The images are stored on the two Raspberry Pi Zeros. The Image download station provides image download via two parallel Wifi links from the drone. The image download station is based on two GL-AR750 access points. The datatransfer itself is handled by rsync via its rsync protocoll which doesnt rely on SSH. SSH is not used as the pi zero is not fast enough to encrypt the huge data we want to transfer for each flight.

Configure datastorage with rsync in /etc/rsyncd.conf on ship laptop

[camimages]
path=/home/USER/camimages
hosts allow = *
list = true
uid = root
gid = root
read only = false

start rsync daemon on ship laptop

sudo systemctl start rsync

run datatransfer task on each pi ( later triggered via script @ groundcontrol pc)

rsync -avvz -u --progress -h /data/bilder/ rsync://GROUNDSTATIONIP/camimages