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Applied Optics

Applied Optics


  • Vol. 13, Iss. 4 — Apr. 1, 1974
  • pp: 942–945

Information Content in Remote Sensing

S. Twomey  »View Author Affiliations

Applied Optics, Vol. 13, Issue 4, pp. 942-945 (1974)

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The relation between eigenvalues of the kernel covariance matrix in inversion problems and the number of pieces of information that can be extracted is discussed. It is shown that an example given by Wang and Goulard, which was claimed to show that the eigenvalue analysis underestimated the information content, was incorrectly calculated.

© 1974 Optical Society of America

Original Manuscript: May 29, 1973
Published: April 1, 1974

S. Twomey, "Information Content in Remote Sensing," Appl. Opt. 13, 942-945 (1974)

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  1. S. Twomey, J. Franklin Inst. 279 (2), 95 (1965). [CrossRef]
  2. J. Y. Wang, R. Goulard, Purdue University Research Report, Project 5543 (1972).
  3. Fractional powers do not apply in general in matrix algebra, but with diagonal matrices such as Λ their significance is obvious (and unambiguous).
  4. S. Twomey, H. B. Howell, Appl. Opt. 6 (12), 2125 (1967. [CrossRef] [PubMed]

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