BibTeX
@INPROCEEDINGS{
         Landmann2010Tdr,
       title = "Three-dimensional reconstruction of comet nucleus by optimal control of Maxwell's
         equations: A contribution to the experiment CONSERT onboard space mission ROSETTA",
       author = "D. Landmann, D. Plettemeier, C. Statz, F. Hoffeins, U. Markwardt, W. Nagel, A.
         Walther, A. Herique, W. Kofman",
       publisher = "Institute of Electrical and Electronics Engineers",
       year = "2010",
       booktitle = "Proceedings of 2010 IEEE Radar Conference",
       pages = "1392--1396",
       abstract = "COmet Nucleus Sounding Experiment by Radio Wave Transmission (CONSERT) is one of 20
         experiments onboard the ESA mission Rosetta and aimed at the reconstruction of the unknown internal
         material parameter distribution of a comet nucleus. The details on the experiment setup can be found
         in \cite{kof07},\cite{kof01}. CONSERT consists of a lander module which attaches to the
         surface of the comet and an orbiter module which circulates the comet in space. An electromagnetic
         sounding of the comet nucleus will be achieved by a signal link between the lander and orbiter
         antenna system. We propose an optimal control approach to solve for the unknown 3D material
         parameter distribution of the comet nucleus. We optimize the computed electromagnetic field
         distribution at the receiver locations for the measured (observed) electromagnetic field
         distribution by controlling the material parameters. The target functional, the difference between
         computed and observed field for all receiver locations and time steps is minimized by means of a
         gradient-based quasi-Newton optimization algorithm. The optimal control problem is solved if the
         target functional yields its global minimum.",
       ad_tools = "ADOL-C",
       ad_theotech = "Adjoint, Checkpointing",
       ad_area = "Inverse Problems"
}