最終更新日：2024/08/07
(aviation) An obsolescent type of marker beacon, usually used to mark en route airways but occasionally used as part of a non-precision approach, which radiates in a pattern that is considerably wider, from the perspective of an aircraft approaching the marker along the airway, than it is long (allowing an aircraft to pick up the signal from the marker even if slightly to one side of the airway's centerline).
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fan marker
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fan marker
noun
(aviation)
An
obsolescent
type
of
marker
beacon,
usually
used
to
mark
en
route
airways
but
occasionally
used
as
part
of
a
non-precision
approach,
which
radiates
in
a
pattern
that
is
considerably
wider,
from
the
perspective
of
an
aircraft
approaching
the
marker
along
the
airway,
than
it
is
long
(allowing
an
aircraft
to
pick
up
the
signal
from
the
marker
even
if
slightly
to
one
side
of
the
airway's
centerline).
意味（1）
(aviation)
An
obsolescent
type
of
marker
beacon,
usually
used
to
mark
en
route
airways
but
occasionally
used
as
part
of
a
non-precision
approach,
which
radiates
in
a
pattern
that
is
considerably
wider,
from
the
perspective
of
an
aircraft
approaching
the
marker
along
the
airway,
than
it
is
long
(allowing
an
aircraft
to
pick
up
the
signal
from
the
marker
even
if
slightly
to
one
side
of
the
airway's
centerline).
