Antenna
.-el,
Mast,
Etc:
'
Secindary
Reflection
CKP
screen
,\\\\\I1
I
I//,
-
-
-
Real
Echo
,
en.
<
~
*
,
,
////Ill1
Ill\\\
..
-
Ghost
Echo:
I\\
Fig.
3
-
5
Virtual
or
Ghost Echoes
Muitiple Echoes
When there are vertical reflective surfaces at short
range, for instance, when your ship passes a larger ship,
the pulsed waves emitted from your radar will bounce back
and forth between the two ships (Fig.
3
-
6).
As
a result,
a few equi
-
distant echoes may appear in the same bearing
on
the screen. These echoes are called multiple echoes.
ihey disappear
as
your shi;: moves away or changes bearing
from the reflecting target.
t
Fig.
3
-
6
Multiple Echoes
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