Stereo-Photogrammetric ATSR Data Analysis

Overview

The mssl-stereomatcher extension module for BEAM can be used for the stereo-photogrammetric analysis of ATSR data.

This module supports two application cases: the retrieval of geometric cloud-top height and the assessment of the co-registration error in ATSR data. The first utilizes the Mannstein camera model to translate parallax into height, while the second uses clear views of land as ground control points to determine the presence and size of any shift between the nadir and the forward view.

Operators

Applications

This section describes the workflow for cloud-top height and co-registration shift retrieval.

While the previous brief introduction to the operators gave only instructions for the interactive use, here also the use within the BEAM Graph Processing Framework GPF is described. The GPF is built upon the concept of a workflow of data through a directed, acyclic network of processing nodes driven by a desired target product. The BEAM GPT tool reads a graph in XML format which contains descriptions of nodes, implemented by the operators described above. The nodes are chained together by their respective source and target products.

References

The scientific background to the functionality is covered following references: