Racons - Simrad R5000 Operator's Manual

38
C
Radar antenna beamwidth
D
Own ship position
Recommended settings for radar-SART detection
To best detect a radar-SART signal, adjust the settings as follows:
• Set the range scale between 6 and 24 NM
- The spacing between responses is too small to be distinguished at higher scales (0.64
NM)
- The length of the radar-SART response (12 dots) may be extended to 9.5 NM beyond
the position of the radar-SART, and it is necessary to see more than one response dot
to distinguish the radar-SART from other responses
• Set the sea clutter control to manual mode and adjust it to minimum
- A high value could remove the SART response
Ú Note:
With a minimum value for SEA anti-clutter, ships inside the clutter range may not
be visible to the radar.
If the sea clutter is strong when the SEA anti-clutter control is set to minimum, the first
few dots of the radar-SART response might not be detectable. In such conditions, the
position of the radar-SART may be estimated by using the EBL/VRM off center function
and measure 9.5 nautical miles from the farthest dot back towards own ship.
• Set the rain anti-clutter control to manual mode, and adjust as required to avoid rain
clutter
- The setting does not affect the radar-SART detection
• Set the gain control to manual mode, and adjust it to see some noise dots in the
background
- Normal gain setting for long range detection can usually be used (around 80% of max
range)
Turn OFF target boost. See "Target boost" on page 55
•
- The shape and dimension of the radar-SART dots could be affected by this setting.
Warning:
The operator should take care when using the radar with these
settings. The detuned radar will not be able to see and track targets as well
as it will when it is tuned, and the anti-collision functions may no longer be
working. The tuning should be returned to normal as soon as possible.

Racons

A racon (radar beacon) is a radar transponder commonly used to mark maritime navigational
hazards.
A racon responds to a received radar pulse by transmitting an identifiable mark back to the
radar. The displayed response has a length on the radar display corresponding to a few
nautical miles, encoded as a Morse character beginning with a dash for identification. The
inherent delay in the racon causes the displayed response to appear behind the echo from
the structure on which the racon is mounted (A).
Targets | R5000 Operator manual
A