ESA's SPectra bARrax Campaign (SPARC) activity was part of the preparatory study for a proposed ESA Earth Explorer mission called SPECTRA. The objective was to collect a CHRIS/PROBA reference dataset for SPECTRA-related studies.
This article appeared in the International Society for Photogrammetry and Remote Sensing (ISPRS 2007. 404-407, Vol. XXXVI, part 7/C50) and in the proceedings of }10th International Symposium on Physical Measurements and Spectral Signatures in Remote Sensing} held on 12-14 March 2007 in Davos, Switzerland.