16. RADAR OVERLAY
16-8
16.5 Error Sources for Radar Echo Image and TT Mis-
match
There are several reasons why the radar echo image and tracked target symbols do
not match exactly.
1. Different gyro value at radar overlay and at ECDIS.
2. Improper installation parameters (radar overlay bearing offset, radar overlay
range offset, conning position offset).
The example below shows how different gyro value set at radar overlay and at ECDIS
affect the display of the ECDIS.
Different gyro value at
radar and ECDIS
Equal gyro value at
radar and ECDIS
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