I know the Swift Nav guys and they are working on adding various forms of customizable timing inputs and outputs to the Piksi. It's also an open-source project, so it's pretty flexible in that regard.
Henry On Sat, Jan 25, 2014 at 4:56 AM, Magnus Danielson <[email protected]> wrote: > On 25/01/14 11:42, Anders Wallin wrote: >> >> AFAIK 'normal' RTK does not provide a clock solution. There's something >> called 4D RTK which does: >> http://saegnss1.curtin.edu.au/Publications/2010/Feng2010Four.pdf >> apparently the results can be very good - but I think the errors quoted >> are >> for time-transfer between two RTK receivers (?). >> >> If there are papers comparing time-transfer with dual-frequency PPP to >> this >> 4D RTK I'd be interested.. > > > I think you need to differentiate between common-view time-transfer and the > precision you get from the system itself. > > RTK uses the carrier phase corrections achieved from known position to kind > of high-speed delta signals as received in it's neighbourhood. This affects > both the position and time shifts of the receiver. If the RTK base also has > a good timebase and is maintained in a good way time-wise, then both > position and time gets good corrections. > > It's about the same type of errors as you get in the difference between > common-view time-transfer comparisons. > > If you only do L1 C/A RTK, then naturally you will benefit from the RTK as > you have no double frequency observations of your own. If you have > double-frequency receiver, RTK assist to work on the tropospheric > corrections and sat orbit and time errors for which a pure double frequency > receiver isn't able to crack on it's own. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
