Iridium

[jvoermans]

Do you think it is feasible to send some general statistics from the sensors through Iridium, including the geophone?

[jerabaul29]

Yes, I think it is. The only problem I see is that, to send these statistics, we should first know what kind of statistics we want to send, and for this, I think we would need to sample some representative raw data by deploying a few instruments and recovering them to get access to the raw SD cards data for a posteriori analysis. We can always bake some sorts of a priori statistics analysis and send them over iridium, but before we have seen the raw signal I think that there is no real way to know exactly what to look for. What do you think? The iridium module itself is very easy to incorporate, it is basically just a device that receives current and that we can talk to using the serial port, so if you know which statistics you want to look at, these could be arranged.

[jvoermans]

I agree. I was thinking about some general statistics, like std or maximum or values or percentage at maximum value. That will give information on the magnitude of the recorded signal.

Problem is, we don't know what is recorded until the boxes are retrieved. In Antarctica and the Arctic that is tricky, as we will rely on time schedule and weather conditions. Imagine (knock on wood) that all instrument get lost, then we still don't know anything about it.

I'm aiming for a site at Antarctica that is closer to the station, in the hope that makes it easier for them to check the box, remove data etc., but there is no guarantee of course... Additionally, usually ice closer to the station is not ideal for our experiments...

[jerabaul29]

Ok. Yes we could add a few statistics.

[jerabaul29]

The statistics are added but we will add the iridium only on the next iteration when we know if there is value in these and / or if we should compute other stats from your other answer, so closing.