VENµS PRODUCTION AND IMAGE QUALITY MONITORING OPERATIONS

In CNES premises, VENµS scientific image ground segment is, on one hand; dedicated to process up to Level-2 products and, on the other hand, to expertise and monitor VENµS image quality.

In this context, the ground segment breakdown is first introduced to emphasize the image programming loop, and also to introduce the image quality monitoring process.

Afterwards, from telemetry downloading to upper-level products generation, the different processing involved are detailed and statistics are presented to give an updated status of the whole VENµS data archive. In this frame, the differences existing in the completeness of the time series delivered are explained (cloud coverage influence, internal evolution of correction parameters, status of reprocessing potentially ongoing…).

Concerning image quality monitoring, the main radiometric and geometric activities carried out are addressed, with a focus on reference data generation, which is highly dependent on the characteristics of the geographical area acquired. Additional operational activities are also considered to give, finally, a panel of the different procedures aimed at maintaining an optimal image quality for VENµS products.