Changeset 1019 in ntrip for trunk/BNS/bnshelp.html


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Timestamp:
Aug 5, 2008, 10:45:05 AM (16 years ago)
Author:
weber
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* empty log message *

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1 edited

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  • trunk/BNS/bnshelp.html

    r1018 r1019  
    188188</p>
    189189<p>
    190 <u>Concerning 'IGS05';</u>
    191 As the clocks and orbits coming from real-time GNSS engine are expected to be in the 'IGS05' system, no transformation is carried out if this option is selected.
    192 </p>
    193 <p>
    194 <u>Concerning 'ETRS89';</u>
     190<u>IGS05:</u>
     191As the clocks and orbits coming from real-time GNSS engine are expected to be in the IGS05 system, no transformation is carried out if this option is selected.
     192</p>
     193<p>
     194<u>ETRS89:</u>
    195195From the complete transformation chain 'IGS05->ITRF2005->ITRF2000->ETRS89' only the transformation 'ITRF2000->ETRS89' has been implemented. The formulas for that are taken from 'Boucher and Altamimi 2007: Specifications for reference frame fixing in the analysis of EUREF GPS campaign', see <u>http://etrs89.ensg.ign.fr/memo2007.pdf</u>. The following 6 Helmert transformation parameters were introduced:
    196196</p>
     
    206206</p>
    207207<p>
    208 Note that the neglect of transformations 'IGS05->ITRF2005->ITRF2000' in BNS may lead to discrepancies up to 2 centimenters.
     208Note that the neglect of transformations 'IGS05->ITRF2005->ITRF2000' in BNS may cause discrepancies up to a maximum of 2 centimenters.
    209209<p>
    210210
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