Very interesting topic. So, it appears that UrsaNav bought a pair of companies that have interesting IP. In particular, CrossRate has a few interesting patents -- this may be the most relevant:
United States Patent Application 20080144744: A system for demodulation of the Loran Data Channel transmitted over the Enhanced Loran (eLoran) system including a quadrature filter. The quadrature filter calculates the real and quadrature phase components of a received ninth pulse. The resultant components are used to obtain the angle of the ninth pulse. This angle is then compared with a set of pre-tabulated angles/symbols that are calculated using the same quadrature filter on thirty-two different simulated ninth pulses. The closest angle match gives the corresponding symbol. Such twenty-four symbols make up a single Reed Solomon encoded message. This message is then passed through a Reed Solomon decoder and the transmitted message is obtained. Also, UrsaNav teamed with Nautel, noted LF amplifier designer for this system. Interesting. On Sat, Dec 1, 2012 at 10:42 AM, Chuck Harris <[email protected]> wrote: > Remove the "that" from "pdfthat" ? > > > paul swed wrote: > >> Not sure why the link does not work but the docs under the whitepapers. >> >> On Fri, Nov 30, 2012 at 9:17 PM, Alan Hochhalter <[email protected]> >> wrote: >> >> There is some info here http://www.ursanav.com/ - click on the Latest LF >>> News on the right side. >>> >>> There is a paper here >>> >>> http://www.nautelnav.com/wp-**content/uploads/2011/09/** >>> Nautel-UrsaNav-NAV10-Research-**Paper.pdfthat<http://www.nautelnav.com/wp-content/uploads/2011/09/Nautel-UrsaNav-NAV10-Research-Paper.pdfthat> >>> I think is relevant. It will take me some time to wade through it >>> with no guarantee I'll understand it enough to be sure it is talking >>> about >>> the same thing so I thought I'd pass it along. >>> >>> Alan >>> >>> On Fri, Nov 30, 2012 at 6:46 PM, paul swed <[email protected]> wrote: >>> >>> Well as predicted they went home at 5pm. Signals off the air. >>>> >>>> On Fri, Nov 30, 2012 at 7:26 PM, Bill Riches <[email protected] >>>> >>>>> wrote: >>>>> >>>> >>>> Nothing going on in Cape May for a while - I don't know if they are >>>>> >>>> done >>> >>>> testing. >>>>> >>>>> Bill WA2DVU >>>>> Cape May, NJ >>>>> >>>>> -----Original Message----- >>>>> From: [email protected] >>>>> [mailto:time-nuts-bounces@**febo.com<[email protected]> >>>>> ] >>>>> >>>> On >>> >>>> Behalf Of Mike Garvey >>>>> Sent: Friday, November 30, 2012 3:25 PM >>>>> To: 'Discussion of precise time and frequency measurement' >>>>> Subject: Re: [time-nuts] Loran >>>>> >>>>> >>>>> Might be these guys; this abstract is from the Precision Time and Time >>>>> Interval (PTTI) Meeting which took place in Reston, VA during this past >>>>> week. >>>>> >>>>> There will be a follow-up manuscript. >>>>> >>>>> Mike >>>>> >>>>> -----Original Message----- >>>>> From: [email protected] >>>>> [mailto:time-nuts-bounces@**febo.com<[email protected]> >>>>> ] >>>>> >>>> On >>> >>>> Behalf Of paul swed >>>>> Sent: Thursday, November 29, 2012 6:35 PM >>>>> To: Discussion of precise time and frequency measurement >>>>> Subject: Re: [time-nuts] Loran >>>>> >>>>> Rich >>>>> Did not see anyone respond. Are you still hearing the signal? >>>>> Paul >>>>> WB8TSL >>>>> >>>>> On Mon, Nov 26, 2012 at 6:59 PM, Rich and Marcia Putz <[email protected] >>>>> >>>>>> wrote: >>>>>> >>>>> >>>>> Hi all; >>>>>> >>>>>> I 'm hearing Loran C signals here in northern Indiana this evening, I >>>>>> guessing from New Jersey. Anyone else hearing these? >>>>>> >>>>>> Rich >>>>>> >>>>>> ______________________________****_________________ >>>>>> time-nuts mailing list -- [email protected] To unsubscribe, go to >>>>>> https://www.febo.com/cgi-bin/**** <https://www.febo.com/cgi-bin/**> >>>>>> mailman/listinfo/time-nuts< >>>>>> >>>>> https://www.febo.com/cgi-bin/**mailman/listin<https://www.febo.com/cgi-bin/mailman/listin> >>> >>>> fo/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<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<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<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<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<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<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.
