HI > On Dec 16, 2014, at 8:14 PM, Gregory Maxwell <gmaxw...@gmail.com> wrote: > > On Wed, Dec 17, 2014 at 12:01 AM, Jim Lux <jim...@earthlink.net> wrote: >> On 12/16/14, 3:36 PM, Magnus Danielson wrote: >> what about one of the software receivers? I would think that making L2 and >> L5 filters isn't that tough, so all you need is the back end. > > I'm pretty sure GNSS-SDRLIB supports L2C, you can see it working with > a ~$400 bladerf > > http://www.rtl-sdr.com/real-time-gps-positioning-bladerf/ > > Though getting dual band, in phase, requires something like a $1100 > USRP B210... and that that point you're getting in to the price-points > where you can find surplus survey receivers and such. > > From a timenuts perspective, it may be more interesting to go the SDR > route, since the survey receiver is not likely to have a lot of > affordances for timing applications and there is a lot of interesting > things you could do in software.
That qualifier is indeed something I should have stated earlier. My assumption is that a high quality timing receiver is the target. The whole fixed location / single sat solution / per sat solution stuff is what I’m thinking about. No I didn’t mention that earlier … I should have. Bob > > There have been some people talking about GNSS targeted SDRs, e.g. > things with 4x in phase down mixers and backing ADCs that could > simultaneously capture every current/known GNSS signal and send them > down to the computer, at a reasonably low price... but I think none > have moved past the prototyping phase. > > The nearest I'm aware that seems actually available is > http://www.onetalent-gnss.com/ideas/software-defined-radio/sdrnav40 > but I don't really know anything about it. (e.g. if it's real, what > the software support story is, etc.) > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.