Placement and Orientation of Rotating Directional Sensors
In this paper, the authors address several problems that arise in the context of rotating directional sensors. Rotating Directional Sensors (RDS) have a "Directional" coverage region that "rotates" at a certain speed. For RDS with fixed given locations, they address three problems with the objective to minimize different functions of the dark time (i.e., uncovered time) of the given points in the area. In addition, they also consider the problem of placement and orientation of the minimum number of given RDS, so as to reduce the dark time of all given points to zero.