A Brief History of the Inflight Spectral and Radiometric Performance of EnMAP

Kurzfassung

The Environmental Mapping and Analysis Program (EnMAP) of the German Aerospace Center (DLR) was launched in April 2022 and provides users with hyperspectral imagery to monitor and study the dynamic processes on our planet. EnMAP covers a spectral range of 418 – 2445 nm with two sensors, one for the Visible and Near Infrared (VNIR) and one for Short-Wave Infrared (SWIR), at a spatial resolution of 30 m, a swath width of 30 km and a maximum coverage of 5000 km per day. The raw images captured by EnMAP are radiometrically corrected during L1 processing and, to ensure that high quality Earth observations are acquired, it is vital that accurate spectral and radiometric calibration tables are obtained. For this, EnMAP has five onboard calibration systems which are frequently used to assess and monitor the characteristics of the VNIR and SWIR sensors.