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A spectral reflectance estimation technique using multispectral data from the viking lander camera
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Huck, F. O. Park, S. K. |
| Copyright Year | 1976 |
| Description | A technique is formulated for constructing spectral reflectance curve estimates from multispectral data obtained with the Viking lander camera. The multispectral data are limited to six spectral channels in the wavelength range from 0.4 to 1.1 micrometers and most of these channels exhibit appreciable out-of-band response. The output of each channel is expressed as a linear (integral) function of the (known) solar irradiance, atmospheric transmittance, and camera spectral responsivity and the (unknown) spectral responsivity and the (unknown) spectral reflectance. This produces six equations which are used to determine the coefficients in a representation of the spectral reflectance as a linear combination of known basis functions. Natural cubic spline reflectance estimates are produced for a variety of materials that can be reasonably expected to occur on Mars. In each case the dominant reflectance features are accurately reproduced, but small period features are lost due to the limited number of channels. This technique may be a valuable aid in selecting the number of spectral channels and their responsivity shapes when designing a multispectral imaging system. |
| File Size | 6420907 |
| Page Count | 45 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19770004156 |
| Archival Resource Key | ark:/13960/t1rg0ht8j |
| Language | English |
| Publisher Date | 1976-11-01 |
| Access Restriction | Open |
| Subject Keyword | Spacecraft Instrumentation Mars Planet Viking Lander Spacecraft Imaging Techniques Multispectral Photography Spline Functions Multispectral Band Cameras Solar Radiation Spectral Reflectance Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
