What is "multiscan"

Usage examples of "multiscan".

The S-300 air defense system, one of the best all-altitude long-range surface-to-air missile systems in the world, had managed to pick up the low-flying helicopter ninety kilometers away even though it was only four hundred meters above the desert-the S-300's powerful multiscan radar could pick up aircraft as low as thirty meters' altitude or as high as thirty thousand meters and as far as three hundred kilometers away.