AIRBORNE IMAGING SPECTROMETER

Specim , Spectral Imaging Ltd.aging spectrometer helps users to collect optical airborne remote sensing data for use in precision farming, environmental monitoring, forestry and other fields. This commercially available pushbroom type AISA airborne imaging spectrometer is now being offered at a reduced price. The new price brings the basic hardware costs under U.S.$ 100 000 . This price includes sensor head, GPS/INS unit and data acquisition hardware+software. The AISA system has a sensor head weighing 4 kg, and data acquisition by an off-the-shelf PC.

The AISA instrument and supporting software is designed for fast and timely operational remote sensing activities, when a short turn-around time for maximum end-user satisfaction is required. Typically is 24 hrs from collected data to visualized information. The default wavelength range of the AISA instrument is 430 nm - 900 nm, with a maximum of 286 spectral bands and a minimum spectral sampling of 1.6 nm. The total number of spatial pixels across-track is 384, with approximately 20 pixels reserved for the integrated fiber-optic downwelling irradiance sensor (FODIS).

For automatic image rectification and georeferencing the AISA system includes a miniature, high-precision integrated (D)GPS/INS unit. The AISA features in-flight band configuration in most combinations for different measurement missions and reconfiguration of the instrument without a need for any hardware adjustments. Data collected by the instrument can be pre-processed using the same PC used for office tasks, without access to UNIX workstations. The output from the pre-processing program is a calibrated, rectified and georeferenced hyperspectral image with an ENVI header file, ready for data analysis.

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