The SAR (Synthetic Aperture Radar) Copernicus Sentinel-1 satellites require a high orbit accuracy of 5 cm in 3D in comparison to external processing facilities. The official orbit products delivered by the Copernicus POD (Precise Orbit Determination) Service fulfil this requirement. Nevertheless. analyses have shown discrepancies in the orbit results for the two satellites Sent... https://herbsdailyes.shop/product-category/self-help-aids/