Dyonisos

DIOA 12602S011

DIOB 12602S°12

JoG DIOA break on 01-APR-1995

IDS DIOA break on 01-APR-1995

ITRF DIOA break on 01-APR-1995

DM#452 DIOB new station since 17-MAY-2006

Preliminary computations:

Geodetic local tie (SIMB) is

DIOB 12602S012 DIOA 12602S011 2.783 1.776 -2.911 0.001

DIOA in ITRF2005 are :

DIOA 2000.0 4595215.234 2039475.421 3912615.034 5.31 8.20 -8.63

DIO1 2000.0 4595215.239 2039475.423 3912615.023 5.31 8.20 -8.63

DIOB deduced from DIO1 + local tie gives

DIOB 2000.0 4595212.456 2039473.647 3912612.934 5.31 8.20 -8.63

DORIS derived position (tf_070515a) using DIOA velocity gives

2000.0 DIOB 4595212.4801 2039473.6381 3912617.9404 5.31 8.20 -8.63

statistics DIOB XYZ 0.0024 0.0027 0.0020 45

Difference between the 2 is (XYZ/mm) 24 -9 6

Using more recent DORIS data (ign07d02) and fixing velocity to ITRF2005, we obatin

2000.0 DIOB 4595212.4590 2039473.6342 3912617.9366 5.31 8.20 -8.63

statistics DIOB XYZ 0.0014 0.0014 0.0012 85

so this time, we have a good agreement

Recommendation: