A technique for constructing spectral reflectance curves from Viking lander camera multispectral data

Details A technique for constructing spectral reflectance curves from Viking lander camera multispectral data A technique for constructing spectral reflectance curves from Viking lander camera multispectral data

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975stin...7532985p&link_type=abstract

Unknown

Physics

Curve Fitting, Multispectral Photography, Spectral Reflectance, Viking Lander Spacecraft, Cameras, Data Sampling, Satellite Observation

Scientific paper

A technique for evaluating the construction of spectral reflectance curves from multispectral data obtained with the Viking lander cameras is presented. The multispectral data is limited to 6 channels in the wave-length range 0.4 to 1.1 microns, and several of the channels suffer from appreciable out-of-band response. The technique represents the estimated reflectance curves as a linear combination of known basic functions with coefficients determined to minimize the error in the representation, and it permits all channels, with and without out-of-band response, to contribute equally valid information. The technique is evaluated for known spectral reflectance curves of 8 materials felt likely to be present on the Martian surface. The technique provides an essentially exact fit if the the reflectance curve has no pronounced maxima and minima. Even if the curve has pronounced maxima and minima, the fit is good and reveals the most dominant features. Since only 6 samples are available some short period features are lost. This loss is almost certainly due to undersampling rather than out-of-band channel response.

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