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The Specim AISA Eagle & Hawk

The Specim Eagle sensor head

The scan head of the Specim Eagle instrument

In 2014 the Specim Eagle and Hawk hyperspectral sensors will be retired and replaced with a new sensor, the AisaFENIX. This will be complemented by the AisaOWL thermal imaging system due to be delivered in Q1 2014.

The AISA Eagle is a 12 bit, pushbroom, hyperspectral sensor with a 1000 pixel swath width, covering the visible and near infra-red spectrum 400 - 970nm. The maximum spectral resolution of the sensor is 2.9nm. Also output to the Eagle are data from the fibre optic downwelling irradiance sensor (FODIS). Full details of the sensor can be downloaded from Specim's websiteexternal link.

The AISA Eagle requires good atmospheric conditions for the collection of narrow spectral wavebands. In the UK we are yet to collect data better that 2.5nm bandwidth (spectrally binning by 2). In less than perfect illumination or atmospheric conditions the instrument may require spectral and/or spatial binning to allow data to be collected. Should perfect optical conditions be essential for your project then there can be no guarantee that these conditions may coincide with the availability of the aircraft in a single flying season. If this project depends on its support in the flying season immediately following the year of submission (or if spectral quality is less of a concern) then additional guidance concerning spatial and spectral binning should be sought.

The Specim Hawk sensor head

The scan head of the Specim Hawk instrument

The AISA Hawk is a 14 bit sensor able to capture short wave infrared wavelengths, 970 - 2450nm. This makes the Hawk an ideal tool for data acquisition on spectral signatures characteristic to chemical compounds and man-made targets that can not be distinguished using the Eagle instrument. The Hawk has 320 spatial pixels, 244 spectral pixels and a maximum spectral resolution of 8nm. Full details of the sensor can be downloaded from Specim's websiteexternal link.

See a sample of AISA Eagle and Hawk spectra.