GPR data logs (
-gpr.sgy
suffix) contain radar trace data in SEG-Y format. These files can be
analyzed in PC applications such as Prism2 or similar software capable to read and process
GPR data in SEG-Y format.
Echosounder data logs in SEG-Y format (
-echo.sgy
suffix) contain sounding trace data.
These file can also be analyzed in the SEG-Y data processing software.
Echosounder data logs in NMEA 0183 format (
-nmea.txt
suffix) contain bathymetric data.
These files can be processed in any software capable of handling data in NMEA 0183 format
(e.g. ReefMaster).
Gas detector data logs in mixed NMEA 0183 + raw messages format (
-pergam.txt
suffix)
contain measured concentration data. These files can be processed in Pergam’s proprietary
software.
The filename contains the sequential numbers (000001, 000002, etc.) before the time
synchronization and date/time (in YEAR-MONTH-DAY-HOUR-MIN-SEC format) after the
synchronization with the GPS. The time is UTC.
Logging (except system log) is started only by command from UgCS-CPM (using the
Record/Stop button) or automatically after taking off. The system log begins after onboard
software is started.
The logs with the same file names have been created simultaneously. When the filename is to
be changed (e.g. after the time synchronization) a new set of logs is created.
The logs can be automatically divided by file size, time, trace count (GPR or echosounder
only), and waypoints. This option is turned off by default. To enable it, set corresponding
parameters to values greater than zero in the
[APP]
section. More than one parameter can be
set simultaneously, in this case splitting will be fulfilled when the first of selected conditions
occurs:
[APP]
LOG_SPLIT_SIZE_MB=0 ; megabytes
LOG_SPLIT_TIME_S=0 ; seconds
LOG_SPLIT_TRACES=0
LOG_SPLIT_WAYPOINTS=0 ; 0 or 1
When
LOG_SPLIT_WAYPOINTS
is set to 1 or another value greater than zero, each log file will
contain one flight line with two waypoints.
There are two ways to download log files:
• Using UgCS-CPM (see
)
• With any web browser via HTTP protocol
When the second way is chosen, open
(Wi-Fi) or
(Ethernet)
in your browser and choose the required log file from a list of all recorded ones.
About Log Files
UgCS SkyHub User Manual
Copyright © 2019—2021, SPH Engineering
85
Revision 5 • November 2021
