Specific Instrument Processing
Data processing is performed in four different ways:
Further processing is applied to obtain Unconsolidated and Consolidated data. Unconsolidated data are commonly used for instrument performance monitoring. Consolidated data are produced using the most precise auxiliary information available and generated off-line. Consolidated data are time-ordered, fully validated and show no overlap or data gaps.
Click the links below for detailed information on a specific instrument.
Envisat data processing to Level 0, Level 1 and Level 2 is performed in different ways:
Systematic and 'user on-demand' processing
Products are generated either systematically or only when there is a specific request from a user. The products ASAR GM and WV modes are generated systematically as well as the ASAR HR Medium Resolution products while the ASAR HR High Resolution products are only processed on request.
Near Real Time (NRT) and off-line processing
Products are generated either in Near Real Time at the acquisition facilities (typically 3 hours from data acquisition for Low Bit Rate data and one day for High Bit Rate data) or off-line at the Processing and Archiving Centers (PACs) a few weeks after acquisition. Off-line products have the same format and content than NRT products, but benefit from a posteriori knowledge of calibration, auxiliary data and precise orbit. They are called consolidated products.
Data reprocessing (i.e. Level 1 and Level 2) is a regular activity as a consequence of the improvement of the processing algorithms.
How to access EO data