Teledyne SeaBat T Series, Operator'S Manual, Page: 47 / 152

ACTIVE SONAR USAGE
SeaBat T-Series Subsea Operator's Manual Page 35 January 31, 2019
Version 7
6.2.8.1 Coverage Angle
The benefits of the variable swath feature are twofold:

Increased sounding density in a small sector may be used when tracking pipes or other
linear features, where the operator is not interested in data outside a defined sector.
The increased sounding density helps define small targets.

A reduced swath width allows an increase in ping rate for any given depth.
6.2.8.2 Beam Reduction

With beam reduction enabled, only the beams necessary to fill the given swath are formed.

With beam reduction disabled, all beams are compressed into the selected coverage angle.
Seafloor at 35m depth
64°
Operating on 100m range scale
Ping rate 5Hz
Seafloor at 35m depth
22.5°
Operating on 50m range scale
Ping rate 10Hz
100
m
50
m
35
m
35
m
Figure 6: Example of Reduced Swath Width