Specifications

BATS AND PORTABLE BATS OPERATION
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ters/second velocity of sound and an Interrogation Interval of 2 seconds, the maximum range is
about 3000 meters. The Pulse Width must be set to be compatible with the responder in use. Se-
lect Trigger Source, either Internal or External.
3.4.3 FIXED (ARTIFICIAL) TARGET
From the Beacon Parameter dialog box select SETUP Tab and choose a target number/symbol. Un-
der Beacon Status select Fixed Target. In the box below it enter in the target’s bearing and hori-
zontal distance. Select BEARING and enter a value between 0° and 359°, select HORZ RANGE and
enter a value between 1 and 10000 meters.
The total number of targets allowed is four, therefore if two targets are actively being tracked then
up to two Artificial targets can be enabled. A horizontal range and bearing to a target (with respect
to the pitch/roll center of the vessel) is sent to the RS-232 port or entered from the keypad. The
position information obtained for an artificial target could be from a sonar or radar system which
detects a target (underwater or surface) and determines the range and bearing to it. The range
and bearing information has to be corrected for the differences in position between the BATS hy-
drophone and the sonar/radar transducer (E.g., an offset must be applied so that the data is rela-
tive to the vessel’s pitch/roll center). This corrected data is then sent to the Trackman via the RS-
232 port or manually updated from the keypad/mouse.
If the Transceiver has an external compass input, the artificial target data is corrected for NORTH.
For example, if the vessel heading is 30° and the bearing of the artificial target, relative to the bow
of the vessel is 90°, then the artificial target is compass corrected and plotted at 120°.
NOTE: The compass heading is only updated if a xponder or pinger is being tracked other-
wise the last compass heading received is displayed.
The artificial target data is shown in the Status Block at the bottom of the screen and also sent out
the RS-232 port just as if it were a tracked target.