Electromagnetic Spectrum as Cognitive Terrain
The electromagnetic spectrum is not contested space. It is occupied territory, and the occupier does not wear a uniform.
On April 4, 2024, Lloyd’s List vessel-tracking data revealed something that should have alarmed every defense ministry in the West: 117 commercial ships appeared to be parked at Beirut’s Rafic Hariri International Airport. They were not on land, of course. Their navigation systems had been spoofed, their GPS positions falsified by Israeli electronic warfare systems designed to confuse inbound drones. The ships were at sea, sailing blind while their instruments insisted otherwise. That same week, analysis by Kuehne+Nagel confirmed 227 vessels in the Black Sea experienced the same displacement. By June 2025, Windward AI data compiled in a cumulative analysis by GPSPATRON documented more than 3,000 vessels spoofed in the Persian Gulf and Strait of Hormuz alone. These are not isolated incidents. They are the visible surface of an invisible war being waged across the entire electromagnetic spectrum, one that degrades not just navigation but the foundational trust that modern civilization places in its own infrastructure.
The Invisible Domain
The electromagnetic spectrum is the substrate on which modern society operates. Every GPS fix, every cellphone call, every stock trade timestamped to the microsecond, every synchrophasor measurement keeping a continental power grid synchronized: all of it rides on radio frequencies that can be jammed, spoofed, or denied with equipment that fits in a shoebox. A November 2025 analysis by RAND Europe described electromagnetic warfare as NATO’s most critical blind spot, documenting Russia’s deployment of over 400 radar sites and at least fourteen dedicated military electronic warfare units, with capabilities ranging from the mobile Krasukha-4 tactical system to the Murmansk-BN, a truck-mounted array capable of jamming high-frequency communications across a radius exceeding 5,000 kilometers. Russia’s doctrine treats the electromagnetic spectrum not as a support function but as a primary domain of combat, integrated at every echelon from platoon to theater command.
The convergence gap is this: Western institutions treat spectrum interference as a technical nuisance, a series of isolated incidents requiring engineering fixes. Russia, China, and their proxies treat the spectrum as cognitive terrain, a domain where degrading an adversary’s ability to navigate, communicate, and synchronize its own systems erodes trust in infrastructure that citizens and institutions take for granted. The attack is not on the signal. The attack is on the certainty that the signal can be trusted.
The Baltic Laboratory
The Baltic Sea has become the world’s most documented proving ground for spectrum warfare against civilian infrastructure. Since Russia’s full-scale invasion of Ukraine in February 2022, GPS jamming and spoofing in the region has become a near-daily occurrence, emanating primarily from electronic warfare installations in Russia’s Kaliningrad exclave and the St. Petersburg area. Polish researchers at Gdynia Maritime University triangulated the signal origins in spring 2025 to two coastal sites in Kaliningrad, both within a kilometer of known EW units and the Okunevo military antenna complex. The interference has shifted from crude jamming to sophisticated spoofing, falsifying coordinates to make ships appear at airports and aircraft report positions hundreds of kilometers from their actual location.
The scale is staggering. Between January and April 2025, a Baltic-Nordic ICAO submission documented over 122,000 flights disrupted by GNSS interference in the region. An EU Council document (ST-9188-2025-REV-1) recorded Poland logging 2,732 cases of GPS interference in January 2025 alone, with Lithuania reporting 1,185 cases the same month. Estonian authorities reported that 85 percent of the country’s flights were affected by navigation interference. Finland’s Finnair suspended flights to Tartu, Estonia in April 2024 after repeated signal disruptions made safe approach impossible.
In September 2025, the escalation reached its most visible inflection point. The plane carrying European Commission President Ursula von der Leyen experienced GPS jamming while approaching Plovdiv, Bulgaria, forcing pilots to navigate using analogue maps after the entire airport area’s GPS went dark. Kremlin spokesperson Dmitry Peskov denied Russian involvement, telling the Financial Times that the information was “incorrect.” But eight European countries, including the Baltic states, Finland, Poland, France, the Netherlands, and Ukraine, had already filed a formal complaint with the International Telecommunication Union in March 2025. The ITU’s Radio Regulatory Board, at its 98th meeting in March 2025, geolocated the interference sources to Russian territory. Russia did not respond.
The Clock Inside Everything
Navigation denial is the visible layer. The deeper vulnerability is timing. GPS is not merely a positioning system: it is the Western world’s de facto master clock. Every sector of critical infrastructure, from financial markets to power grids to telecommunications networks, depends on GPS-derived timing signals that arrive from satellites 20,000 kilometers overhead with the signal strength of a flashlight seen from space.
