The Environmental Mapping and Analysis Program (EnMAP) is a German hyperspectral satellite mission that aims at monitoring and characterising the Earth’s environment on a global scale. EnMAP serves to measure and model key dynamic processes of the Earth’s ecosystems by extracting geochemical, biochemical and biophysical parameters, which provide information on the status and evolution of various terrestrial and aquatic ecosystems.
Once operating, EnMAP will provide unique data needed to address major environmental challenges related to human activity and climate change. The mission’s main objective is to study and decipher coupled environmental processes and to assist and promote the sustainable management of the Earth’s resources. Despite being a primarily scientific mission, EnMAP has a clear potential to evolve towards operational service.
Mission Outline
Dedicated imaging push broom hyperspectral sensor mainly based on modified existing or pre-developed technology •Broad spectral range from 420 nm to 1000 nm (VNIR) and from 900 nm to 2450 nm (SWIR) with high radiometric resolution and stability in both spectral ranges •Swath width 30km at high spatial resolution of 30 m x 30 m and off-nadir (30°) pointing feature for fast target revisit (4 days) •Sufficient on-board memory to acquire 1,000 km swath length per orbit and a total of 5,000 km per day.
For more information:http://www.enmap.org/index.html
ENMAP TECHNICAL SPECIFICATIONS:
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Spectral range: |
420 nm - 2450 nm |
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Spectral sampling distance: |
6.5 nm (420 nm - 1000 nm; VNIR) 10 nm (900 nm - 2450 nm; SWIR) |
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Spectral accuracy: |
0.5 nm (VNIR) / 1.0 nm (SWIR) |
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Signal-to-Noise ratio: |
500 (at 495 nm; VNIR) 150 (at 2200 nm; SWIR) |
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Radiometric resolution: |
14 bits |
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Geometric resolution: |
30 m × 30 m (swath width: 30 km) (IFOV 9.5 arcsec × integration time 4.4 ms (FOV 2.63 deg)) swath length of 5000 km per day with 512 Gbit on-board mass memory |
EnMAP Orbit and Communication Specifications
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Orbit altitude: |
652 km (7020.4 km semi-major axis) |
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Repeat cycle: |
27 days, 398 revolutions |
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Inclination angle: |
97.98° (polar, sun-synchronous) |
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Orbital period: |
5854 s |
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Revisit: |
4 days (±30° off-nadir tilt) 27 days (±5° off-nadir tilt) |
EnMAP Platform and Launcher Specifications
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Size of satellite: |
3.1 m × 2.0 m × 1.7 m |
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Launch mass of satellite: |
936 kg (including 55 kg hydrazine) |
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Launcher: |
Indian PSLV (Polar Satellite Launch Vehicle) rocket |
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Launch site: |
Sriharikota, India |
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Launch date: |
2018 |
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Operational lifetime: |
>5 years |
