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February 1, 1995Journal of Atmospheric and Oceanic Technology

Using Topex/Poseidon Data to EnhanceERS-1Data

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Authors

PTPierre‐Yves Le TraonIfremerPGPhilippe GasparMercator Ocean (France)FBF. BouysselCentre National de Recherches Météorologiques

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Overview

Randomized trial improves ERS-1 orbit error estimation using Topex/Poseidon data, suggesting enhanced altimetric accuracy.

Key Points

  • The aim is to enhance the accuracy of ERS-1 orbit error estimation using Topex/Poseidon data.
  • Utilized TP-ERS-1 dual crossover differences for global minimization of orbit error.
  • Employed smoothing cubic-spline functions to estimate continuous orbit errors over time.
  • Focused on crossovers with time differences less than 5 days to preserve oceanic signals.
  • ERS-1-ERS-1 crossover differences reduced from 18 cm to 10 cm using dual TP-ERS-1 crossovers.
  • Global reduction of E-E crossover differences to 8 cm, particularly improving accuracy poleward of 66°.
  • Achieved orbit determination accuracy comparable to Topex, facilitating high-resolution sea level mapping.

Cite This Study

Traon et al. (1995) studied this question.

synapsesocial.com/papers/6a6fc77535aa2c282ce11e91https://doi.org/10.1175/1520-0426(1995)012<0161:utdted>2.0.co;2
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