TERMIUM Plus^®

Fiche 1,  Justifications,  Anglais

Record number: 1, Textual support number: 1 CONT

ENVISAT/ASAR may be calibrated using the ERS [European Remote Sensing Satellite] instrument. Two SAR [synthetic aperture radar] images of the same area are required and at least one strong point-like target must be visible in both scenes. The target response should originate from the same stable scatterer. For the technique a very coarse digital elevation model (DEM) of the scene is suitable. The method bases on the very well-known timing parameters and high orbit accuracy of the ERS instrument (5 cm radial and 15 cm along track orbit accuracy).  2, fiche 1, Anglais, - high%20orbit%20accuracy

Fiche 1,  Justifications,  Français

Fiche 1,  Justifications,  Espagnol