User Guide

NOTE: Changing the digits in the Range and Bearing fields can only be accomplished by first
locking the field.Adjusting these two values moves the ruler in ways you might not
anticipate.These fields should only be locked if you know a bearing and range information
from a separate source, for instance radar or active sonar.
Center on Ruler: Click this button to bring the ruler to the center of the TMA Board.
Enter SOLN: Enters the current trial solution into the system and designates it as the current Firing
Solution
for this target. (Also called the system solution or TMA Solution.)
Seawolf TMA Data Display
Contact fields: The upper Contact field displays the contact ID that is selected in the Select drop-
down list and the second instance displays the contact ID that is selected in the
Merge drop-down
list. See Select Tracks below.
Source fields: The upper Source field displays the sensor source (e.g. Sphere or Towed) of the
contact selected in the
Select drop-down list and the second instance of the word displays the
sensor source of the contact selected in the
Merge drop-down list. See TMA Button Matrix/Select
Tracks below.
Firing solution: Also called the system solution, the values seen here are entered by clicking Enter
SOLN.They represent the current solution in use in the Fire Control system if this contact is
selected as a target.The range and bearing fields update based on the course and speed in use in
the Firing Solution.
Seawolf TMA Button Matrix
Select Tracks: Click to display the contact selection matrix and the following options:
Merge: Merges the contacts selected in the Select and Merge drop-down lists.
Split: Splits the merged contact (M contact) selected in the Select drop-down list into its two
original contact components.
Drop: Permanently drops the contact selected in the Select drop-down list.
Select Drop-down list: Displays the Contact IDs of all current contacts.When a contact is selected
here its bearing history is displayed on the TMA board.
Merge Drop-down list: Displays all Contact IDs except that of the contact selected in the Select
drop-down list.When a contact is selected here, its bearing history appears on the TMA board
along with that of the contact selected in the
Select drop-down list.
Back: Returns to the main level button matrix.
Time: The numbers seen in this matrix represent minutes of bearing history to be displayed on the
TMA Board.As long as a tracker is tracking, the bearings are plotted every 2 minutes, therefore 10
min = up to 5 bearing lines, 20 min = up to 10 bearing lines, etc. Options are 10, 20, 60 and 240
minutes.
Center on Ownship: Click to center the Ownship symbol at the center of the TMA Board.
Zoom In, Zoom Out and arrow buttons: Clicking these buttons adjusts the view on the TMA Broad.
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