Now showing items 1-3 of 3

    • Extended triple collocation: estimating errors and correlation coefficients with respect to an unknown target 

      McColl, Kaighin Alexander; Vogelzang, Jur; Konings, Alexandra G.; Entekhabi, Dara; Piles Guillem, Maria; Stoffelen, Ad (2014-09-16)
      Article
      Open Access
      Calibration and validation of geophysical measurement systems typically require knowledge of the true value of the target variable. However, the data considered to represent the true values often include their own measurement ...
    • How many parameters can be maximally estimated from a set of measurements? 

      Konings, Alexandra G.; McColl, Kaighin Alexander; Piles Guillem, Maria; Entekhabi, Dara (2015-05-01)
      Article
      Open Access
      Remote sensing algorithms often invert multiple measurements simultaneously to retrieve a group of geophysical parameters. In order to create a robust retrieval algorithm, it is necessary to ensure that there are more ...
    • Uncertainty analysis of soil moisture and vegetation indices using aquarius scatterometer observations 

      McColl, Kaighin Alexander; Entekhabi, Dara; Piles Guillem, Maria (Institute of Electrical and Electronics Engineers (IEEE), 2014-07-01)
      Article
      Restricted access - publisher's policy
      Simple functions of radar backscatter coefficients have been proposed as indices of soil moisture and vegetation, such as the radar vegetation index, i.e., RVI, and the soil saturation index, i.e., m(s). These indices are ...