Electronic Warfare Ukraine 2026: EW Systems, Drone Jamming, and the RF Spectrum Battle

1. Overview: An Unprecedented EW Environment

The Russia-Ukraine war has generated the most intensive electronic warfare environment of any conflict since World War II. Every part of the electromagnetic spectrum relevant to military operations — radio communications, satellite navigation, radar, cellular networks, drone control frequencies, satellite communications uplinks — is actively contested. The density of EW assets per kilometer of front exceeds anything observed in post-Cold War conflicts including Afghanistan, Iraq, or Syria.

This intensity reflects both adversaries' investments. Russia entered the war with extensive EW capabilities developed through decades of investment and observation of Western air campaigns against radar-dependent air defense. Ukraine entered the war with limited EW assets but has rapidly developed and acquired capabilities through partnerships with Western intelligence services, commercial technology adaptation, and accelerated domestic development. The EW contest has shaped drone warfare, communications security, artillery effectiveness, and cruise missile intercept in ways that ripple through nearly every tactical domain.

2. Russian EW Systems Deployed

Russia has deployed a comprehensive array of EW systems in Ukraine:

• Krasukha-4 (1L257): Long-range multi-function EW complex; designed to suppress airborne radars (AWACS, JSTARS-equivalent) at ranges claimed up to 300 km; also capable of jamming satellite SAR (synthetic aperture radar) reconnaissance signals; provides strategic-level radar countermeasure capability; typically deployed in brigade-level formations
• Krasukha-2 (1L266): Similar strategic jamming system targeting lower-frequency radar bands; complements Krasukha-4 in a spectrum-spanning suite
• Borisoglebsk-2 (RB-301B): Tactical broadband jamming complex covering HF/VHF/UHF bands; designed to jam combat communications at tactical level; each Borisoglebsk-2 system can simultaneously target multiple frequency bands; typically deployed at regimental/division level
• Leer-3 (RB-341V): UAV-based cellular exploitation system using Orlan-10 drones equipped with IMSI-catcher payloads; capable of intercepting mobile phone traffic, geolocating SIM cards, and broadcasting mass SMS messages for psychological operations; used against Ukrainian soldiers for both intelligence collection and demoralization messaging
• Pole-21: GNSS (GPS/GLONASS) denial system; deploys jamming transmitters on mobile platforms and communications towers along the front; creates area-denial zones where GPS-dependent navigation and weapon guidance is degraded; reported as particularly dense in Zaporizhzhia and Donetsk sectors
• Zhitel (R-330Zh): Satellite communications jamming system targeting Thuraya, Iridium, and other SATCOM solutions; also targets GPS L1/L2 frequencies; deployed in vehicle-mounted configuration
• Khibiny EW pods (L175V): Airborne self-protection jamming pods on Su-34/Su-35 aircraft; protect Russian strike aircraft from missile locks; well-documented capability; the USS Donald Cook incident (2014) brought Khibiny to international attention

3. GNSS and GPS Jamming Campaign

Russia's GNSS denial campaign is among the broadest and most sustained electromagnetic interventions of the war:

• Russian Pole-21 and other GNSS jamming systems have created persistent GPS degradation zones extending 50–200 km from the front; commercial aviation has been affected, with multiple flight warnings and rerouting published by EUROCONTROL and ICAO for airspace over and adjacent to Ukraine, the Black Sea, Finland, and the Baltic region
• GPS spoofing — where the jammer transmits false GPS signals that mislead receivers into accepting incorrect position coordinates — has been intermittently observed; spoofed GPS can cause precision munitions to miss by large margins or navigation systems to lead vehicles into incorrect areas
• Impact on precision munitions: GPS-guided munitions (JDAM, Excalibur shell, HIMARS GMLRS) have shown reduced effectiveness in heavily jammed environments; Ukraine and Western suppliers have responded with multi-modal guidance (INS + GPS + laser terminal) and specialized anti-jam GPS receivers that are more resistant to jamming; newer Excalibur-ER with AJ (anti-jam) GPS has been supplied; the US supplied JDAM with Inertial Measurement Unit (IMU) backup for GPS-denied operations
• Ukrainian adaptation: increased use of laser-guided and direct-attack munitions where GPS-denial is heaviest; combination guidance systems; terrain reference navigation (using radar altimeter comparison to terrain maps) for longer-range munitions

