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This paper describes a concerted effort to realize an automated robotic service in exhibition environments, characterized by a dense population of people with dynamic, random movements and a complex structure with large-scale dimensions. We describe the developed robotic service framework built based on robot navigation function. Spatial representation of the environment is described, on which spatial...
This paper presents the navigation technique for service mobile robots in large scale environment using artificial landmark. The robot navigation is comprised of three major components; localization, mapping, and path planning. To implement the stable navigation system of mobile robots, many developers could use the artificial landmark to measure the accurate position of robot in large scale environment...
This paper proposes the artificial landmark map building method using a Grid-based Simultaneous Localization And Mapping (Grid SLAM). The Grid SLAM method is employed to simultaneously localize the position of mapping cart and construct the map of working area. Based on the estimated position of the mapping cart and the grid-based map, the artificial landmarks are localized and their positions are...
This paper proposed an efficient mapping system which has been implemented on a mobile cart equipped with a laser range sensor and dead reckoning sensors. The practical mapping system to generate accurate maps in unknown environments is one of the main requirements for mobile robots. The mapping system is divided into hardware and software parts. The hardware part, mobile cart, consisted of two encoders,...
This paper presents a method to build the large-scale indoor maps by means of extended Kalman filter (EKF) localization which explores the statistical distribution of noise parameters. As typical method in many robot localization applications, EKF localization has shown considerable success history to locate the position of the robot. However, EKF has also lack which can degrade its performance, especially...
Terahertz (THz) radiations, which is the transition radiation generated when a laser-accelerated electron bunch is passing through the plasma-vacuum boundary, is investigated at different conditions for laser-induced plasma. High energy electrons are generated by irradiating an intense laser pulse of 30 fs and 300 mJ on a He gas target. We discussed the relationship between the THz signals, X-ray...
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