Content-Length: 3471 | pFad | http://acc.igs.org/./iono/iono-sw.txt

Subject: [IGS-ACS-316] test s/w for higher-order iono corrections (fwd) From: "Jim.Ray" Date: Thu, 04 Mar 2010 09:21:34 -0500 To: igs-acs@igscb.jpl.nasa.gov CC: Manuel Hernandez Pajares , Manuel Hernandez Pajares , Haroldo Marques , p.defraigne@oma.be, Miguel Juan-Zornoza , Jaume Sanz , Elizabeth Petrie , Andrzej Krankowski , Steve.Hilla@noaa.gov, galera@fct.unesp.br, Marcio Aquino , Lutz Simon , rorus@ma4.upc.edu, Manuel Hernandez-Pajares , gpetit@bipm.org ****************************************************************************** IGS-ACS Mail 04 Mar 06:22:00 PST 2010 Message Number 316 ****************************************************************************** Dear ACs, Please see the information below from Manuel Hernandez Pajares about a new *test* s/w package to compute the 2nd order iono correction. This follows the development described in the updated Chapter 9 of the IERS Conventions. I urge all ACs to test and evaluate this package and please report any problems or apparent bugs. For the time being, I recommend *against* actual operational adoption until it is clear that there are no outstanding issues. It would be best to try to coordinate the IGS adoption of such a model later this year in order to quantify its effects on IGS products. I would very much like to thank Manuel and the ad hoc group (cc list) that he assembled to put together and test this package. It has been a remarkably successful demonstration of collaboration and cooperation! With regards and thanks, --Jim -------- Original Message -------- Subject: Re: Higher-oder iono corrections: New software update Date: Thu, 04 Mar 2010 09:09:03 +0100 (CET) From: Manuel Hernandez Pajares To: Jim.Ray CC: Manuel Hernandez-Pajares Hi Jim, I have not received new inputs so please go ahead with the last I2 subroutine release for AC testing: http://gage14.upc.es/MANUEL/.I2/i2_soft_update_v1d.20100218.tgz Just a few general remarks: - It is a completely new software done from scratch, evolved with the contributions of an informal working group of voluntaring people, so it still can contain bugs. - Only the second order ionospheric correction is incorporated by the time being. It is the more important, and there is a clear consensus of how to apply it (additional higher ionospheric order terms and effects could be incorporated in future after more discussion). - The programming has been done priorizing the general applicability among the numerical/memory efficiency. In spite I will be very committed in several points before the next IGS meeting (exams for a new position, local organization of an Intl. meeting, new project and extra teaching) I will do my best to try provide some feedback if needed. Thank you again for your encouragement and continued support to IGS ionospheric activities, Manuel ======================================= Dr. Manuel Hernandez-Pajares, gAGE/UPC manuel@mat.upc.es http://www.gage.es Mod. C3, Desp. 209 Campus Nord UPC Jordi Girona 1, 08034-Barcelona (Spain) Tel/Fax: 34+93 401 6029 / 5981 Skype: manuel_hp =======================================

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