NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Algorithm for Atmospheric Corrections of Aircraft and Satellite ImageryA simple and fast atmospheric correction algorithm is described which is used to correct radiances of scattered sunlight measured by aircraft and/or satellite above a uniform surface. The atmospheric effect, the basic equations, a description of the computational procedure, and a sensitivity study are discussed. The program is designed to take the measured radiances, view and illumination directions, and the aerosol and gaseous absorption optical thickness to compute the radiance just above the surface, the irradiance on the surface, and surface reflectance. Alternatively, the program will compute the upward radiance at a specific altitude for a given surface reflectance, view and illumination directions, and aerosol and gaseous absorption optical thickness. The algorithm can be applied for any view and illumination directions and any wavelength in the range 0.48 micron to 2.2 micron. The relation between the measured radiance and surface reflectance, which is expressed as a function of atmospheric properties and measurement geometry, is computed using a radiative transfer routine. The results of the computations are presented in a table which forms the basis of the correction algorithm. The algorithm can be used for atmospheric corrections in the presence of a rural aerosol. The sensitivity of the derived surface reflectance to uncertainties in the model and input data is discussed.
Document ID
19900004660
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Fraser, Robert S. (NASA Goddard Space Flight Center Greenbelt, MD., United States)
Kaufman, Yoram J. (Maryland Univ. College Park., United States)
Ferrare, Richard A. (Universities Space Research Association Greenbelt, MD., United States)
Mattoo, Shana (Applied Research Corp. Landover, MD., United States)
Date Acquired
September 6, 2013
Publication Date
December 1, 1989
Subject Category
Computer Programming And Software
Report/Patent Number
REPT-90B00032
NAS 1.15:100751
NASA-TM-100751
Accession Number
90N13976
Funding Number(s)
CONTRACT_GRANT: NAG5-203
CONTRACT_GRANT: NAS5-30430
PROJECT: RTOP 677-22-29-01
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available