[time-nuts] RINEX for Android

[Scott Newell]

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