3. Multi-Static Passive Radar
Instead of requiring specialised transmitters, multi-static passive radar systems use already-commercial radio and television broadcasts as light sources. Among numerous benefits this creative approach provides are improved stealth detection powers and lower running expenses. The technology tracks exactly without using any radar by matching the direct signals from commercial broadcasts with their reflections off possible objects. This makes the system extremely energy-efficient and environmentally friendly as well as rather successful against stealth aircraft meant to avoid conventional active radar systems.
