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[3] Auto DR Control
･ When the automatic sea clutter suppression mode and the automatic rain/snow clutter suppression mode
are in use, the dynamic range is automatically controlled.
･ When the automatic sea clutter suppression mode is in use, this function improves gain by widening the
dynamic range of only areas where sea clutter is strong and narrowing the dynamic range of areas where
sea clutter is not detected.
･ When the automatic rain/snow clutter suppression mode is in use, this function improves gain by
widening the dynamic range of areas where sea clutter and rain/snow clutter are strong and narrowing
the dynamic range of the other areas.
･ Land videos become obscure when the automatic rain/snow clutter suppression mode is in use.
Off : Does not control the dynamic range automatically. (Standard setting)
The dynamic range is set in the same manner as when the manual sea clutter
suppression mode or the manual rain/snow clutter suppression mode is in use.
On : Automatically controls the dynamic range.
[4] Process Switch
･ This function sets a specific area and switches the video process mode between the inside and outside of
the area.
･ In [5] 2nd Process Mode
, set the second video process mode for the area outside the boundary.
･ In [2] PROCESS of Main Menu , set the first video process mode for the area inside the boundary.
･ Gain at a distance can be improved by suppressing near sea clutter through the correlative process.
･ There are two methods for setting an area:
Off : Disables the Process Switching function. (Standard setting)
Range Fix : Sets a boundary at a constant range from the center.
Set the boundary range in [6] Process Switch Range.
The specific area turns out to be a circle with the own ship’s position as
the center.
AUTO : Automatically sets a specific area.
The area subject to many clutter returns is inside the boundary, and the
area less subject to clutter returns is outside the boundary.
[5] 2nd Process Mode
･ Set the second video process mode for the outside of a specific area.
･ This function is enabled when Range Fix or AUTO is selected in [4] Process Switching.
Video process modes
PROC Off : Select this mode in general.
3Scan CORREL : Select this mode when many rain/snow clutter returns are detected.
4Scan CORREL : Select this mode to highlight targets while suppressing sea clutter returns.
5Scan CORREL : Select this mode to detect small targets hidden by sea clutter returns.
Remain : Select this mode when own ship yaws wildly.
Peak Hold : Select this mode to detect small targets of which detection probability is low.
[6] Process Switch Range
･ Set the boundary range of a specific area.
･ This function is enabled when Range Fix is selected in [4] Process Switch.
･ The specific area turns out to be a circle with the own ship’s position as the center.
･ The boundary range can be set in units of 0.1 nm, ranging 0.1 to 25.5 nm.
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