiple ODA teams, Jim manages and develops commercial relationships with the global special operations community and conducts threat assessments to critical and geostrategic infrastructure. He leverages his experience as an operator to integrate and implement Archaius' cutting-edge technology where it's needed most.