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Summary for: Czechia's radar expertise gets a global stage in the Strait of HormuzWhen Britain and France convened a video conference of 40 countries this week to discuss security in the Strait of Hormuz, Czechia arrived with a concrete offer: passive radar technology that analysts say places the country among the leaders in a field increasingly central to modern warfare.
Prime Minister Andrej Babiš said Czechia would contribute its DPET passive radar system to a potential multinational mission in the strait once the current conflict subsides. The waterway, a critical chokepoint for Persian Gulf oil exports, has been effectively disrupted by the ongoing war between the United States, Israel, and Iran.
“We’re offering what we’re good at. Our military has always had a good reputation within NATO,” Babiš said on Friday.
What passive radar does
Passive radar systems differ from conventional radar in a key way: they do not emit signals. Instead, they detect and analyse existing electromagnetic emissions such as radio, television, or mobile networks reflected off objects in the air or at sea.
Because they are silent, they are far more difficult to detect or target, making them particularly valuable in contested environments.
Pardubice-based company ERA is one of the best-known global producers of this technology. Its systems, including the PLESS family, are capable of tracking hundreds of objects simultaneously at ranges of up to several hundred kilometres, including aircraft, drones, and maritime targets.
According to Czech defence industry sources, the DPET system referenced by Babiš is a mobile version designed for rapid deployment. It can track large numbers of targets in real time and is intended for use in both military and civil surveillance operations.
Babiš described the system as “a unique device” and pointed to Czech expertise within NATO in advanced surveillance technologies.
How Czechia became a radar leader
Czech radar expertise has deep industrial roots dating back to the post-war era, when Czechoslovakia built a strong state-led electronics industry centered on Tesla Pardubice. Research institutes and technical universities helped develop early microwave and radar technologies. During the Cold War, engineers in Czechoslovakia focused heavily on passive surveillance systems, including the Tamara radar, which evolved into today’s VERA and ERA systems capable of detecting even stealth aircraft. This niche focus, combined with strong technical education, helped establish Czechia as a recognized radar producer within NATO.
Why Hormuz
The Strait of Hormuz, at its narrowest point just 33 kilometers wide, is one of the most important global energy chokepoints, carrying a significant share of the world’s oil exports from the Persian Gulf.
The current security environment has increased interest in technologies capable of detecting small or low-flying objects such as drones, which have become a recurring feature of regional tensions.
However, analysts caution that Czech involvement would likely be supportive rather than decisive.
“Allies already operate a range of radar systems in the region, both active and passive,” said Vlastislav Bříza from Charles University’s Faculty of Social Sciences. “This would be a useful addition, but not a game-changer.”
The Czech Republic plans to offer a passive radar system to help secure the Strait of Hormuz as part of a multinational mission led by Britain and France, following conflict in the region. Supporters say it highlights Czech defense expertise, while critics question involvement in overseas security operations. What do you think?
He added that the offer also allows the country to showcase its technology on an international scale. “Czechia is among the leaders in radar production. There is also a degree of signaling here; it showcases domestic defense capabilities.”
Any deployment would still require parliamentary approval in Prague, and no formal mandate or timeline has been confirmed.
The Czech Army itself continues to invest in the passive radar technology. Last year, it ordered three PLESS radar units from ERA for CZK 2.3 billion, though delivery is still pending.
