In this work an automated traffic analysis in aerial image sequences recorded by an unmanned aerial vehicle (UAV) has been developed, which provides the trajectories of the vehicles especially during overtaking. Methods of photogrammetry and image processing are used to detect the vehicles and to determine and track their positions. Camera calibration is necessary in order to transform image co...

Lockheed Martin Advanced Technology Laboratories (ATL), in conjunction with Lockheed Martin Maritime Systems and Sensors and Lockheed Martin Aeronautics Advanced Development Programs, performed a set of experiments in cooperation with the U.S. Navy involving collaborative, unmanned surface, and air vehicle mission execution. Our multi-domain, collaborative research focused on increasing unmanne...

The current trend is toward requiring undersea vehicles, manned and unmanned, remotely operated or autonomous, to perform ever longer, more demanding, and increasingly critical missions. Longer duration Unmanned Underwater Vehicle (UUV) missions will depend on highly reliable control actuation to ensure mission success, survivability of high value payloads, and plausible deniability. This paper...

This paper addresses the stabilization problem for unmanned air vehicles over digital and wireless communication channels with time delay. In particular, the case with band-limited channels is considered. An observer-based state feedback control policy is employed to stabilize the linear control system of unmanned air vehicles. A sufficient condition on the minimum data rate for mean square sta...

In this paper we present an experimental test bed for the development and evaluation of control systems for unmanned helicopters. The test bed consists of a small unmanned helicopter, mounted on a flying stand that permits all possible movements but prevents the helicopter from damaging or crashing. A fuzzy controller is developed in MATLAB and tested in the helicopter using the test bed. The c...

Water covers nearly 70% of the Earth’s surface, and throughout history, oceans, seas, lakes, rivers, etc [...]

This paper will discuss and provide detailed descriptions of unique configurations of small articulated unmanned systems and describe the design of several approaches resulting in substantial increases in autonomous/semi-autonomous mobility and resultant survivability. The greater mobility results from unique chassis configurations which do not require the space claim for human operators. Each ...

This paper investigates propsective architectures for decisionmaking in unmanned aerial systems. When these unmanned vehicles operate in urban environments, there are several sources of uncertainty that affect their behavior, and decisionmaking algorithms need to be robust to account for these different sources of uncertainty. It is important to account for several risk-factors that affect the ...

Robots are becoming increasingly autonomous. Yet, there are no commonly accepted terms and measures of how “autonomous” a robot is. An ad hoc working group has been formed to address these deficiencies, focusing on the unmanned vehicles domain. This group is defining terminology relevant to unmanned systems and is devising metrics for autonomy levels of these systems. Autonomy definitions and m...

The use of unmanned vehicles in Reconnaissance, Surveillance, and Target Acquisition (RSTA) applications has received considerable attention recently. Cooperating land and air vehicles can support multiple sensor modalities providing pervasive and ubiquitous broad area sensor coverage. However coordination of multiple air and land vehicles serving different mission objectives in a dynamic and c...