Selectable Beam Density; Beam Modes; Table 6: Beam Modes With No. Of Beams And Swath Coverage - Teledyne SeaBat T Series Operator's Manual

SYSTEM PERFORMANCE AND DATA TYPES
7.2

Selectable Beam Density

Selectable beam density is a feature which allows the surveyor to decide how many beams to
form ranging from the maximum capability of the system down to just 10. This allows the surveyor
to be able to capture the highest detail using the highest beam density available, but alternatively
maximize efficiency by using fewer beams in very shallow water where data volumes traditionally
become large quickly due to high beam numbers and high ping rates.
A special mode is the ability to define the desired equidistant spacing between beams on the
seafloor and keep it constant. The system will "hold" this automatically, as depth varies, within the
constraints defined by the minimum and maximum number of beams.
Selectable beam density adds to the flexibility of the system with several benefits:
 Optimized data volumes tailored to survey purpose/specifications
 Save of up to 75% of data volume in very shallow water
 Faster processing
 Reduced time and costs from survey to deliverable

7.2.1 Beam Modes

Beam mode selection is made on the fly via the sonar user interface. For instructions, refer to the
RESON Sonar UI User Manual (see Appendix E Reference Documentation). Available selections
depend on options purchased (see also Table 1).
Equi-distant
(with constant no. of beams)
Equi-distant
(with constant beam spacing)
Intermediate
Equi-angle
FlexMode 16
For examples on how to use this feature, see section 6.2.9 Use of Beam Modes.
16 FlexMode is an optional add-on feature (see Table 1).
SeaBat T-Series Subsea Operator's Manual
Version 7

Table 6: Beam Modes with No. of Beams and Swath Coverage

T20/50
Min.
10
10
10
10
512
Page 57
No. of beams
T20 T50
Std. Max. Std.
512 512
512 512
512 512
512 512
512 512
Swath
T20/50
Max. Max. swath
140/150
140/150
140/150
165
140/150
January 31, 2019