One of my favorite alternate GPS applications is using the visibility of the satellites like tomographic beams to reconstruct the 3D geometry of buildings
http://www.kihwan23.com/papers/ISWC08/GPSRAY_ISWC08_short_final.pdf Andy Bardagjy bardagjy.com On Aug 14, 2014, at 5:18 AM, Collins, Graham <[email protected]> wrote: > > This is an interesting use of GPS, I had never considered the Aurora or solar > storm angle before. > > However, I am aware of the use of ionospheric scintillation and TEC > measurements for ionospheric research and also for the study and detection of > earthquakes. > > Canadian High Arctic Ionospheric Network (CHAIN) uses this technology > > http://chain.physics.unb.ca/chain/pages/gps/ > > and a couple of links about the earthquake angel: > > http://demeter.cnrs-orleans.fr/dmt/doc/workshop2011/10_Vishal_Chauhan.pdf > > http://demeter.cnrs-orleans.fr/dmt/doc/workshop2011/12_O.P.%20Singh_Agra.pdf > > I have been pondering how I could use as is or modify one of my GPS receivers > to make these sorts of measurements. The CHAIN gps receivers use a OCXO but > haven't figured out how to apply that to one of the GPS receivers I currently > have or even if I could. > > I have also been pondering whether I could approach from a different angle by > using the range correction values provided Differential GPS (DGPS) radio > beacons which broadcast range correction values for use with DGPS capable > receivers. Seems to me that the Ionospheric effects on the GPS signal is > reflected in the range correction values and it should be a matter of working > backwards. > > Cheers, Graham ve3gtc > > > -----Original Message----- > From: [email protected] [mailto:[email protected]] On > Behalf Of Hal Murray > Sent: August-14-14 4:32 AM > To: [email protected] > Cc: Hal Murray > Subject: [time-nuts] One man's noise is another man's signal... > > Tue evening, I went to a talk on Auroras and Solar Storms. It was targeted > as the general public so they didn't get into any technical details. > > One of the pictures showed a GPS setup. They were using it to measure free > electrons in the ionosphere. > > > A friend found this in case anybody wants gory details: > http://www.navipedia.net/index.php/Ionospheric_Delay > > > -- > These are my opinions. I hate spam. > > > > _______________________________________________ > 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. > > This electronic message, as well as any transmitted files included in the > electronic message, may contain privileged or confidential information and is > intended solely for the use of the individual(s) or entity to which it is > addressed. If you have received this electronic message in error please > notify the sender immediately and delete the electronic message. Any > unauthorized copying, disclosure or distribution of the electronic message is > strictly forbidden. NAV CANADA accepts no liability for any damage caused by > any virus and/or other malicious code transmitted by this electronic > communication. > > Le présent message électronique et tout fichier qui peut y être joint peuvent > contenir des renseignements privilégiés ou confidentiels destinés à l’usage > exclusif des personnes ou des organismes à qui ils s’adressent. Si vous avez > reçu ce message électronique par erreur, veuillez en informer l’expéditeur > immédiatement et supprimez le. Toute reproduction, divulgation ou > distribution du présent message électronique est strictement interdite. NAV > CANADA n’assume aucune responsabilité en cas de dommage causé par tout virus > ou autre programme malveillant transmis par ce message électronique. > _______________________________________________ > 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.