4. Communications Jamming and Exploitation

Both sides actively jam and exploit radio communications:

• Russian tactical VHF/UHF jamming using Borisoglebsk-2 and analogous systems has forced Ukrainian adapted communications protocols; early in the war, use of commercial radio and clear-text communications created significant SIGINT vulnerability; this has improved with Ukrainian adoption of encrypted communications and frequency-hopping radios
• Leer-3 cellular exploitation has been documented through Ukrainian prisoner of war testimonies and electronic forensics — Russian Orlan-10 drones with IMSI catchers overfly Ukrainian positions and collect phone IMSI/IMEI signatures; this geolocates the user's SIM card and allows Russian fires to target concentrations of active phones; Ukrainian troops have been given mobile phone discipline training as a tactical survival measure
• Ukraine has received Western secure communications systems — Harris AN/PRC-152/163 radios, HaveQuick frequency-hopping systems, and Type 1 encrypted tactical comms — that are significantly more EW-resistant than Soviet-era and commercial alternatives; this has improved Ukrainian communications security substantially from 2022 levels
• Russian use of clear text and vulnerable communications: captured Russian radio communications (published extensively on Ukrainian social media and OSINT channels) have demonstrated poor Russian communications security, particularly in early war periods; this has given Ukraine significant tactical intelligence advantage from communications intercept, though Russian COMSEC has improved in later war phases

5. The FPV Drone Jamming Arms Race

The competition between FPV drones and EW jamming systems defines a central technology race of the modern battlefield:

• Initial FPV vulnerability (2022–2023): First-generation commercial FPV drones used standard 2.4 GHz control links and 5.8 GHz video downlinks; these are standard commercial frequencies easily targeted by relatively simple jamming systems; Russia initially deployed commercial drone-counter systems and military UHF/VHF jammers that could disrupt FPV operations in specific frequencies
• Russia's first-generation counter (2023): Mobile FPV jammer vehicles — armored vehicles equipped with antenna arrays and wideband power amplifiers targeting FPV control frequencies; these created protection bubbles around key vehicles and positions; also deployed on armored infantry carriers (BMP, BTR) to provide EW self-protection from FPV attacks
• Ukraine's adaptive response (2023–2024): Frequency diversification (use of 900 MHz, 433 MHz, and other bands outside initial jammer coverage); spread-spectrum and frequency-hopping control systems (FrSky ACCESS, ExpressLRS rapid frequency change protocols); software-defined radio controllers that could reprogram frequencies remotely; the adaptation speed was higher than Russia's counter-adaptation speed, partly due to Ukraine's access to global commercial drone technology communities and Western SDR expertise
• Russia's second-generation counter (2024): Broadband wideband jammers covering 300 MHz–6 GHz simultaneously, making frequency-hopping less effective; static position-defense jamming domes (fixed installations covering entire grid squares); adaptive jamming that learns and follows frequency-hopping patterns
• Current status (2026): The FPV jamming environment is heavily contested; effective range of FPVs in high-EW environments is reduced; operators have adapted to shorter-range engagements, obstacle-following terrain hugging to stay below jammer line-of-sight, and fiber-optic guidance as the ultimate EW countermeasure

6. Fiber-Optic FPV: The EW-Immune Response

Fiber-optic guided FPV drones represent the most significant tactical EW countermeasure innovation of the war:

