India’s Anti-Stealth Radar Network: After Operation Sindoor, India clearly saw that its air defence system needed a big upgrade. Modern wars now use very advanced planes and drones that are hard to see on radar. Because of this, the government launched “Mission Sudarshan Chakra”. Under this mission, the Defence Research and Development Organisation, along with other defence agencies, will build new radar systems that can spot stealth aircraft and other hidden threats.
The danger from stealth technology is growing fast. Many countries now use fifth-generation fighter jets, drones and cruise missiles that stay almost invisible to normal radars. China already flies many stealth aircraft and unmanned systems. These machines have a very low radar cross-section, which means normal radars struggle to see them.
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This gives a strong advantage during war. Global conflicts like the Russia-Ukraine war and recent fighting around Gaza and Iran have pushed countries to invest more in stealth planes and hypersonic missiles. India has also moved faster by working on the Advanced Medium Combat Aircraft programme and by improving systems that can fight stealth threats.
How India’s Anti-Stealth Radar Network Works?
India has now created what officials call an “anti-stealth radar grid”. This new system aims to give India a strong edge in air defence technology. The key part of this setup is the “Passive Coherent Location Radar (PCLR)”. This radar now forms an important piece of the national “Low Observable Detection Network (LODN)”. The main job of this network is to find and follow stealth aircraft and other low-visibility targets that normally escape traditional radars.
India already uses many kinds of radars that work on different frequencies. These include VHF-band radars, long-range low-level radars and systems like the Vostok-D. Each radar type has its own strength. Stealth planes often avoid detection by using gaps between these systems. PCLR helps close those gaps and makes detection stronger.
PCLR works in a very different way from normal radar. It does not send out any signal at all. Instead, it listens. It uses signals already floating in the air, especially FM radio broadcasts. When an aircraft or drone flies through these signals, it bends or changes them. PCLR studies these changes to find and track the target. Since it stays silent, the system never shows its own location.
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This System is Important in India
India needs strong air defence because it has long borders and constant security risks from nearby countries. Modern wars also use many missiles and drones. India already uses systems like Akash, S-400 Triumf, Barak-8 and SPYDER. These systems protect different heights and distances.
Experts say this new setup can help India detect fifth-generation fighters like the US F-35, Russia’s Su-57 and China’s J-35. PCLR works as a passive multistatic radar. This means many receivers sit in different places and watch the same target from many angles. This makes the system very hard to find or destroy because there is no single transmitter to attack.
Another big strength comes from low-frequency signals. Stealth aircraft usually defeat high-frequency radars, but they struggle against low-frequency ones. PCLR uses this weakness well. Because it stays passive, enemy forces cannot easily detect it with electronic tools. Anti-radiation missiles also fail because they need radar emissions to lock on. Jamming FM radio signals on a wide scale is also very hard and causes political problems, so enemies cannot easily block PCLR.
Inside the LODN, PCLR does not replace other radars. It works with them. VHF radars warn early. High-frequency radars guide weapons. PCLR adds a quiet layer that confirms targets and improves accuracy.
