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Fledermaus 7.7.7 Release

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26 July 2017, We're pleased to present Fledermaus 7.7.7

Users, please be aware that there is an issue with the QPS blue dongles for users running the application in Mac OS 10.11 or higher or Linux. This is known issue with the dongle manufacturer and continue to work to find a solution.

Please refer to the information related to the  Fledermaus Platform Overview to make sure you can run our applications.

Mac OS users please note that we are having a known issue with the help documentation launching directly from the application. Rest assured that the help reference manual is getting installed as part of the application and you can get to it through the finder application.

Users working with PFM and CUBE are recommended to upgrade to 7.7.7

Users working with FMGT via Qimera - GSF export, are strongly recommended to upgrade to Fledermaus 7.7.7 and Qimera 1.5.4.

Fixes and Improvements


    • Fixed issue of previewing points file with Omniviewer when importing them in Fledermaus


    • Fixed bug from PFM handling with large files when working with a CUBE surface
    • Crashing issue when handling specific .las files is now fixed
    • Improved re-cubing process to get proper handling
    • PFM building was not properly handling depth ranges when auto scanning the loaded data, causing soundings that are at the minimum or maximum range to be excluded 
    • Improvement for assigning sub-record values for .FAU files that has data with decreasing angles


    • FMGT now extracts the multibeam, motion and position sensor offsets from the GSF file if they are present.  
    • Improved R2Sonics 2024 data handling for DB/QPD files pairings
    • Improved memory allocation testing requirements in graphical user interface for mosaic creation by pixel and mosaic size and processing unit memory available
    • There is now support for XTF Reson 7028 packets for XTF/GSF and XTF/HDCS source files pairings.
    • There is now support for T20R and T50R (model 22 and 52) when working with DB/QPD as source files pairs.
    • There is now support for R2Sonics Ultra High Density bathy data pairing with the snippet records.

Technical Note

Users working with FMGT via Qimera - GSF export, are strongly recommended to upgrade to Fledermaus 7.7.7 and Qimera 1.5.4.The multibeam sonar offsets are used to compute the sounding positions relative to the sonar head (as opposed to the vessel reference point, as was done previously).  This affects the beam angle calculation and will give improvements to the beam angle calculation between the sonar head and the sounding location.  The beam angle is used for pulse length corrections and is also used to tabulate backscatter by beam angle when computing ARA results.  For users who process their bathymetric data in Qimera, you are urged to upgrade Qimera to version 1.5.4, which is coincidentally timed with the Fledermaus 7.7.7 release for this very reason.  Qimera has always exported the vessel setup in GSF files, but previous versions reported soundings relative to the sonar.  Version 1.5.4 now produces GSF files in which the soundings are reported to the vessel reference point, as per the GSF convention.  For FMGT users that create GSFs within FMGT, this change has no effect since FMGT largely does not always have access to vessel configuration information in the variety of formats that it pairs to create GSFs.  The GSFs that FMGT creates will not contain vessel offsets and will thus not be affected by this change.