JRC JMA-5206 Instruction Manual page 196

[Page 1] [5] Auto SEA/RAIN (Auto STC/FTC)
• Detects unwanted waves such as rain/snow clutter and sea clutter and automatically suppresses them.
• When the sea state or weather changes, this function automatically performs suppression processing
in accordance with the situation.
• Suppression processing is not full automatic, and requires the operator to control the afterimages of
unwanted waves.
• To control the afterimage of sea clutter, use the [SEA] control.
• To control the afterimage of rain/snow clutter, use the [RAIN] control.
• In areas where the density of unwanted waves is low, unwanted waves may remain being judged as
targets. Thus, use the automatic clutter suppression mode together with the video process mode.
• Characteristics of the automatic clutter suppression function:
OFF:
AUTO SEA:
AUTO RAIN: Along with AUTO SEA, AUTO RAIN automatically detects the strength of
[Page 2] [1]-[7] PL (Pulse Width)
• Sets the standard transmitter pulse length in each range.
• When the range is called, the pulse range is used.
[Page 3] [1]-[7] Radar signal processing settings (Process Setting)
• Same functions as those in the Process Setting Menu generally used
[Page 4] [1]-[7] Radar trails settings (Trails Setting)
• Same functions as in the Trails Setting of the RADAR Menu generally used
Disables the automatic clutter suppression function.
Select OFF when rain/snow clutter and sea clutter are not strong or when the ship
is in a bay.
Automatically detects the strength of sea clutter, and performs the most suitable
sea clutter suppression processing.
Even when the strength of sea clutter varies depending on the wind direction,
AUTO SEA performs the most suitable suppression processing.
Land like islands can be displayed naturally.
Since rain clouds outside sea clutter areas are recognized as land, there is no effect
of suppressing rain/snow clutter.
rain/snow clutter, and performs the most suitable rain/snow clutter suppression
processing.
When rain clouds are scattered about, AUTO RAIN performs rain/snow clutter
suppression processing for only the rain-cloud areas.
Since land is recognized as rain clouds, land videos become obscure.
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