The collision and safety control of industrial UGVs equipped with laser range finders is often based on conservative area-oriented policies that lack in flexibility and does not deal well with non ephemeral environment changes due to semi-static objects (e.g. passive misplaced objects). In this paper, we propose a method to detect and represent semi-static objects using polygonal local maps in ...

As the presentation and development of “Digital Maritime” and “E-Navigation”, Aids to Navigation (AtoN) is more and more important to marine navigation safety. In recent years, great advances have been obtained in AtoN applications. However, most domestic AtoN setting systems are based on 2D electronic chart which can not represent AtoN visual effects and its complex "interactive visual effects...

The Synthetic Vision Systems (SVS) Project of Aviation Safety Program is striving to eliminate poor visibility as a causal factor in aircraft accidents as well as enhance operational capabilities of all aircraft through the display of computer generated imagery derived from an onboard database of terrain, obstacle, and airport information. To achieve these objectives, NASA 757 flight test resea...

This paper presents a tuned behavior-based guidance algorithm for formation flight of quadrotors. The behavior-based approach provides the basis for the simultaneous realization of different behaviors such as leader following and obstacle avoidance for a group of agents; in our case they are quadcopters. In this paper optimization techniques are utilized to tune the parameters of a behavior-bas...

2 Division of Orthopaedic Surgery, The Children’s Hospital of Philadelphia, Philadelphia, PA Image guidance in spine surgery has evolved from static modalities such as the plain radiograph to navigation systems such as the O-arm. Commonly used modalities include CT scan based navigation systems, 3D fluoroscopy, and most recently the O-arm. Each of these navigation systems improved on the capabi...

The wintertime maritime traffic operations in the Gulf of Finland are managed through the Finnish-Swedish Winter Navigation System. This establishes the requirements and limitations for the vessels navigating when ice covers this area. During winter navigation in the Gulf of Finland, the largest risk stems from accidental ship collisions which may also trigger oil spills. In this article, a mod...

A Segway is often used to transport a user across mid range distances in urban environments. It has more degrees of freedom than car/bike and is faster than pedestrian. However a navigation system designed for it has not been researched. The existing navigation systems are adapted for car drivers or pedestrians. Using such systems on the Segway can increase the driver’s cognitive workload and g...

Abstract Nowadays, robust position, navigation and timing (PNT) information becomes an necessary foundation of e-navigation and requires the trials and development of a new system to improve marine navigation. Positioning estimation methods and their implementation are being investigated in the literature due to their importance in safety and national security services. In this paper, we propos...

The paper presents an analysis of ship traffic using the port Świnoujście and problems associated with modelling vessel flows. Navigation patterns were studied Automatic Identification System (AIS); was performed statistical methods historical data; probabilistic models spatial distribution its parameters. factors that influence considered to be types vessels, dimensions, distances hazards. res...

In a joint research project – Human Factors in Air Navigation Services, HUFA – between the Swedish Civil Aviation Administration and Lund University the focus is on human and organizational factors and safety in air traffic control. The Swedish Air Navigation Services (ANS) are undergoing major organizational changes in order to adapt to changing demands on efficiency and technical development ...