SYSTEM PERFORMANCE AND DATA TYPES
SeaBat 7125 SV2 Operator‟s Manual
Page 118
July 25, 2011
Version 3
7.1.4 Flex Mode
30%
Total swath
High density
sector
Low density
sector
Low density
sector
Default settings
Total swath: 90
°
High density sector: 45
°
centered
Altitude: 5m
DTM density: 0.1m
Figure 50: Graphic Illustration of Flex Mode
Flex mode provides a combination of a high density of beams on and around the object
location and a reduced density of soundings for the rest of the swath. The low density
spacing is defined by the operator and the high density spacing is computed by
optimization based on survey parameters.
For instructions on how to adjust this setting, see
section 5.7.1.3 Set the Beam Mode
7.2 Data Types
7.2.1 Bathymetry Data
At 400kHz, the SeaBat 7125 generates 240 or 512 soundings per ping. At 200kHz, the
system generates 140, 320, or 512 soundings per ping.
The system broadcasts from the transceiver to the data acquisition software, where they
are corrected for mechanical offsets, motion, heading, refraction, tide or depth, and
position. To perform these corrections, the appropriate sensors must be interfaced to the
data acquisition software (see
section 4.5 I/O Module Configuration
).
Depending on the beam angle, bottom type, and signal characteristics, the bottom
detection method employed may be magnitude center-of-energy, phase slope zero-
Summary of Contents for SeaBat 7125 SV2
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