DATA PROCESSING FOR THE SPACE-BASED DESIS HYPERSPECTRAL SENSOR
- 1German Aerospace Center (DLR), Earth Observation Center (EOC), 82234 Wessling, Germany
- 2German Aerospace Center (DLR), Optical Sensor Systems, Rutherfordstraße 2, 12489 Berlin, Germany
- 3GeoCue LLC, 9668 Madison Blvd., Suite 202, Madison, AL 35758, USA
- 4German Aerospace Center (DLR), Strategie und Vernetzungen, Linder Höhe, 51147 Köln, Germany
- 5Teledyne Brown Engineering, 300 Sparkman Drive NW Huntsville, AL 35805, USA
Keywords: Data processing, hyperspectral, ISS, geometric correction, atmospheric correction, rolling shutter
Abstract. The German Aerospace Center (DLR) and Teledyne Brown Engineering (TBE) have established a collaboration to develop and operate a new space-based hyperspectral sensor, the DLR Earth Sensing Imaging Spectrometer (DESIS). DESIS will provide spacebased hyperspectral data in the VNIR with high spectral resolution and near-global coverage. While TBE provides the platform and infrastructure for operation of the DESIS instrument on the International Space Station, DLR is responsible for providing the instrument and the processing software. The DESIS instrument is equipped with novel characteristics for an imaging spectrometer such high spectral resolution (2.55 nm), a mirror pointing unit or a CMOS sensor operated in rolling shutter mode. We present here an overview of the DESIS instrument and its processing chain, emphasizing the effect of the novel characteristics of DESIS in the data processing and final data products. Furthermore, we analyse in more detail the effect of the rolling shutter on the DESIS data and possible mitigation/correction strategies.