in this paper, we present the results of a hierarchical slam/gps/ins/wlfp sensor fusion to be used in navigation system devices. due to low quality of the inertial sensors, even a short-term gps failure can lower the integrated navigation performance significantly. in addition, in gps denied environments, most navigation systems need a separate assisting resource, in order to increase the avail...

This paper deals with the basic design and implementation of the mathematical motion model of an autonomous unmanned ground vehicle. This model comes from the specific construction of the vehicle, which was designed in order to verify and demonstrate its autonomous motion possibilities indoors and outdoors. This article presents two different issues of the basic model: a) computing vehicle posi...

There is a common misconception in the testing industry that all unmanned autonomous systems can be tested using methodologies developed to test manned systems. A tester can incorrectly state that driving a manned vehicle is conceptually identical to driving an unmanned vehicle; the only difference lies in the position of the operator. In actuality, the main difference lies in the unmanned auto...

A second major effort is currently underway toward the development of vehicles with autonomous capabilities. The Autonomous Land Vehicle and Advanced Ground Vehicle Technology programs highlighted the first efforts in autonomous vehicles. The second push is fueled by the Office of the Secretary of Defense's (OSD) Unmanned Ground Vehicle (UGV) program. The Surrogate Teleoperated Vehicle and Demo...

This thesis presents the system architecture for landing an Unmanned Aerial Vehicle (UAV) from a hovering position without the intervention of a human operator. Through the use of feedback information from a height sensor, the UAV is commanded to perform controlled descent with the desired landing parameters by implementation of the flight control laws. The plant model of the system was determi...

This paper describes a feasibility study that is included with the research, development and testing of a micro communications sonobuoy deployable by Maritime Fixed wing Unmanned Aerial Vehicles (M-UAV) and rotor wing Quad Copters which are both currently being developed by the University of Adelaide. The micro communications sonobuoy is developed to act as a seamless communication relay betwee...

Unmanned ground vehicle is an autonomous vehicle that mainly capable to do tasks independent of humans. Automated vehicle works during off road navigation and mainly used in military operations. The radio environment on electrically small platforms is changing rapidly. In order to support high speed audio and video, processing needs higher data rates concerned with sending and receiving data pa...