User’s Manual INNOMAR Parametric Sub-Bottom Profilers / SESWIN 211
Innomar Technologie GmbH (2023-01) 211
A.17 Innomar SBP Data Acquisition and File Formats
Innomar Data Acquisition
Most INNOMAR SBPs digitise the received signal of the LF channel at a sample rate of 96 kHz.
The received HF signal is shifted into the LF band and data is then sampled similar to the LF
data. For best signal-to-noise ratio all data is band-pass filtered. Filter settings are automatically
chosen by the system to match the transmit pulse settings currently used.
Innomar Data Formats
There are three data formats used with the INNOMAR sub-bottom profilers:
SES: envelope (magnitude) data (16 bit) at reduced sample rate (i.e. sample rate
depends on range settings), number of samples is fixed to 480 samples per trace.
Note: This format is obsolete and not supported since SESWIN version 2.2.3.8.
RAW: full-waveform data (16 bit) at full ADC sample rate, number of samples per trace
depends on range settings.
SES3: full-waveform data (24 bit) at full ADC sample rate, number of samples per trace
depends on range settings, multi-channel capability.
The SES3 file format supports multi-channel systems such as the INNOMAR “quattro” model and
stores 24-bit data for enhanced processing as required by an increasing number of customers.
Today, this data format is supported by “quattro” and new “medium-xx” and “deep-xx” models
only, but will become available for the other models in future, too.
All Innomar data files can be converted to SEGY data for using third-party post-processing
software packages. Conversion done with our SESConvert tool, see below for details.
The following table shows a summary of the available file formats and sampling details for all
INNOMAR SBP models.
Innomar SBP model Recorded sample rate and
resolution
Available File Formats
compact (before 2011) max. 70 kHz (depends on range
setting), 16-bit
SES
compact (since 2011 with option RAW) 70 kHz, 16-bit SES, RAW (option)
compact (since 2016) 70 kHz, 16-bit (SES), RAW
light, light plus 96 kHz, 16-bit (SES), RAW
standard, standard plus 96 kHz, 16-bit / 24 bit (SES), RAW, SES3
quattro, sixpack 96 kHz, 16-bit / 24-bit SES3
medium-100, medium-70 96 kHz, 16-bit / 24-bit SES3
deep-36, deep-15 96 kHz, 16-bit / 24-bit SES3
ROV, AUV 70 kHz, 16-bit (SES), RAW
!
The SES format should not be used for new projects because of the limited resolution,
especially at longer ranges. Use the RAW or the SES3 format instead.
The SES file format is obsolete and not supported since SESWIN 2.2.3.8.
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