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SYSTEM PERFORMANCE AND DATA TYPES
SeaBat T-Series Subsea Operator's Manual
Page 62
January 31, 2019
Version 7
7.4
Multi-Detect
17
Multi-detect is a feature which provides multiple detections
within each beam, including the full water column. It allows
the surveyor to capture enhanced detail from a single
survey line over a complex feature, or ensure that full detail
is captured of any object in the water column, even in noisy
environments. Up to five detections may occur anywhere
within each beam. (See also
section 6.3.1 Multi-Detect
.)
NOTE
Multi-detect is not equivalent to multiple soundings
across a beam footprint on the seabed.
With the multi-detect feature you achieve:
Enhanced detail over complex, small, and fine
objects.
Improved and faster decision making.
Easier and faster water column processing.
More project opportunities.
In the scenario in
without multi-detect the sonar
would detect either the anchor chain (blue dots) or the
seabed (red dots) or flicker between the two features.
With multi-detect, the sonar can detect both the anchor
chain and the seabed.
Figure 34: Standard Detection
Figure 35: Multi-Detect with Enhanced
Detail on Quay Wall
Figure 36: Multi-Detect
7.5
X-Range
18
Performance
X-Range is a feature that provides extended range performance at the full range of frequencies
and also significantly improves system immunity towards external noise. The basis of the X-
Range feature is a frequency-modulated (FM) transmission combined with advanced signal
processing techniques to extract the maximum possible performance from the system.
7.6
Full Rate Dual Head
19
The Full Rate Dual Head (FRDH) feature is superior to the standard dual head implementation by
providing simultaneous pinging, whereas the standard dual head feature operates with alternate
pings (see
17
Multi-detect is an optional add-on feature (see
).
18
X-Range is an optional add-on feature (see
19
FRDH is available as an upgrade to the Base license set (see
).
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