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This research aims to evaluate the impact of atmospheric path delay on the geolocation accuracy of TerraSAR-X products.

Influence of Atmospheric Path Delay on the Absolute Geolocation Accuracy of TerraSAR-X High-Resolution Products

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This research aims to evaluate the impact of atmospheric path delay on the geolocation accuracy of TerraSAR-X products.
Conducted geometric validation using slant-range complex products from spotlight and stripmap modes.
Used corner reflectors placed at different altitudes for measuring atmospheric path delays.
Analyzed six TerraSAR-X scenes containing four identical corner reflectors with a 3000 m altitude difference.
Geometric validation confirmed that both spotlight and stripmap products met accuracy requirements despite challenging terrain.
Atmospheric path delay was effectively quantified using the measurements from high- and low-altitude reflectors.
Demonstrated small potential improvements in geolocation accuracy through enhanced atmospheric modeling.

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Combined investigations assess geolocation accuracy in high-resolution TerraSAR-X data, indicating potential improvements.

Schubert et al. (2010) studied this question.

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