int/20110714_084014l_20110714_084014u.snr
int/20110714_084014l_20110714_084014u.off
int/20110714_084014l_20110714_084014u.coffs - - 1 0
SLC_interp slc/20110714/20110714_084014u.slc $slc1.par \
slc/20110714/20110714_084014u.slc.par \
int/20110714_084014l_20110714_084014u.off \
rslc/20110714/20110714_084014u.slc.rslc \
rslc/20110714/20110714_084014u.slc.rslc.par \
now that the interferogram is created using the master slc and the rslc as in Step 14 above.
16. Backup data. e.g. with secure copy or rsync to a network attached disk. Use ionice to avoid disk
timeouts while acquiring data:
ionice -c2 n7 scp -r Rosenlaui 192.168.1.1:backupdirectory/
ionice -c2 n7 rsync -av Rosenlaui 192.168.1.1:backupdirectory/
or plug an external usb disk and mount it. To find out the device id of the disk (most likely
/dev/sdb1)
dmesg | tail -n 50
and look out for lines such as
[1295858.275037] sd 16:0:0:0: [sdb] Assuming drive cache:
[1295858.275046] sdb: sdb1
or sometimes its just
[1295858.275046] sdb:
Mount the device on /mnt for user gpri2 with
sudo mount -o gid=1000,uid=1000 /dev/sdb1 /mnt
The data can now be copied to and from /mnt.
i
onice -c2 -n7 cp -av Rosenlaui /mnt
Make sure you unmount the device at the end
sudo umount /mnt
17.
Always do a positioner home-run before you switch off the instrument:
home_run.py
18.
and shut down the Instrument Controller properly
sudo shutdown -P now
and switch off the power at the yellow Pelican box.
3.2.2 Operating the instrument through HTTPS
The Instrument Controller provides a web based user interface. It can be accessed through secure http
(https) and needs authentication. Detailed description is given in Section 5.2 . Here we describe the
minimal steps to run a measurement and check data quality.
1. Access instrument by browsing to the IP address of the instrument (Figure 12). Ignore the
certificate complaint and provide username and password.
2. Check the entries in the Accordion Panel on the right (temperatures and GPS status) and finally
do a homerun of the motor (Figure 13) to initialize the Home Position of the motor.
3. Determine the start and stop angles for the scan by moving the antenna around using the Motor
Menu in the Accordion Panel on the right. Be aware that about additional 3 degrees are needed
on both sides for the motor to accelerate and decelerate.
4. In the Measurement Control Tab, start the measurement setup (Figure 14). The measurement
