COLOGNE, Germany — The German Air Force has begun testing so-called passive radar as a complementary surveillance technique for ground-based air defense formations, aimed at helping covert operations ...

Add Yahoo as a preferred source to see more of our stories on Google. GRAZ, Austria — German sensor specialist Hensoldt has released a standalone package of its Twinvis passive radar, a technology ...

It is an old trope in submarine movies. A sonar operator strains to hear things in the ocean but dares not “ping” for fear of ...

PM Andrej Babiš proposed deploying passive radar to the Strait of Hormuz, citing Czechia's history of radar expertise.

The Czech Republic is prepared to offer a passive radar system to help secure the Strait of Hormuz once the situation in the region stabilizes, Prime Minister Andrej Babiš said on Friday. Speaking to ...

U.S. stealth aircraft like the F-35 Lightning II are often described as “invisible” to enemy radar, but that label oversimplifies a complex technical reality. While low-observable technology ...

Sean Peters is leading a major multi-institutional initiative to develop power efficient passive radar systems that could peek under the surface of Mars. Peters has earned a $2.45 million, three-year ...