At 05:46 AM 4/12/2018, jimlux wrote:
It turns out that some of the newer Android phones support an API
which returns raw GNSS data and that can be logged to a file in
RINEX format. There's a few apps out there that do this although
I've not tried it (my Samsung S6 doesn't have the right hardware).
I've not had good luck with the Google GNSSLogger app on a Nexus 5X
(which is a supported device). Lots of crashes, very little logged
data. I think the Nexus 9 tablet was the optimal device--something
about leaving the GPS chipset powered up, so carrier phase data
didn't have lots of cycle slips?
I ran across this when looking for software to generate RINEX files
from data from NEO-7 GPS modules (which I'm still looking for)
Won't rtklib do it? (I recently received a china special NEO-7N
module from ebay, but I've yet to run the raw data through rtklib.
It's on my todo list. The unit seems to support the undocumented raw
output formats and logging to flash, so I'm pretty sure it's a real
ublox device.)
--
newell N5TNL
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