The traditional celestial navigation system(CNS) is used the moon, stars, and planets as celestial guides. Then the star tracker(i.e. track one star or planet or angle between it) and star sensor(i.e. sense many star simultaneous) be used to determine the attitude of the spacecraft. Pulsar navigation also be introduced to CNS. Maser is another interested celestial in radio astronomy which has s...

A common way to navigate an information space in the real world is with help of other people, e.g. instead of looking at my map I ask another person for the direction of the place I want to go to. This communication with other agents (human o r artificial) to navigate an information space is what we call social navigation. In this paper social navigation is examined; how does it work; who uses ...

We extend the navigation function methodology, established for single robot navigation, to the case of multiple robots. Appropriate expression of the robot potential functions guarantees global convergence. The derived closed form navigation function provides a robust navigation scheme, suitable for real time implementation. The collision avoidance and global convergence properties are verified...

The current Federal Radio Navigation Plan presents a plan that includes phasing out of existing radio-navigation aids as part of the transition to sole-means-GPS navigation in the United States. GPS based systems are also being envisioned as becoming the primary means of air traffic control resulting in the retirement of older primary and secondary surveillance radar (SSR) systems. This paper d...

This paper proposes a novel methodology for decentralized multi-robot navigation with multiple arbitrarily shaped obstacles in 2-dimensional environments. The proposed methodology is based on the novel concepts of the Navigation Transformation and the Harmonic Function based Navigation Functions. A version of the Navigation Transformation the Multi-Agent Navigation Transformation is proposed in...

Navigation in large-scale natural environments is not new and has been dealt with some success across various cultures and species in the animal kingdom. Currently, interest in navigation and wayfinding has been revived by difficulties users usually experience when navigating through large-scale 3D computer virtual environments (CVEs). In this paper, the facilitation of wayfinding in such envir...

the aim of this paper is to present a strategy describing a hybrid approach for the navigation of a mobile robot in a partially known environment. The main idea is to combine between fuzzy logic approach suitable for the navigation in an unknown environment and spiking neural networks approach for solving the problem of navigation in a known environment. In the literature, many approaches exist...

navigation systems for the visually impaired. Using an Android Smartphone that runs the indoor navigation system – Percept Application with accessibility features, the blind user obtains navigation instructions generated automatically by our navigation generation algorithm to the chosen destination when touching specific landmarks tagged with Near Field Communication tags. This thesis also intr...

We report the design and implement of a land robot whose Tekkotsu/Create system is modified to support GPS-guided navigation and radio-sensing based navigation . The project is a moderate success with both GPS and radio-sensing navigation algorithms achieve similar navigation performance.

The aim of this study is to assess the accuracy and applicability of an advanced cranial navigation setup. Therefore, continuous electromagnetic instrument navigation was employed in 136 neurosurgical cases using a standard navig ation system. A phantom head in an intraoperative MRI environment was used to compare the accuracy of the advanced to the standard navigation setup. No significant dif...