从ITRF2008到过去ITRFs的转换参数。

2020-3-31 11:58:54 来源: ITRF 发布人:

Transformation parameters from ITRF2008 to past ITRFs.  

Transformation parameters from ITRF2008 to past ITRFs.
----------------------------------------------------------------------------------------
SOLUTION Tx Ty Tz D Rx Ry Rz EPOCH
UNITS----------> mm mm mm ppb .001" .001" .001"
. . . . . . .
RATES Tx Ty Tz D Rx Ry Rz
UNITS----------> mm/y mm/y mm/y ppb/y .001"/y .001"/y .001"/y
-----------------------------------------------------------------------------------------
ITRF2005 -2.0 -0.9 -4.7 0.94 0.00 0.00 0.00 2000.0
rates 0.3 0.0 0.0 0.00 0.00 0.00 0.00
ITRF2000 -1.9 -1.7 -10.5 1.34 0.00 0.00 0.00 2000.0
rates 0.1 0.1 -1.8 0.08 0.00 0.00 0.00
ITRF97 4.8 2.6 -33.2 2.92 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF96 4.8 2.6 -33.2 2.92 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF94 4.8 2.6 -33.2 2.92 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF93 -24.0 2.4 -38.6 3.41 -1.71 -1.48 -0.30 2000.0
rates -2.8 -0.1 -2.4 0.09 -0.11 -0.19 0.07
ITRF92 12.8 4.6 -41.2 2.21 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF91 24.8 18.6 -47.2 3.61 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF90 22.8 14.6 -63.2 3.91 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF89 27.8 38.6 -101.2 7.31 0.00 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
ITRF88 22.8 2.6 -125.2 10.41 0.10 0.00 0.06 2000.0
rates 0.1 -0.5 -3.2 0.09 0.00 0.00 0.02
_________________________________________________________________________________________

Note : These parameters are derived from those already published in the IERS
Technical Notes and Annual Reports. The transformation parameters should be
used with the standard model (1) given below and are valid at the indicated
epoch.


: XS : : X : : Tx : : D -Rz Ry : : X :
: : : : : : : : : :
: YS : = : Y : + : Ty : + : Rz D -Rx : : Y : (1)
: : : : : : : : : :
: ZS : : Z : : Tz : : -Ry Rx D : : Z :


Where X,Y,Z are the coordinates in ITRF2008 and XS,YS,ZS are the coordinates in
the other frames.

On the other hand, for a given parameter P, its value at any epoch t
is obtained by using equation (2).

.
P(t) = P(EPOCH) + P * (t - EPOCH) (2)


where EPOCH is the epoch indicated in the above table (currently 2000.0)
.
and P is the rate of that parameter.


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