Onwa Marine Electronics KR-1338C v.1 - Manual (Page 46)

4.3 Indirect Echoes
Figure 4-2 Side-lobe echoes
Main-lobe
Antenna
Side-lobe
Sprious
target
True echo
Figure 4-3 Indirect echoes
Direct
Indirect
Heading
True
True
Bridge
Indirect
Indirect
Own
Target
path
Antenna
Obstruction
Direct Heading
Target
path
path
echo
echo
echo
echo
Indirect
ship
echo
Iine
Iine
Indirect
path
(mast,funnel
etc.).
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