Marine Sea Scan Manual page 42

38 Sea Scan® Survey Software Manual
shadow
side-scan SONAR
signal statistic
slant range
SOG
SONAR
starboard
swath
TCU
topside processor
towfish
transducer
true range (ground
range)
TVG
.sds
USB
UTM
Universal Length
object reduces as the outgoing acoustic wave
travels away from the source
The area that the sound wave cannot reach
behind an object because of the object's
protrusion above the sea floor; used to
determine the height of the submerged object
An acoustic imaging device used to provide
wide-area, large-scale images of the bottom of a
body of water
Statistical information on a ping, typically an
average, minimum, or maximum level
The straight-line distance from the towfish to an
object at any given location
Speed Over Ground
SOund Navigation And Ranging
The side of an object or ship
The total side-to-side coverage of the SONAR
signal on each sweep of the seabed; also called a
line
Topside Communications Unit
The control unit an operator uses on the towing
vessel to collect and observe the incoming data
from the transducers
The device that is towed through the water on
which the transducers are mounted
The projector and hydrophone that make up an
active SONAR system
The horizontal distance from the towfish to the
object or bottom location
Time-Varied Gain; a process where amplifier gain
is changed based on time and matched with
returning signals between outgoing pulses of
the side-scan SONAR
SONAR Data Stream, the extension that the
software attaches to the names of data files
Universal Serial Bus
Universal Transverse Mercator, a coordinate
mapping system that maps to a grid rather than
to latitude/longitude
A standard for measurement of areas in user-
© 2013 Marine Sonic Technology, Ltd.