Simulation of APEX data: the SENSOR approach

Anko Boerner; Michael E. Schaepman; Daniel Schlaepfer; Lorenz Wiest; Ralf Reulke

doi:10.1117/12.366285

27 October 1999 Simulation of APEX data: the SENSOR approach

Anko Boerner, Michael E. Schaepman, Daniel Schlaepfer, Lorenz Wiest, Ralf Reulke

Proceedings Volume 3753, Imaging Spectrometry V; (1999) https://doi.org/10.1117/12.366285
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The consistent simulation of airborne and spaceborne hyperspectral data is an important task and sometimes the only way for the adaptation and optimization of a sensor and its observing conditions, the choice and test of algorithms for data processing, error estimations and the evaluation of the capabilities of the whole sensor system. The integration of three approaches is suggested for the data simulation of APEX (Airborne Prism Experiment): (1) a spectrally consistent approach (e.g. using AVIRIS data), (2) a geometrically consistent approach (e.g. using CASI data), and (3) an end-to- end simulation of the sensor system. In this paper, the last approach is discussed in detail. Such a technique should be used if there is no simple deterministic relation between input and output parameters. The simulation environment SENSOR (Software Environment for the Simulation of Optical Remote Sensing Systems) presented here includes a full model of the sensor system, the observed object and the atmosphere. The simulator consists of three parts. The first part describes the geometrical relations between object, sun, and sensor using a ray tracing algorithm. The second part of the simulation environment considers the radiometry. It calculates the at-sensor-radiance using a pre-calculated multidimensional lookup-table for the atmospheric boundary conditions and bi- directional reflectances. Part three consists of an optical and an electronic sensor model for the generation of digital images. Application-specific algorithms for data processing must be considered additionally. The benefit of using an end- to-end simulation approach is demonstrated, an example of a simulated APEX data cube is given, and preliminary steps of evaluation of SENSOR are carried out.

Citation Download Citation

Anko Boerner, Michael E. Schaepman, Daniel Schlaepfer, Lorenz Wiest, and Ralf Reulke "Simulation of APEX data: the SENSOR approach", Proc. SPIE 3753, Imaging Spectrometry V, (27 October 1999); https://doi.org/10.1117/12.366285

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