PRISMA (spacecraft)

Overview

Scientific objectives

• Implementation of an Earth Observation pre-operative mission.
• In orbit demonstration and qualification of an Italian state-of-the-art hyperspectral/panchromatic technology.
• Validation of end-to-end data processing able to develop new applications of spectral resolution images.
• Capitalization of ASI heritage, specifically canceled HypSEO mission and Italian-Canadian Joint Hyperspectral Mission.

  Payload

• PRISMA : a prism spectrometer composed of the Hyp/Pan camera, an optical head and the main electronics box. The design is based on a pushbroom type observation concept providing hyperspectral imagery at a spatial resolution of 30 m on a swath of 30 km. The spectral resolution is better than 12 nm in a spectral range of 400-2500 nm. In parallel, Pan imagery is provided at a spatial resolution of 5 m; the Pan data is co-registered with the Hyp data to permit testing of image fusion techniques.
• Internal Calibration Unit : an instrument designed to allow the support of absolute and relative radiometric calibrations and spectral calibrations.
• Payload Data Handling and Transmission: This subsystem, of COSMO-SkyMed heritage, is dedicated to the processing of the payload data for the X band downlink to the CGS of Matera.