Statistics – Computation
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009adspr..44..535w&link_type=abstract
Advances in Space Research, Volume 44, Issue 5, p. 535-544.
Statistics
Computation
18
Scientific paper
For Precise Orbit Determination of altimetry missions, we have computed a data set of DORIS station coordinates defined for specific time intervals called DPOD2005. This terrestrial reference set is an extension of ITRF2005. However, it includes all new DORIS stations and is more reliable, as we disregard stations with large velocity formal errors as they could contaminate POD computations in the near future. About 1/4 of the station coordinates need to be defined as they do not appear in the original ITRF2005 realization. These results were verified with available DORIS and GPS results, as the integrity of DPOD2005 is almost as critical as its accuracy. Besides station coordinates and velocities, we also provide additional information such as periods for which DORIS data should be disregarded for specific DORIS stations, and epochs of coordinate and velocity discontinuities (related to either geophysical events, equipment problem or human intervention). The DPOD model was tested for orbit determination for TOPEX/Poseidon (T/P), Jason-1 and Jason-2. Test results show DPOD2005 offers improvement over the original ITRF2005, improvement that rapidly and significantly increases after 2005. Improvement is also significant for the early T/P cycles indicating improved station velocities in the DPOD2005 model and a more complete station set. Following 2005 the radial accuracy and centering of the ITRF2005-original orbits rapidly degrades due to station loss.
Fagard Hervé
Lemoine Frank G.
Pavlis Erricos C.
Ries John C.
Soudarin Laurent
No associations
LandOfFree
DPOD2005: An extension of ITRF2005 for Precise Orbit Determination does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with DPOD2005: An extension of ITRF2005 for Precise Orbit Determination, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and DPOD2005: An extension of ITRF2005 for Precise Orbit Determination will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1271204