Scientific preparation for use and support of the hyperspectral satellite mission - EnMAP
Funding by: Federal Ministry for Economic Affairs and Climate Action
Funding ID: 50EE1923
Project executing or management agency: DLR Space Agency
Funding period: 2020-2023
Project partners: AWI Bremerhaven I LMU München I Humboldt Universität zu Berlin I Universität Greifswald
The Environmental Mapping and Analysis Program (EnMAP) is a German hyperspectral satellite mission that aims at monitoring and characterizing the Earth’s environment on a global scale. The primary goal of EnMAP is to provide accurate diagnostic information on the state and evolution of terrestrial and aquatic ecosystems. It will allow to study environmental changes and ecosystem responses to human activities in various fields such as agriculture and forestry, geology and soils, urban areas, coastal and inland waters.
EnMAP will record the Earth's surface with a ground sampling distance (GSD) of 30 m x 30 m and a daily spatial coverage of 30 km x 5000 km. It will measure in the 420-2450 nm spectral range by means of two separate spectrometers in the visible to near-infrared (VNIR) and short-wave infrared (SWIR) spectral regions in more than 240 contiguous bands. The mean spectral sampling distance and resolution is 6.5 nm in the VNIR, and 10 nm in the SWIR. Accurate radiometric and spectral responses are guaranteed by a defined signal-to-noise ratio (SNR) of ≥ 400:1 in the VNIR and ≥ 170:1 in the SWIR, a radiometric calibration accuracy better than 5% and a spectral calibration uncertainty of 0.5 nm in the VNIR and 1 nm in the SWIR. EnMAP‘s revisit time for any site on Earth is 27 days in nadir-view, or every four days with its across-track 30° pointing capability.
The satellite system is developed in Germany under the aegis of the German Space Agency at DLR in Bonn. The German Research Centre for Geosciences (GFZ) in Potsdam is the science Principal Investigator and coordinates the EnMAP Science Advisory Group (EnSAG). OHB System AG is responsible for the design and construction of the EnMAP instrument and its satellite platform. The ground segment, responsible for satellite control, data acquisition and archiving, is realized by DLR in Oberpfaffenhofen. The project phase 2020-2023 covers the preparation program for scientific exploitation as well as mission support during the commissioning phase and the first phase of the nominal phase. The EnMAP mission development and support includes an extensive scientific programme comprising of research in various application fields, the development of software tools for hyperspectral data analysis, hyperspectral flight campaigns, product validation as well as a range of training and community building activities.