Solid State Radar - Furuno FAR-2218-BB Operator's Manual

2. RADAR OBSERVATION
2.6

Solid state radar

In Solid State radars, long-range and short-range pictures are mixed before they are
displayed on the screen. Due to this mixing process, echoes may be displayed differ-
ently when compared with magnetron radars.
Range and signal intensity
At long-range, even though the Solid State radar has lower transmission power than
magnetron radars, the signal intensity is equivalent.
At short-range on the other hand, due to the lower transmission power the signal in-
tensity of closer targets (including sea clutter and rain clutter) is reduced.
For this reason, when a long-range target enters short-range the signal intensity ap-
pears weaker.
False echoes fore and aft of the target
At long-range, echoes with a strong reflection may appear with a false echo to their
fore and aft. When the target changes direction, the reflection may weaken, causing
the false echoes to disappear. You can also reduce the false echoes in these cases
by reducing the gain.
2-8
Approx. 0.5 NM to 2 NM Approx. 0.5 NM to 2 NM
(depending on the pulse length) (depending on the pulse length)
False echoes
: Short-range
: Long-range
Echo