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S. Verhagen, D. Grejner-Brzezinska, G. Retscher, M. Santos, X. Ding, Y. Gao, S. Jin, R. Weber:
"Geodetic Sensor Systems and Sensor Networks - Positioning and Applications";
accepted for publication in: "Papers presented at the 7th Hotine-Marussi Symposium, July 6-10, Rome, Italy", Springer, Rome, 2009.

This contribution focuses on geodetic sensor systems and sensor networks for positioning and applications. A review of state-of-the-art systems will be given, and the key problems in this area will be addressed. Global Navigation Satellite Systems (GNSS) and other geodetic techniques play a central role in many applications like engineering, mapping and remote sensing. These techniques include precise positioning, but also research into non-positioning applications like atmospheric sounding using continuously operating GNSS networks. An important research area is multi-sensor system theory and applications to airborne and land-based platforms, indoor and pedestrian navigation, as well as environmental monitoring. The primary sensors of interest will be GNSS and inertial navigation systems. Furthermore, Interferometric Synthetic Aperture Radar (InSAR) is recognized as one of the most important state-of-the-art geodetic technologies used for generation of Digital Elevation Models and accurately measuring ground deformations.