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Recording Format
Click
Recording Format
to choose between recording raw sonar data (to a “.mmb” file) or
recording beamformed sonar data (to a “.imb” file).
.mmb
.mmb is the default recommended recording format.
This is raw element data, not beamformed, in a 16-bit fixed-point complex format. This
format allows great flexibility in how the data is processed and allows you to do your own
beamforming or profile-point extraction. The data body size is determined by the number of
elements and the number of samples.
If you want to keep your recordings in .mmb format but process your data in .imb format,
you can convert .mmb files to .imb files using a batch conversion utility.
.imb
This format consists of beamformed data.
You can choose between a 32-bit floating point complex or 8-bit integer magnitude format.
Select the 8-bit format only if you are interested in imaging pixel data and want a reduced
data file size. The 8-bit format takes up a quarter of the 32-bit format's size.
Data body size is determined by the number of beams and samples. Different modes may
form a different number of beams. Therefore, data body size may change depending upon
the mode.
.imb files are easier to work with when using the M3 Sonar FLS MATLAB toolbox and can
be used with third-party software, such as Echoview.
Note
If files are recorded in .imb format, they cannot be converted to .mmb.
Related topics
Recording sonar data, page 45
Converting your recording format, page 47
Convert to Video Format dialog box
The
Convert to Video Format
dialog box allows you to convert an MMB or IMB file to
a video file (MP4 format only).
How to open
This dialog box is opened from the
File
menu.
Summary of Contents for M3 Sonar
Page 1: ...Reference Manual M3 Sonar FLS Forward Looking Multibeam sonar ...
Page 2: ......
Page 182: ... 2022 Kongsberg Mesotech ...
