Calibration of airborne image spectrometers : A methodology based on ground measurements
Several airborne imaging spectrometric scanners have been developed and flown throughout the world. In Europe, in view of the planned European Polar Platform, experimental airborne flight missions were performed in 1989 and 1990 with the FLI, GER and CASI systems, while others were planned for 1991 including some with the AVIRIS systems. A common problem with data acquired from these systems has been the absolute calibration, in radiometric units, which has caused serious problems in the data analysis as well as in the application of atmospheric correction procedures when these are required. This work starts with an analysis of the existing situation with FLI, GER and CASI data and points out certain problems. A methodology which makes use of ground based radiometric measurements, performed simultaneously with the overflights, is described. This methodology makes it possible to check the actual calibration, as well as to establish a true calibration in situations where the declared calibration turns out to be unreliable.
Bibliographic Reference: Paper presented: IGARSS '91, Espoo (FI), June 3-6, 1991
Availability: Available from (1) as Paper EN 36038 ORA
Record Number: 199111592 / Last updated on: 1994-12-02
Original language: en
Available languages: en