136 User’s Manual INNOMAR Parametric Sub-Bottom Profilers / SESWIN
136 Innomar Technologie GmbH (2023-01)
10.2.2 SEG-Y Processing Settings
General Processing
Data written to the SEG-Y file will be heave-compensated by default using the heave data stored
within the INNOMAR data file. If for any reason the heave values are assumed to be faulty, heave
correction can be omitted. If required, there is also a possibility to decrease the number of
samples per trace, to reduce the size of the output file.
Range Processing
There are three options within the “Range Processing”:
The first option is to apply a depth correction if Z-values such as RTK-Z, ROV altitude or
tide values are available.
Range correction is applied by default since some SEG-Y processing software does not
support changing trace start offsets.
The extend depth data range option fills data by zeros to have the same start for all traces
within different data files.
Coordinate Processing
Some seismic software requires unique position data for each ping. Therefore, we recommend
interpolating the position data (if not already done using the ISE software). Anyhow you should
activate to remove coordinate duplicates here.
Trace Numbers
Some seismic software needs unique trace numbers within the entire project (over all data files
acquired). Within INNOMAR data files trace numbers start with each profile. There are options to
generate unique trace numbers based on ping date and time or to count traces over all INNOMAR
data files converted.
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