Sea-me
is an ACTIVE device which
receives an incoming radar signal, amplifies it and retransmits
it omnidirectionally in azimuth using a five stage amplifier.
The
effectiveness of a radar reflector is described by its Radar
Cross Section, measured in square metres. For a good passive
reflector this will typically have a maximum value of 10
square metres and a minimum of 2 square metres or less.
In contrast the equivalent figures for Sea-me are 63 square
metres and 8.9 square metres.
Sea-me
is thus roughly 6 times more efficient at returning
a radar signal than is a good passive reflector.
