By Christopher Jekeli, Luisa M.C. Bastos, Joana Fernandes
This quantity represents the lawsuits of the overseas Symposium on Gravity, Geoid, and house Missions (GGSM2004), held in Porto, Portugal, 30 August - three September 2004. The symposium encompassed the subjects of fee 2 (Gravity box) of IAG, in addition to interdisciplinary subject matters on the topic of geoid and gravity box, together with integration of heterogeneous facts and contributions from satellite tv for pc and airborne concepts. particular concentration was once on gravity-dedicated satellite tv for pc missions like CHAMP, GRACE, and GOCE. tasks addressing topographic and ice box mapping utilizing SAR, LIDAR, and laser altimetry, in addition to missions and experiences concerning planetary geodesy have been additionally coated.
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Extra resources for Gravity, Geoid and Space Missions: GGSM 2004. IAG International Symposium. Porto, Portugal. August 30 - September 3, 2004 (International Association of Geodesy Symposia, 129)
Kenyon, D. Schmidt, and R. Trimmer National Geospatial-Intelligence Agency, Arnold, Missouri 63010, USA tion of satellite-only gravitational models. Nevertheless, there is still a need to combine that information with terrestrial gravity and satellite altimetry data in an optimal fashion. Such combination could permit the "seamless" extension of the gravitational spectrum (beyond the resolution recoverable from space techniques), taking advantage of the rich high frequency content in surface gravimetric and altimetric data.
4: outliers removed, MCVCE weighting. , 1998). In the computations of solutions 1 and 3, this was achieved using equal weights for each normal matrix. In the computations of solutions 2 and 4, use was made of MCVCE to estimate the weights of the normal matrices. 439 for data groups 1,2,3 and 4 resp. 216. This is equivalent to an increase of the standard deviations by a factor ^ 2. Similar weights were found in the computation of solution 2. Fig. 2 Comparison between the weights computed with MCVCE and with MCMINQUE with all outliers present.
PGM2004A's signal spectrum dips below its error spectrum around degree 2010. In addition to an error spectrum, PGM2004A is accompanied by global 5'x5' geographic grids of its propagated (commission) error on geoid undulations, gravity anomalies, deflections of the vertical, and gravity disturbances. These grids were computed using the technique of Pavlis and Saleh (this issue), and, for the first time, correspond to the entire bandwidth of the model, up to degree and order 2160. Figure 3 shows the geoid undulation propagated error of PGM2004A to degree 2160.
Gravity, Geoid and Space Missions: GGSM 2004. IAG International Symposium. Porto, Portugal. August 30 - September 3, 2004 (International Association of Geodesy Symposia, 129) by Christopher Jekeli, Luisa M.C. Bastos, Joana Fernandes