Data Management
When GOBI is powered indoors, GRYFN recommends pointing a small fan at the main exhaust vents to help keep thermals in check. GOBI maintains good temperatures in flight with sufficient airflow across the chassis, but can become quite hot when sitting powered in stagnant air for extended periods of time.
Data Storage
A 500GB internal mSata Solid State Drive (SSD) is installed in the chassis. This internal device collects and stores VNIR Hyperspectral, LiDAR, and GNSS data. A 256GB SD Card is installed in the optional RGB frame camera for storing RGB images.
Offloading Data
Via GRYFN Processing Tool
1
Connect to chassis via Ethernet or WiFi
2
Open GRYFN Processing Tool
3
Open the Bundle Data tab
4
Under Download from Sensor click Query Sensor
5
After a few seconds your GOBI chassis will appear, click on it
6
Click Create GRAW
7
All available missions will appear
8
Select the mission you wish to download
9
Choose a save path
Via FTP Service
First, connect to the GRYFN GOBI chassis via Ethernet. Then, in your FTP application of choice (WinSCP, Filezilla, etc.), to access LiDAR data, VNIR Hyperspectral data, and system logs, use the following session settings:
File Protocol
FTP
Host Name
10.0.65.50
Port Number
21
User Name
gryfn
Password
gryfn
Files can be found in the following directories:
GNSS
/data/{mission_name}/gnss
LiDAR
/data/{mission_name}
VNIR
/data/capturedData/captured/{dateTime}
System Log
/data/gryfn.log.{date}
Frame Camera
Images are stored to the camera's SD Card
Data Confirmation
After the flight, or after data has been downloaded to your local device, check file counts and sizes against the nominal collection rates in the table below to ensure data has been captured properly.
GNSS-INS
1 file
~1.5MB per minute
A new file will be created if time rolls over the hour (clock time, not capture time).
LiDAR
1 per minute
~175MB per file
First & last file may be smaller May be smaller if over low reflection object.
VNIR
Mission time (s) ÷ Frame Period value ≈ number of data cubes
VNIR data should capture several GB of data for even short flights
Check that frameindex, imu_gps, settings files all exist.
RGB
Image every 2s
~30 - 70MB per image
Check event log vs number of images
Clearing Storage
GNSS-INS, LiDAR, and VNIR
1
Connect to chassis via Ethernet or WiFi
2
Navigate to GOBI WebUI
3
Clear Mission
4
Alternatively, delete missions/files individually via FTP software
Clear Mission button will delete GNSS data, LiDAR data, and VNIR data. RGB data must be deleted from the SD card separately. Only remove data inside the DCIM folder.
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