Specifications

GLOSSARY OF TERMS
v
NAME
DESCRIPTION
Azimuth
Typically used when referencing a target position with respect to North or a
compass heading. (Could also refer to a compass heading referenced to
north.)
BATS
Stand for Broadband Acoustic Tracking System. EdgeTech’s Model 4460C or
4461C USBL Tracking System. A Spread Spectrum, high accuracy, USBL
Tracking System. For survey quality underwater navigation.
Beacon
Any underwater sound source. Sometimes abbreviated as "BCN".
Bearing
Typically used when referencing target position with respect to local coordi-
nates, for example with respect to the hydrophone or vessel bow.
Broadband
A signaling method in which the frequency is spread across a wider band.
This would typically provide for higher data rates in communications but in
the case of the BATS provides for improved detection and higher noise re-
jection.
Consecutive
Tracking
Tracking of more than one target by alternating (cycling through) the inter-
rogation signals between all of the targets.
Depression An-
gle
The downward angle measured from the plane of the hydrophone receive
elements to the target. (0 deg. to 90 deg.)
Horizontal
Range
The distance from the hydrophone or offset point to the target on the X, Y
plane. (plan view)
Hydrophone
An underwater listening device.
Interrogate
To cause a response from an underwater device such as a transponder.
IPS
IPS is a Windows® based program that interfaces to DGPS and Trackman
for lat/long positioning. (Integrated Positioning System)
Pinger
An underwater sound source which transmits at a fixed preset rate, asyn-
chronously to a tracking device. (Not available on BATS.)
RS-232 Inter-
face
A standard interface for serial communications.
Responder
An underwater sound source which responds to an electrical signal (interro-
gated via a hardwired link) and returns with an underwater acoustic reply.
Sometimes abbreviated as "RSPDR".
Simultaneous
Tracking
Ability to track more than one target at the same time, either by triggering
synchronously or asynchronously as long as the replies do not arrive at the