@CONFERENCE\{IMM2001-0291,
    author       = "A. A. Nielsen",
    title        = "Simultaneous Determination of Water Constituent Concentrations and Partial Least Squares",
    year         = "2001",
    month        = "aug",
    booktitle    = "7th Scandinavian Symposium on Chemometrics",
    volume       = "",
    series       = "Technical University of Denmark",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "Copenhagen, Denmark",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/291-full.html",
    abstract     = "This paper deals with a physically based bio-optical model for the imultaneous determination of concentrations of water constituents chlorophyll-a (CHL), total suspended matter (TSM), and coloured, dissolved organic matter  (CDOM). The model is based on the dependency of absorption and backscatter coefficients on the constituent concentrations. A fundamental remote sensing equation is rewritten to a regression model which is used to estimate the concentrations of {CHL} and {TSM}. A weighted regression analysis is performed and the weights are determined as the weights chosen in a partial least squares (PLS) or canonical covariance analysis of in situ measurements of {CHL,} {TSM} and {CDOM} with in situ spectra in the 400-730 nm region. Resampled weights are used with geometrically corrected and calibrated airborne optical casi data to produce maps of jointly estimated {CHL} and {TSM} contents. Also, considerations to give a better understanding of the {PLS} technique than offered by the {NIPALS} algorithm are given and canonical correlations analysis is briefly described."
}