In the financial sector, the dependency is existential. A NIST Technical Note (TN 2189) documented that GPS timing is embedded in the operating architecture of stock exchanges, banking transaction systems, and telecommunications networks across the United States and globally. The New York Stock Exchange relies on GNSS antennae at its New Jersey server farm to timestamp every trade to the microsecond, while the SEC’s Rule 613 requires all equity and options markets to synchronize clocks within 50 milliseconds of NIST atomic time. The EU’s MiFID II directive mandates equivalent synchronization for European trading venues, brokerage firms, and banks. The Depository Trust and Clearing Corporation settles approximately $24 quadrillion in transactions annually. All of it runs on GPS-synchronized timing. A spoofing attack that introduced even millisecond-level timing errors could, as University of Texas researchers demonstrated in published analysis, trigger crossed markets, spurious quote saturation, and conditions resembling the 2010 Flash Crash, when improperly time-stamped data caused cascading failures across multiple exchanges.
The power grid dependency is equally alarming. Approximately 2,000 phasor measurement units (PMUs) are deployed across key nodes of the North American power grid, providing the synchronized voltage and current measurements that enable real-time monitoring, fault detection, and stability control. Every PMU derives its timing reference from GPS. Researchers at the University of Texas Radionavigation Laboratory demonstrated that GPS spoofing attacks on PMUs could induce false phase-angle measurements large enough to trigger automatic generator trips. A single false trip, under the wrong grid conditions, could initiate cascading faults identical in mechanism to the 2003 Northeast Blackoutthat left 55 million people without power. The vulnerability is not theoretical: it is engineered into the system’s design. As NIST documented, GPS dependency was built into critical infrastructure timing specifications from the beginning because GPS could readily provide the required accuracy. The dependency was a feature. It is now an attack surface.
The Cognitive Dimension
This is where The Frequency War diverges from conventional analysis of electronic warfare. The standard framing treats GPS jamming as a technical degradation problem: signals go down, backup systems engage, engineers develop countermeasures. This framing misses the strategic intent.
When Russia jams GPS across the Baltic, the immediate effect is navigational disruption. The strategic effect is that European citizens, airlines, shipping companies, and governments must confront the realization that a system they assumed was as reliable as gravity can be switched off by a hostile actor at will. When ships appear at airports and planes circle cities because their instruments lie, what degrades is not just the signal but the cognitive framework that takes the signal for granted. This is the essence of gray zone warfare applied to the electromagnetic spectrum: attack the adversary’s trust in its own systems without crossing the threshold that triggers a military response.
The Finland-based Hybrid Centre of Excellence concluded that the Baltic jamming is likely spillover from Russian drone defense operations rather than deliberately targeted at civilians. But as analysts quoted by PBS noted, Russian authorities have come to appreciate the “second order of effect”: even spillover creates disruption and disquiet among neighboring nations. The distinction between incidental and intentional collapses when the perpetrator sees the collateral damage as a strategic benefit and makes no effort to prevent it. Russia’s deployment of Tobol systems in Kaliningrad, its shifting from jamming to more sophisticated spoofing in 2025, and the geographic reach of interference extending from Finland to Bulgaria all indicate a deliberate expansion of capability, not merely defensive spillover.
The Institutional Response, and Its Limits
The international community has responded with unprecedented condemnation and almost no enforcement. On October 3, 2025, the ICAO Assembly at its 42nd triennial session in Montreal formally condemned Russia and North Korea for recurring GNSS interference, declaring the actions infractions of the 1944 Chicago Convention. Six EU member states, Estonia, Finland, Latvia, Lithuania, Poland, and Sweden, presented evidence of near-daily disruptions. The EU Transport Commission welcomed the condemnation as “unequivocal.” The ITU geolocated the interference to Russian territory. In June 2025, thirteen EU member states formally requested the European Commission develop alternative navigation systems and accelerate interference-resistant GNSS services.
ICAO has no enforcement mechanism. Its condemnation carries diplomatic weight but no operational consequence. Russia lost its seat on ICAO’s 36-member governing council after the 2022 invasion and has shown no inclination to recover it. The ICAO Council sent Russia a formal letter in July 2025 with a 30-day response window. Russia did not reply. The pattern is instructive: the international architecture for managing the electromagnetic spectrum was built for a world in which states cooperated on signal integrity because disruption was mutual. That assumption no longer holds when one state treats disruption as doctrine.
