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semuconsulting / pyubx2

Python library for parsing and generating UBX GPS/GNSS protocol messages.
BSD 3-Clause "New" or "Revised" License
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rinex output #87

Closed paapu88 closed 2 years ago

paapu88 commented 2 years ago

Dear Developers, Is there or is there a plan to make a u-bloc to rinex (Receiver Independent Exchange Format) converter? Terveisin, Markus

semuadmin commented 2 years ago

Hi @paapu88

You're not the first person to ask, but this would involve a great deal of work and there are no current plans to support such a converter in pyubx2 unless a significant new contributor pops up.

For the time being, the RTKCONV utility within RTKLIB is probably your best option, but this is obviously not a Python utility.

paapu88 commented 2 years ago

Thanks, I'll let you know if I'm your new contributor, have to discuss with my boss. But probably not if you think it is lots of work...

semuadmin commented 2 years ago

Hi @paapu88

FYI the main issue is that the complete RINEX specification includes a great deal of data which is not covered by the UBX protocol, so it would not be a simple conversion from, say, a UBX message payload to its RINEX equivalent.

You could convert individual UBX message attributes via lookup tables where there's direct correspondence, but I imagine that in itself would be of limited value.

In addition, NAV data (ephemera, almanac, etc.) requires time-series aggregation of multiple UBX messages (e.g. RXM-RAW & RXM-SFRBX) over an extended period, whereas pyubx2 was designed from the outset to be a 'single-pass' parser i.e. one GNSS payload in, one UBX message out.

It really depends what specific functionality you'd be looking for in a RINEX 'converter'.

paapu88 commented 2 years ago

Thanks! That was a valuable piece of information for a novice.