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The Invisible War in Ukraine Being Fought Over Radio Waves

 

Using electromagnetic waves to flummox and follow smarter weapons has become a critical part of the cat-and-mouse game between Ukraine and Russia. The United States, China and others have taken note.

The drones began crashing on Ukraine’s front lines, with little explanation.

For months, the aerial vehicles supplied by Quantum Systems, a German technology firm, had worked smoothly for Ukraine’s military, swooping through the air to spot enemy tanks and troops in the country’s war against Russia. Then late last year, the machines abruptly started falling from the sky as they returned from missions.

“It was this mystery,” said Sven Kruck, a Quantum executive who received a stern letter from Ukraine’s Ministry of Defense demanding a fix.

Quantum’s engineers soon homed in on the issue: Russians were jamming the wireless signals that connected the drones to the satellites they relied on for navigation, leading the machines to lose their way and plummet to earth. To adjust, Quantum developed artificial intelligence-powered software to act as a kind of secondary pilot and added a manual option so the drones could be landed with an Xbox controller. The company also built a service center to monitor Russia’s electronic attacks.

“All we could do is get information from the operators, try to find out what wasn’t working, test and try again,” Mr. Kruck said.

A battle is raging in Ukraine in the invisible realm of electromagnetic waves, with radio signals being used to overwhelm communication links to drones and troops, locate targets and trick guided weapons. Known as electronic warfare, the tactics have turned into a cat-and-mouse game between Russia and Ukraine, quietly driving momentum swings in the 21-month old conflict and forcing engineers to adapt.

“Electronic warfare has impacted the fighting in Ukraine as much as weather and terrain,” said Bryan Clark, a senior fellow at the Hudson Institute, a think tank in Washington, adding that every operation in the conflict now has to take into account enemy moves in the electromagnetic spectrum.

Electronic warfare has been a feature of wars for more than 100 years. During World War II, the British mimicked German radio signals to deceive targeting systems that bombers used, which Winston Churchill popularized as the “battle of the beams.” In the Cold War, the Soviet Union invested heavily in electronic weapons to gain an asymmetric advantage against the missiles and planes from the United States.

In recent decades, the use of electronic attack and defense has been more lopsided. In the Iraq war in the 2000s, the United States used gadgets called jammers to create so much radio noise that improvised explosive devices could not communicate with their remote detonators. More recently, Israel has jumbled GPS signals in its airspace with electronic warfare systems to confuse would-be attacks from drones or missiles.

The war in Ukraine is the first recent conflict between two large and relatively advanced armies to widely deploy electronic warfare abilities and evolve the techniques in real time. Once the purview of trained experts, the technologies have spread to frontline infantry troops. Ukrainian drone pilots said they constantly fine-tuned their methods to parry the invisible attacks. One day, a new radio frequency might work, some said. The next, a different antenna.

The tactics have become so critical that electronic warfare received its own section in a recent essay by Gen. Valery Zaluzhny, Ukraine’s top military commander. “Widespread use of information technology in military affairs” would be key to breaking what has become a stalemate in the conflict with Russia, he wrote.

The techniques have turned the war into a proxy laboratory that the United States, Europe and China have followed closely for what may sway a future conflict, experts said.

Gen. Charles Q. Brown Jr., the chairman of the Joint Chiefs of Staff, raised the topic of electronic warfare this year in prepared remarks for a Congressional hearing. NATO countries have expanded programs to buy and develop electronic weapons, said Thomas Withington, an electronic warfare expert at the Royal United Services Institute, a British security think tank.

“The war in Ukraine has been the performance enhancing drug for NATO’s electromagnetic thinking,” he said. “It has been the thing that concentrates minds.”

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