On the technical front, the most promising countermeasure is the R-Mode terrestrial navigation system developed by the German Aerospace Center (DLR) and European partners. R-Mode uses existing medium-wave and VHF maritime radio infrastructure to provide satellite-independent positioning with accuracy of approximately 10 meters. Eight transmitters now span an 800-kilometer corridor from Heligoland to Stockholm. The ORMOBASS project is extending coverage to Finland and Estonia, precisely the region most affected by Russian interference. IALA Guideline 1187, published in early 2025, standardizes the signal format. DLR researchers presented the system at the 39th Chaos Communication Congress in December 2025, targeting full operational capability by the end of 2026. The system is real, it works, and it is years late for a threat that has been documented daily since 2022.
Five Pillars: Toward Spectrum Sovereignty
Pillar One: Reclassify Spectrum Interference as Critical Infrastructure Attack. GPS jamming and spoofing that affects civilian aviation, maritime navigation, financial timing, or power grid synchronization should be classified under NATO and EU frameworks as an attack on critical infrastructure, not an aviation safety incident. The current classification fragments the response across ICAO, ITU, IMO, and national regulators. A unified classification triggers unified response authorities.
Pillar Two: Mandate GPS-Independent Timing for Critical Infrastructure. Financial exchanges, power grid operators, and telecommunications networks should be required to maintain independent timing sources, atomic clocks or terrestrial alternatives, capable of sustaining operations for a minimum of 30 days without GPS. The technology exists. The London Stock Exchange has already partnered with Hoptroff for terrestrial precision timing services. The U.S. National Timing, Resilience and Security Act of 2018 required the Department of Transportation to establish a national terrestrial timing signal. As of 2025, the deadline has been missed. Mandate it again with enforcement.
Pillar Three: Accelerate R-Mode and Terrestrial Navigation to Operational Status. The R-Mode project demonstrates that satellite-independent maritime navigation is technically feasible and cost-effective. Expand funding to achieve operational coverage across the entire Baltic and North Sea by 2027, with Mediterranean and Atlantic coverage following. Integrate R-Mode receivers into Type Approval requirements for commercial vessels. For aviation, accelerate EASA-certified alternative navigation approaches for airports in documented interference zones.
Pillar Four: Establish Spectrum Interference Attribution as a Standing Intelligence Function. The ITU’s geolocation of interference sources to Russian territory and the Polish researchers’ triangulation to specific Kaliningrad installations demonstrate that attribution is technically achievable. Make it continuous, automated, and publicly reported. A persistent, open-source spectrum monitoring network across NATO’s eastern flank, combining government sensors, academic research stations, and commercial satellite data, would eliminate the plausible deniability that sustains gray zone operations.
Pillar Five: Integrate Electromagnetic Domain Awareness into Civilian Decision-Making. RAND’s assessment that electromagnetic warfare is NATO’s blind spot applies equally to civilian governance. European heads of government fly through jammed airspace because no one in the decision chain treats spectrum integrity as a threat variable. Financial regulators approve trading systems that depend entirely on GPS timing because no one in the approval chain asks what happens if the timing disappears. Embed electromagnetic domain awareness into civilian risk frameworks the way cybersecurity has been embedded over the past decade. The spectrum is the substrate. If the substrate is contested, everything built on it is provisional.
War Over Invisible Air
The frequency war is already underway. It is not a future scenario but a present condition, documented daily across the Baltic, the Black Sea, the Persian Gulf, and the airspace of a dozen European countries. The West’s critical infrastructure, its financial markets, power grids, telecommunications networks, and transportation systems, was designed around the assumption that GPS signals would always be available and always be trustworthy. That assumption is now a vulnerability measured in ships that appear at airports, planes that navigate by paper maps, and a $24-quadrillion financial system synchronized to signals that a $29 jammer can erase.
The spectrum does not belong to anyone. That is both its genius and its weakness. The nations that build their civilization on invisible signals without defending those signals have built on sand, and the tide is already coming in.
RESONANCE
Defense News. (2025). Researchers Home in on Origins of Russia’s Baltic GPS Jamming. Defense News. https://www.defensenews.com/global/europe/2025/07/02/researchers-home-in-on-origins-of-russias-baltic-gps-jamming/. Summary: Polish researchers at Gdynia Maritime University triangulated Baltic GPS interference to two Kaliningrad coastal sites near known EW installations and the Okunevo antenna complex.
