Index: /trunk/BNC/src/bnchelp.html =================================================================== --- /trunk/BNC/src/bnchelp.html (revision 8094) +++ /trunk/BNC/src/bnchelp.html (revision 8095) @@ -3942,7 +3942,6 @@
-GDA94: The formulas for the transformation 'ITRF2008->GDA94' are taken from 'John Dawson, Alex Woods 2010: ITRF to GDA94 coordinate transformations', Journal of Applied Geodesy, 4 (2010), 189-199, de Gruyter 2010. DOI 10.1515/JAG.2010.019'. -
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-Translation in X at epoch To: -0.08468 m -Translation in Y at epoch To: -0.01942 m -Translation in Z at epoch To: 0.03201 m -Translation rate in X: 0.00142 m/y -Translation rate in Y: 0.00134 m/y -Translation rate in Z: 0.00090 m/y -Rotation in X at epoch To: 0.4254 mas -Rotation in Y at epoch To: -2.2578 mas -Rotation in Z at epoch To: -2.4015 mas -Rotation rate in X: -1.5461 mas/y -Rotation rate in Y: -1.1820 mas/y -Rotation rate in Z: -1.1551 mas/y -Scale at epoch To : 0.000000009710 -Scale rate: 0.000000000109 /y -To: 1994.0 +In order to perform a transformation 'ITRF2014->NAD83', a transformation 'ITRF2014->ITRF2008' is done at first. + + +- - -+GDA2020: The formulas for the transformation 'ITRF2014->GDA2020' were provided via personal communication from Ryan Ruddick: 'Geocentric Datum of Australia 2020, Interim Release Note Version 1.01, Intergovernmental Committee on Surveying and Mapping (ICSM), Permanent Committee on Geodesy (PCG), 03 March 2017'. +
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+Translation in X at epoch To: 0.0 m +Translation in Y at epoch To: 0.0 m +Translation in Z at epoch To: 0.0 m +Translation rate in X: 0.0 m/y +Translation rate in Y: 0.0 m/y +Translation rate in Z: 0.0 m/y +Rotation in X at epoch To: 0.0 mas +Rotation in Y at epoch To: 0.0 mas +Rotation in Z at epoch To: 0.0 mas +Rotation rate in X: 1.50379 mas/y +Rotation rate in Y: 1.18346 mas/y +Rotation rate in Z: 1.20716 mas/y +Scale at epoch To : 0.0 +Scale rate: 0.0/y +To: 2020.0@@ -4047,36 +4048,13 @@ Translation rate in Y: 0.0000 m/y Translation rate in Z: 0.0000 m/y -Rotation in X at epoch To: 0.170 mas -Rotation in Y at epoch To: -0.030 mas -Rotation in Z at epoch To: 0.070 mas +Rotation in X at epoch To: 0.0000 mas +Rotation in Y at epoch To: 0.0000 mas +Rotation in Z at epoch To: 0.0000 mas Rotation rate in X: 0.000 mas/y Rotation rate in Y: 0.000 mas/y Rotation rate in Z: 0.000 mas/y -Scale at epoch To : -0.000000001000 +Scale at epoch To : 0.000 Scale rate: 0.000000000000 /y -To: 0000.0 -
-SIRGAS95: The formulas for the transformation 'ITRF2005->SIRGAS95' were provided via personal communication from Gustavo Acuha, Laboratorio de Geodesia Fisica y Satelital at Zulia University (LGFS-LUZ), parameters based on values from Table 4.1 of "Terrestrial Reference Frames (April 10, 2009), Chapter 4" in http://tai.bipm.org/iers/convupdt/convupdt_c4.html.. -
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-Translation in X at epoch To: 0.0077 m -Translation in Y at epoch To: 0.0058 m -Translation in Z at epoch To: -0.0138 m -Translation rate in X: 0.0000 m/y -Translation rate in Y: 0.0000 m/y -Translation rate in Z: 0.0000 m/y -Rotation in X at epoch To: 0.000 mas -Rotation in Y at epoch To: 0.000 mas -Rotation in Z at epoch To: -0.003 mas -Rotation rate in X: 0.000 mas/y -Rotation rate in Y: 0.000 mas/y -Rotation rate in Z: 0.000 mas/y -Scale at epoch To : 0.00000000157 -Scale rate: -0.000000000000 /y -To: 1995.4 +To: 20000.0@@ -4103,4 +4081,5 @@ To: 2000.0 +In order to perform a transformation 'ITRF2014->DREF91', a transformation from 'ITRF2014->ITRF2008' is done at first. @@ -5280,5 +5259,4 @@