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Mobile wireless ad hoc network (MANET) becomes increasingly popular in responding to emergency situation. In this paper a possibility to support rescue team in monitoring heavy gas cloud with MANET comprised of mobile sensing devices is investigated. In the view of the current state of research, two methods for controlling mobile sensing devices during MANET self-organization are presented. The first...
Phytoplankton patches in the coastal ocean have important impacts on the patterns of primary productivity, the survival and growth of zooplankton and fish larvae, and the development of harmful algal blooms (HABs). We desire to observe microscopic life in a phytoplankton patch in its natural frame of reference (which is moving with the ocean current), thereby permitting resolution of time-dependent...
CMRE has been evaluating the potential of autonomous networked ASW using underwater vehicles through a program of sonar signal processing, underwater communications, navigation and robotic behavior developments and at-sea decision support tested through an ambitious seagoing experimental program and demonstrated during NATO ASW exercises. In this paper the various scientific aspects of the program...
This paper presents a methodology for reducing error in large rotation using an omnidirectional camera based on bundle adjustment technique. One of the most traditional problems of motion estimation method is accumulative error. The advantage of omnidirectional camera is that allows tracking landmarks in large rotation and long travel. The minimal error is applied on set of sequent images so that...
Monitoring in large scale environments is a typical mission in cooperative robotics. This task requires the exploration of a huge domain by a generally small number of sensor equipped mobile robots. As time restrictions prohibit an exhaustive global search, a sampling strategy is required that allows an efficient spatial mapping of the environment. This paper proposes an adaptive sampling strategy...
This paper presents laser-based pedestrian tracking using multiple vehicles in outdoor environments. Each vehicle locates pedestrians using its own laser scan image by an occupancy-grid-based method, and it tracks the detected pedestrians via Kalman filtering and Global nearest neighbor based data association. In addition, it generates a local map using extended kalman filter-simultaneous localization...
This paper presents laser-based pedestrian tracking with multiple mobile robots in outdoor environments. Each robot finds pedestrians using its own laser scan image by an occupancy-grid-based method, and it tracks the detected pedestrians via Kalman filtering and Global nearest neighbor based data association. In addition, it generates a local map using EKF-SLAM, where cylindrical objects in outdoor...
We consider a single Dubins-like mobile robot traveling with a constant longitudinal speed in a planar region supporting an unknown field distribution. A single sensor provides the distribution value at the current vehicle location. We present a new sliding mode control method for tracking environmental level sets: the controller drives the vehicle to the set where the distribution assumes a pre-specified...
Explosive removing robot is a kind of unmanned equipment to dispose dangerous explosive instead people. It is very important because there are many explosives threaten the security of the world. This paper introduces research work of a heavy explosive removing robot, 450Kg, lift weight is 50Kg. Main technique include: machinery, electronic, sensor, navigation, motor, computer control communication,...
Mobile platforms when negotiating steps and stairs should be able to control theirs posture in order to avoid sudden tilting or falls. In particular, when considering applications for search and rescue operations where users have a very limited time of operation, the motion on stairs should be automated as much as possible. In this way operators can concentrate on their tasks (i.e. search of survivors...
Active flippers for tracked vehicles are very useful to improve traversability on uneven terrain. However it is widely known that control of flippers also increases the work-load for operators, particularly where the vehicle and the operator are far apart. To reduce the work-load, we aim to realize a sensor-based autonomous controller of flippers to enable a dasiasemi-autonomous operationpsila of...
We present a system for monocular simultaneous localization and mapping (mono-SLAM) relying solely on video input. Our algorithm makes it possible to precisely estimate the camera trajectory without relying on any motion model. The estimation is completely incremental: at a given time frame, only the current location is estimated while the previous camera positions are never modified. In particular,...
Active flippers for tracked vehicles are very useful to improve traversability on uneven terrain. However it is widely known that control of flippers also increases the work-load for operators, particularly where the vehicle and the operator are far apart. To reduce the work-load, we aim to realize a sensor-based autonomous controller of flippers to enable a ldquosemi-autonomous operationrdquo of...
The paper proposes a stable tracking fuzzy controller for a mobile robot (MR). Input to the vehicle are the reference position (xr, yr, thetas). The main objective is to propose a control algorithm to guide the robot from an initial position to a predefined target. One of the difficulties of this problem lies in the fact that the velocities posses two degree of freedom (translational (V) and angular...
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