How does flying low keep you off the radar?
In: Technology
What others have said regarding terrain is true. That said, radar design is all about tradeoffs. If they’re good at differentiating target altitude, then they’re poor at something else, or at the very least they are more complex and expensive. Air defense radars are designed to detect targets in the air, and designers must often design them to be effective against “most” targets, or perhaps against the most dangerous targets. So, to cover the effective altitude of “most” targets, a radar might be designed to cover medium to high altitudes very well, but the trade-off is reduced detection at low altitudes.
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