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Maps |
Argus Radar Operator Manual
Maps
General information
The Video Maps are navigation graphic tools, composed by lines, text and symbols, to be
superimposed on the PPI. Their purpose is to help the operator to incr
ease the definition of
the coasts or restricted or dangerous areas. Each map consists of up to 120 segments, 32 texts
and 32 symbols, 184 elements in total. Symbols and texts should be used to better under-
stand what the lines and the areas represent.
The ARGUS display provides three types of Video Maps:
•
Relative Map, which follows the movement of own ship and is always in the same position
with respect to own ship and equally oriented in relation to own ship heading. All the map
coordinates are stored as distances from own ship.
•
Dead Reckoning Map, which is relative to land and to North (where it is calculated to be),
its position is calculated with own ship speed and course sources. All the map coordinates
are stored as distances from own ship, so it must always be loaded in the same place, to the
same heading (i.e. at mooring place).
•
Geographic Map. All the map coordinates are stored as geographic positions, and once it is
loaded, its elements are always drawn in the same absolute position (if EPFS is available).
¼
Note:
In case the EPFS or the Gyro is in failure or invalid, it is not possible to display Geograph-
ic Map. And in case of Log or Gyro failure also the Dead Reckoning Map is unavailable.
Operating with the Video Maps Menu, it is possible to perform many operations, such as:
•
Recall a stored Video Map
•
Create a new Video Map
•
Undisplay the selected Video Map
•
Move the selected Video Map
•
Rotate the selected Video Map.
Pressing the “Maps” button, the Video Maps Menu will show a list of what is stored in the sys-
tem maps and the three buttons, which allow the operator to perform the possible actions:
•
“Create New”, to create a new map and to enter it into the Maps Editing Window
•
“Open Map”, to load a map from the upper list (an item of the list must be selected). After the
selection, the map will appear on PPI and another window will be displayed
•
“Delete Map”, to delete a map, which is no longer wanted (an item of the list must be se-
lected). The system will ask to confirm the action before performing it
•
“Undisplay Map”, to disable the presentation of the map displayed on the screen. The same
action is available under the command “Clear Map”, when the editing menu is open.
When a map is presented on the PPI, its name is displayed in the last line of the own ship
window. The name also works as a command shortcut with trackball pushbutton functions
shown on the Help line.
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