Euronews. (2025). What Can Europe Do to Better Defend Against GPS Interference from Russia? Euronews. https://www.euronews.com/my-europe/2025/09/02/what-can-europe-do-to-better-defend-against-gps-interference-from-russia. Summary: Reports that Poland logged 2,732 GPS interference cases in January 2025, Estonia saw 85 percent of flights affected, and Lithuania recorded 22-fold year-over-year increases.
GPS World. (2025). 13 EU Member States Demand Action on GNSS Interference. GPS World. https://www.gpsworld.com/13-eu-member-states-demand-action-on-gnss-interference/. Summary: Thirteen EU member states formally requested the European Commission develop alternative navigation systems and counter increasing GNSS interference, citing EU Council document ST-9188-2025-REV-1.
GPSPATRON. (2025). Maritime GNSS Interference Worldwide: A Cumulative Analysis 2025. GPSPATRON. https://gpspatron.com/maritime-gnss-interference-worldwide-a-cumulative-analysis-2025/. Summary:Cumulative analysis documenting over 3,000 vessels spoofed in the Persian Gulf and Strait of Hormuz by June 2025, with global GNSS interference tracking data.
Humphreys T (2012). GPS Spoofing and the Financial Sector. University of Texas Radionavigation Laboratory. https://radionavlab.ae.utexas.edu/images/stories/files/papers/summary_financial_sector_implications.pdf.Summary: Analysis demonstrating that GPS spoofing of financial exchange timestamps could trigger crossed markets, quote saturation, and conditions resembling the 2010 Flash Crash.
Humphreys T, Shepard D, Fansler A (2012). Evaluation of the Vulnerability of Phasor Measurement Units to GPS Spoofing Attacks. International Journal of Critical Infrastructure Protection. https://www.sciencedirect.com/science/article/abs/pii/S1874548212000480. Summary: Demonstrated that GPS spoofing of power grid PMUs could induce false generator trips and cascading faults resembling the 2003 Northeast Blackout.
ICAO. (2025). ICAO Assembly Condemns GNSS Radio Frequency Interference Originating from the DPRK and the Russian Federation. ICAO. https://www.icao.int/news/icao-assembly-condemns-gnss-radio-frequency-interference-originating-dprk-and-russian. Summary: ICAO 42nd Assembly condemned Russia and North Korea for recurring GNSS interference constituting infractions of the 1944 Chicago Convention, based on evidence from six EU member states.
ICAO. (2025). Assembly 42nd Session Executive Committee Working Paper 553. ICAO. https://www.icao.int/sites/default/files/Meetings/a42/Documents/WP/wp_553_en.pdf. Summary: Documents that ITU geolocated GNSS interference sources to Russian territory in March 2025, and that Russia failed to respond to the ICAO Council’s formal 30-day letter.
Inside GNSS. (2018). Financial Networks Shifting to GPS-Stamped Precise Time. Inside GNSS. https://insidegnss.com/financial-networks-shifting-to-gps-stamped-precise-time/. Summary: Details EU MiFID II directive requiring all trading venues and institutions to synchronize clocks, driving universal GPS timing dependency in global financial markets.
Kuehne+Nagel. (2024). GPS Jamming Shows Ships in Impossible Locations. myKN/Kuehne+Nagel. https://mykn.kuehne-nagel.com/news/article/gps-jamming-shows-ships-in-impossible-locatio-09-Apr-2024.Summary: Confirmed 227 vessels spoofed in the Black Sea during the same week 117 ships appeared at Beirut Airport, linking the events to Israeli GPS countermeasures.
Le Gargasson C, Black J (2025). Electromagnetic Warfare: NATO’s Blind Spot Could Decide the Next Conflict. RAND Europe. https://www.rand.org/pubs/commentary/2025/11/electromagnetic-warfare-natos-blind-spot-could-decide.html. Summary: Documents Russia’s 400+ radar sites, 14 military EW units, and deeply integrated electronic warfare doctrine, identifying NATO’s electromagnetic domain as its most critical capability gap.
Lloyd’s List. (2024). War-Zone GPS Jamming Sees More Ships Show Up at Airports. Lloyd’s List. https://www.lloydslist.com/LL1148748/War-zone-GPS-jamming-sees-more-ships-show-up-at-airports.Summary: Vessel-tracking data showing 117 commercial ships falsely positioned at Beirut Airport on April 4, 2024, due to Israeli GPS spoofing as drone defense.
Lombardi M (2016). Accurate, Traceable, and Verifiable Time Synchronization for World Financial Markets. Journal of Research of the National Institute of Standards and Technology. https://tf.nist.gov/general/pdf/2868.pdf.Summary: NIST documentation of GPS-based precision timing infrastructure serving stock exchanges in the United States, Europe, and Asia, with DTCC settling approximately $24 quadrillion annually.
