1. Summary Sensor systems supporting autonomous navigation of mobile robots have been developed for different commercial application areas. These approaches have been transferred to electrical wheelchairs to assist disabled people in their mobility, by warning of obstacles in the way and by assisting in the navigation to return back home. The technical approach is based on a lowcost sensor data...

Modern day personal navigation devices are often realized as a multi-sensor integrated navigation system wherein the measurements from various sensors are combined to generate a navigation solution. A fault occurring in any of these sensors can affect the performance of the navigation system, potentially compromising the reliability of the navigation solution. It is thus imperative to detect an...

Abstract Navigation, also known as discovering one’s direction, is a complex human activity. To produce effective routes, it relies on knowledge of the surroundings’ precise geometry and semantic information. Complex geometrical data can be precisely delineated with improvement 3D geometric models. A model containing specifically built-in Building Information Modelling (BIM) environment integra...

The medial axis is an important shape descriptor first introduced by Blum [2] via a grassfire burning analogy. However, the medial axes are sensitive to boundary perturbations, which calls for global shape measures to identify meaningful parts of a medial axis. On the other hand, a more compact shape representation than the medial axis, such as a “center point”, is needed in various application...

The paper surveys recent advances in underwater vehicle navigation and identifies future research challenges. Improvements in underwater navigation sensor technology and underwater navigation algorithms are enabling novel underwater vehicles and novel underwater vehicle missions. This paper first reviews advances in underwater navigation sensor technology. Second, advances in deterministic and ...

An experimental approach on the online sensor based navigation of a mobile robot in unknown environment is presented. Based on the range data from the equipped range scanner on the robot, the mobile robot rather finding passable free space to approach the given goal. Experimental setups, simple navigation algorithm implemented and experimental results are presented.

We describe a region-based shape representation that might be particularly useful from a biological perspective because it promotes the localization of objects, and object parts relative to each other. The proposed medial-point representation is similar to medial-axis type representations, but it is more compact. The medial points are those points along the medial axis that are equidistant from...

Brain oscillatory correlates of spatial navigation were investigated using blind source separation (BSS) and standardized low resolution electromagnetic tomography (sLORETA) analyses of 62-channel EEG recordings. Twenty-five participants were instructed to navigate to distinct landmark buildings in a previously learned virtual reality town environment. Data from periods of navigation between la...

Navigation plays a vital role in our daily life. As traditional and commonly used navigation technologies, Inertial Navigation System (INS) and Global Navigation Satellite System (GNSS) can provide accurate location information, but suffer from the accumulative error of inertial sensors and cannot be used in a satellite denied environment. The remarkable navigation ability of animals shows that...