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You don't need to go to HF to detect stealth aircraft. Even VHF will work. But it's not going to be accurate enough for targeting. Another approach is to passi
by sobriquet9 5y ago
You don't need to go to HF to detect stealth aircraft. Even VHF will work. But it's not going to be accurate enough for targeting.
Another approach is to passively listen for reflections of cell tower or FM radio signals. Stealth aircraft do not reflect much radio energy straight back at the source, but they do reflect it in other directions.
- touisteur 5y agoSo called 'passive' radars. FM radio, cell towers, and also dvb-t. Wonderful tech. Is there an actual (not toy or PoC) operational system deployed anywhere?
- sobriquet9 5y agoThere is no way to know. An actual operational system deployed anywhere would be impossible to detect. It does not transmit anything, and can use existing antennas for receiving the signals. Can be as simple as software update.
- touisteur 5y agoI know I know but some military might have bragged about it somehow...
- sudosysgen 5y agoVHF is now accurate enough for two-stage targeting. Basically you guide the missile close enough for its own radar/camera/ir sensor to lock on. VHF is inherently too inaccurate for a lock either. It just scales with how big the radar is.