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Spatial and temporal errors in ERS-2 radial positioning

Lookup NU author(s): Professor Philip Moore


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The spatial and temporal variations in dual crossovers (DXO) data between ERS-2 and TOPEX/Poseidon are identified for three orbital computations for ERS-2. The differences between the orbits and underlying gravity field result in non-zero means in the first-order spherical harmonic coefficients. Temporal variability is observed particularly at the annual cycle but the amplitude is orbital dependent with the DPAF orbits on the ERS-2 CD ROMs showing the largest annual signal. It is concluded that improvement in consistency between ERS-2 and TOPEX may be achieved by multi-satellite orbit computations where the two orbits are connected by dual crossover data.

Publication metadata

Author(s): Moore P

Publication type: Article

Publication status: Published

Journal: European Space Agency, Special Publication

Year: 2000

Issue: 461

Pages: 643-652

ISSN (print): 0379-6566

ISSN (electronic): 1609-0438

Publisher: ESA