Abstract
We describe a nonlinear analysis scheme capable of directly treating observations which have a non-Gaussian error distribution. This non-Gaussian analysis scheme is shown to be a generalization of the familiar optimum interpolation scheme and must be solved iteratively. the approach to the treatment of gross errors is compared with a more traditional approach in which a quality-control step precedes the analysis. Simulation experiments are performed in which the observations have many of the characteristics of observations from the proposed space-borne atmospheric laser Doppler instrument and a 50% probability of gross error. Both approaches are shown to perform well, with the non-Gaussian analysis giving the better results.
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