• A fiber-optic guided FPV pays out a thin optical cable from a spool as it flies; video and control signals are transmitted through the cable rather than via radio frequency; the drone has no RF emissions and cannot be jammed by any current deployed system — it is simply not an RF device during flight
• First reported field deployment approximately mid-2024; both Ukrainian and Russian forces have deployed fiber-optic FPVs; Ukraine appears to have deployed at larger scale initially, with Russian deployment accelerating through 2025
• Technical parameters: typical cable length 3–10 km; the cable constrains maximum operational range and limits drone agility (the cable creates some drag and can snag); but for anti-vehicle attacks at 3–10 km range, these are acceptable limitations
• Weight and size implications: the fiber-optic spool adds weight — typically 150–400 grams for cable spools of 3–8 km; this slightly reduces the explosive payload capacity or flight endurance; engineering tradeoffs between cable length, drone frame, and warhead size are active areas of development
• Counter-fiber-optic approaches: physical countermeasures (anti-drone nets, physical barriers) remain effective against fiber-optic drones; visual acquisition by counter-drone FPV teams; terrain features that snag the cable; but no RF-based counter is effective. This is the key asymmetry.
• AI-assisted terminal guidance: some fiber-optic FPVs use AI object recognition for terminal guidance when the human operator passes control to the AI in the final approach phase; this provides terminal guidance even if the cable is cut or signal degraded before impact

7. Starlink Jamming and SpaceX Countermeasures

Starlink's role in Ukraine's military communications — first deployed to Ukraine by SpaceX CEO Musk in February 2022 — has made it a major EW target:

• Russian jamming attempts against Starlink have targeted both the uplink (terminal to satellite) and downlink (satellite to terminal) signal bands; Russia has deployed ground-based jammers and reportedly attempted satellite-band jamming from vehicle and aircraft platforms
• First significant confirmed Starlink jamming: approximately mid-2022; Ukrainian military operators reported degraded performance in some sectors; Elon Musk tweeted that SpaceX had addressed the jamming "within hours" through a software patch — highlighting Starlink's software-defined adaptability as its key EW resilience asset
• SpaceX countermeasures: frequency band adaptations; phased-array beam steering (focusing signal beam to reduce jamming capture); satellite-side adaptations; classified additional countermeasures; SpaceX engineers have reportedly iterated on Starlink's EW resistance faster than Russia can develop counter-countermeasures
• Musk policy controversy: In September 2023, reporting revealed Musk had refused to enable Starlink coverage over Crimea in 2022 to prevent a Ukrainian underwater drone attack on the Russian fleet — a unilateral decision by a private company that affected military operations; this controversy highlighted the risks of military dependence on a single private commercial provider; Ukraine has since diversified to include OneWeb, ViaSat, and other SATCOM solutions
• Current status: Starlink remains operationally important for Ukrainian military communications at the tactical and operational level; degraded in highest-EW-intensity frontline areas but highly valuable for the rear communications network, drone operations coordination, and logistics; the dependence on a single commercial provider is recognized as a strategic risk that is partly but not fully mitigated

8. Ukraine's EW Capabilities

Ukraine has developed and received significant EW capabilities of its own:

• Antykorabel'na (AN-74 KROPYVA and derivatives): Ukrainian domestically developed EW intelligence and jamming platforms; capabilities classified but Western observers credit Ukraine with significantly improved EW collection and tactical jamming capacity from 2023 onward
• Western EW support (classified): US and allied intelligence agencies have provided Ukraine with significant signals intelligence support — real-time SIGINT feeds, communications intercept analysis, radar location data from platforms not directly deployed in Ukraine; this intelligence sharing function extends Ukraine's EW reach far beyond its own organic assets
• MALD and SEAD tools: Ukraine has received limited HARM (AGM-88) capability for SEAD; radar-hunting missions targeting Russian Krasukha-4 and air defense radars have been conducted throughout the war; this reduces Russia's ability to maintain constant EW asset positions by making them targetable if they emit for long periods
• Counter-drone EW: Ukraine has deployed multiple counter-drone EW systems targeting Russian FPV and reconnaissance drones; systems include Israeli-origin, British, and US-supplied drone jamming equipment as well as domestically developed solutions; effectiveness in reducing Russian drone reconnaissance over Ukrainian rear areas is significant
• Distributed sensing networks: Ukraine has built civilian-military integrated air raid warning systems leveraging mobile phone apps, distributed microphones, and radar data fusion; this supports EW geolocation of Russian airborne systems

