In many applications the information gathering process requires to obtain measurements of the phenomena of interest in harsh or dangerous conditions (e.g., environmental monitoring applications of water in a lake or search and rescue operations in disaster response). In recent years, the interest towards robotic sensors such as Unmanned Ground Vehicles (UGVs), Unmanned Aerial Vehicles (UAVs) or Autonomous Surface Vessels (ASVs) for information gathering application is steadily increasing. In general, when using mobile robotic systems, different path selection strategies could be identified. Offline strategies rely on a predefined path for the agent that is independent from the data that the sensors read. Conversely, using online strategies, the path selection procedure is dependent on the data that has been previously collected from the sensor. In this work we show two different applications for online path selection procedures that rely on a common orienteering formulation. Specifically the contribution is to highlight the formulation of the orienteering problem in the context of information gathering through the use of mobile sensors.
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