Multi-Detect; X-Range Performance; Full Rate Dual Head; Figure 34: Standard Detection - Teledyne SeaBat T Series Operator's Manual

SYSTEM PERFORMANCE AND DATA TYPES
7.4

Multi-Detect

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
Operation.)
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 Figure 36, 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.
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

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 Figure 37).
17 Multi-detect is an optional add-on feature (see Table 1).
18 X-Range is an optional add-on feature (see Table 1).
19 FRDH is available as an upgrade to the Base license set (see Table 1).
SeaBat T-Series Subsea Operator's Manual
Version 7
17
NOTE
19
Figure 35: Multi-Detect with Enhanced
Page 62

Figure 34: Standard Detection

Detail on Quay Wall

Figure 36: Multi-Detect

January 31, 2019