Russia Tests ‘Invisible’ Radar to Dodge Enemy Detection, Developer Says
Russia has tested a new radar system that can evade detection by enemy drones or aircraft, its developer told the state-run RIA Novosti news agency on Friday.
Passive radars
operate without a transmitter, instead receiving signals from other objects to track targets.
Tropa (Russian for “path”)
Russia’s new passive radar, called Tropa (Russian for “path”), uses communication towers to locate signals without transmitting one itself, RIA Novosti reported.
The Moscow Times