9. Electronic Intelligence Collection

Electronic intelligence (ELINT) and signals intelligence (SIGINT) have shaped operational decisions throughout the war:

• Western RC-135 Rivet Joint SIGINT aircraft have flown consistently in international airspace adjacent to Ukraine, providing real-time intercept of Russian communications and radar emissions; this intelligence is shared with Ukraine and has contributed to tactical warning of strikes and identification of high-value Russian command nodes
• P-8 Poseidon maritime patrol aircraft have also provided SIGINT coverage in Black Sea adjacent areas — contributing to naval intelligence that supported Ukrainian naval drone operations
• Ukrainian SIGINT collection: The Security Service of Ukraine (SBU) and Military Intelligence (HUR) operate SIGINT collection programs that have provided intelligence on Russian unit positions, communications, and command arrangements; the dramatic improvement in Ukrainian targeting precision from 2023 onward partially reflects improved SIGINT-driven targeting
• Social media OSINT as EW complement: Open-source intelligence collection from Russian military social media, battlefield telegram channels, and geotagged photos has provided strategic-level intelligence that complements technical SIGINT; Ukraine's OSINT community and volunteer intelligence networks have proven operationally significant in ways that parallel technical EW functions

10. EW Systems Overview Table

11. EW Doctrine Implications for NATO

The Ukraine war is rewriting EW doctrine for NATO and Western militaries:

• GNSS denial is the default assumption: Every NATO platform and munition that depends primarily on GPS must now have a backup guidance mode designed assuming GPS is unavailable; this is driving multi-modal guidance investments across the missile and munition portfolios of all NATO members
• Organic EW capability at battalion level: The Ukraine war showed that brigade-level centralized EW cannot protect against decentralized drone threats; each maneuver battalion needs organic counter-drone EW assets — not just command-level systems; this is driving procurement reviews across NATO armies
• Software-defined EW is strategically decisive: The side that can update EW software and frequency profiles faster than the adversary adapts has a persistent advantage; this favors hardware-platform diversity but software-architecture standardization; the US's JADC2 (Joint All-Domain Command and Control) and equivalent programs are partly EW integration exercises
• RF emission control (EMCON) as a survival skill: Russian SIGINT has successfully geolocated Ukrainian headquarters and logistics nodes from their radio emissions; this has driven NATO exercises incorporating strict emission control protocols even in training environments; "if you emit, you die" has become a frontline axiom
• Counter-UAS and EW are inseparable: Drone defense cannot be separated from EW; every anti-drone system that uses radio jamming is an EW asset; every EW collection system that can locate drone operators is a counter-drone tool; the integration of c-UAS and EW into a single organic capability is a defining NATO procurement priority post-Ukraine

12. Assessment: Who Controls the Spectrum?

The electronic warfare balance in Ukraine in spring 2026 is contested with neither side enjoying unchallenged spectrum dominance:

• Russia's EW advantage at strategic level: Russia's Krasukha-4 and GNSS jamming capabilities provide strategic-level electromagnetic leverage — degrading Ukrainian use of GPS-guided munitions and potentially limiting the effectiveness of Western precision systems supplied to Ukraine; this is Russia's clearest EW advantage
• Ukraine's EW advantages at tactical level: Western SIGINT intelligence sharing, domestically adapted counter-drone EW, and the fiber-optic FPV innovation have given Ukraine tactical-level EW leverage that Russia did not anticipate; the inability to jam fiber-optic drones represents a Russia-specific EW gap with no near-term solution
• The software speed asymmetry: Ukraine, with direct access to Western commercial tech companies (Palantir, Amazon, Microsoft) and SIGINT expertise, adapts software-defined EW systems faster than Russia's largely state-controlled EW industrial base; this speed asymmetry has prevented Russia from achieving durable EW dominance despite its larger absolute investment
• The war has put EW on every NATO military agenda: Perhaps the most enduring consequence of the Ukraine EW contest is the transformation it has forced in NATO defense planning; EW investments that were underfunded across European armies for a decade are now priority acquisition programs; the Ukraine war has made EW real in a way that two decades of counterinsurgency did not