Lombardi M (2021). An Evaluation of Dependencies of Critical Infrastructure Timing Systems on the Global Positioning System (GPS). NIST Technical Note 2189. https://www.gps.gov/sites/default/files/2025-07/NIST.TN_.2189.pdf. Summary: Comprehensive evaluation of GPS timing dependencies in U.S. stock exchanges, power grid synchrophasor systems, and telecommunications, documenting that GPS dependency was engineered into infrastructure from inception.
DLR. (2025). Towards Standardisation: Satellite-Independent Navigation in the Baltic Sea. German Aerospace Center. https://www.dlr.de/en/latest/news/2025/towards-standardisationsatellite-independent-navigation-in-the-baltic-sea. Summary: Documents R-Mode terrestrial navigation system with eight transmitters across 800 km, IALA Guideline 1187 standardization, and ORMOBASS project expansion targeting operational capability by end of 2026.
European Commission. (2025). EU Welcomes UN Aviation Agency’s Condemnation of Russia for Undermining Global Aviation Safety. European Commission. https://transport.ec.europa.eu/news-events/news/eu-welcomes-un-aviation-agencys-condemnation-russia-undermining-global-aviation-safety-2025-10-03_en. Summary: EU Transport Commission statement welcoming ICAO’s condemnation as unequivocal recognition that GNSS interference violates the Chicago Convention.
GPS World. (2015). Going Up Against Time: The Power Grid’s Vulnerability to GPS Spoofing Attacks. GPS World. https://www.gpsworld.com/wirelessinfrastructuregoing-against-time-13278/. Summary: University of Texas Radionavigation Laboratory experiments demonstrating successful GPS spoofing of phasor measurement units, with phase-angle errors sufficient to trigger automatic control actions in power grid systems.
GPS World. (2025). Hoptroff to Deliver Resilient Precision Timing to Financial Markets Through LSEG’s Platform. GPS World. https://www.gpsworld.com/hoptroff-to-deliver-resilient-precision-timing-to-financial-markets-through-lsegs-platform/. Summary: London Stock Exchange partnership with Hoptroff for terrestrial precision timing, reflecting the financial sector’s recognition that GPS-dependent timing infrastructure requires resilient alternatives.
Heise Online. (2025). 39C3: Navigation System R-Mode Against the Baltic Jammer. Heise Online. https://www.heise.de/en/news/39C3-Navigation-system-R-Mode-against-the-Baltic-Jammer-11125406.html.Summary: DLR researchers presented R-Mode at 39C3, reporting 10-meter accuracy in testing, rubidium atomic clock synchronization, and a 300-kilometer range covering the entire Baltic Sea.
Newsweek. (2025). Russia Responds to GPS Jamming Accusations After EU Chief’s Plane Targeted. Newsweek. https://www.newsweek.com/russia-responds-gps-jamming-accusations-after-eu-chiefs-plane-targeted-2122612.Summary: Kremlin spokesperson Peskov denied Russian involvement in the von der Leyen GPS jamming incident, while multiple European officials characterized the interference as deliberate hybrid warfare.
PBS News. (2025). What to Know About Russia’s GPS Jamming of a European Official’s Plane. PBS. https://www.pbs.org/newshour/world/what-to-know-about-russias-gps-jamming-of-a-european-officials-plane.Summary: Analysis noting that Russian authorities appreciate the second-order effect of GPS disruption in creating strategic disquiet among neighboring nations, even if the primary intent is drone defense.
Spire Global. (2025). GNSS Interference Report: Russia 2024/2025, Part 1 of 4: Kaliningrad and the Baltic Sea. Spire Global. https://spire.com/blog/space-reconnaissance/gnss-interference-report-russia/. Summary: Satellite-based monitoring confirming maritime GPS jamming from Kaliningrad strong enough to affect flight navigation, with Tobol system deployments and 84 hours of interference detected in six months of 2024 monitoring.
American Banker. (2020). The Cybersecurity Threat Lurking in the GPS Systems Banks Count On. American Banker. https://www.americanbanker.com/news/the-cybersecurity-threat-lurking-in-the-gps-systems-banks-count-on.Summary: Reports that SEC Rule 613 mandates 50ms clock synchronization for U.S. equity and options markets, with tens of millions of ATM and point-of-sale nodes dependent on GPS timing and lacking standardized backup architecture.