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Barbara Fletcher


Click on the titles below to find US government-authored or -collected reports written by Barbara Fletcher

Total Results: 8 Results per page:
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Land, Sea, and Air Unmanned Systems Research and Development at SPAWAR Systems Center Pacific Apr-2009 15 pages
Authors:  Barbara Fletcher; Greg Kogut; Hoa G Nguyen; H R Everett; Rich Arrieta; Robin Laird; John Andrews; Todd Webber; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.The Space and Naval Warfare (SPAWAR) Systems Center Pacific (SSC Pacific) has a long and extensive history in unmanned systems research and development, starting with undersea applications in the 1960s and expanding into ground and air systems in the 1980s. In the ground domain, we are addressing force-protection scenarios using large unmanned ground vehicles (UGVs) and fixed sensors, and simultaneously pursuing tactical and explosive ordnance disposal (EOD) operations with small ...


The Nereus Hybrid Underwater Robotic Vehicle for Global Ocean Science Operations to 11,000m Depth Sep-2008
Authors:  Barbara Fletcher; Sarah E Webster; Stephen C Martin; Louis L Whitcomb; Chris Young; Donald B Peters; Matthew Heintz; James C Kinsey; Daniel Gomez-Ibanez; Robert McCabe; Chris Taylor; Dana R Yoerger; Andrew D Bowen; Glenn McDonald; Jonathan Howland; James Buescher; Michael V Jakuba; WOODS HOLE OCEANOGRAPHIC INSTITUTION MA DEPT OF APPLIED OCEAN PHYSICS AND ENGINEERING
The full text of this report is not available and therefore is not for sale. This information is provided for reference purposes only.This paper reports an overview of the new Nereus hybrid underwater vehicle and summarizes the vehicle's performance during its first sea trials in November 2007. Nereus is a novel operational underwater vehicle designed to perform scientific survey and sampling to the full depth of the ocean of 11,000 meters -- almost twice the depth of any present-day operational vehicle. Nereus operates in two different modes. For broad area survey, the ...


Proof of Concept Demonstration of the Hybrid Remotely Operated Vehicle (HROV) Light Fiber Tether System Sep-2008 7 pages
Authors:  Barbara Fletcher; James Buescher; Dana R Yoerger; Robert McCabe; Chris Young; Louis L Whitcomb; Andrew Bowen; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.The Hybrid Remotely Operated Vehicle (HROV) Nereus, developed by the Woods Hole Oceanographic Institution (WHOI) with the support of the Space and Naval Warfare Systems Center San Diego (SSC San Diego) and the Johns Hopkins University, is intended to provide a new level of access for deep oceanographic research to a maximum depth of 11,000 meters. Nereus operates in two different modes. The vehicle can operate untethered as an autonomous ...


Field Tests of the Hybrid Remotely Operated Vehicle (HROV) Light Fiber Optic Tether Sep-2006 7 pages
Authors:  Robert Elder; Matt Heintz; Dana Yoerger; Andrew Bowen; Louis L Whitcomb; Chris Young; Robert McCabe; Chris Taylor; James Buescher; Barbara Fletcher; Robert Fuhrmann; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.The Hybrid Remotely Operated Vehicle (HROV), being designed and built by Woods Hole Oceanographic Institution (WHOI) with the support of the Space and Naval Warfare Systems Center San Diego (SSC San Diego), will provide a new level of accessibility for deep ocean research. HROV will be primarily an autonomous vehicle but will be reconfigurable to a teleoperated system by the installation of a fiber optic data link and a manipulator ...


Expanding Missions for Small Unmanned Undersea Vehicles (UUVs) JUN 2003 5 pages
Authors:  Barbara Fletcher; Robert L. Wernli; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.Small unmanned undersea vehicles (UUVs), those less than 150 pounds, have many advantages for field operations over the larger models. The increase in number and capabilities of these vehicles is opening doors for an ever expanding number of applications. Current and anticipated mission areas will be discussed, including hydrographic survey, mine countermeasure survey / classify / map, target reacquisition and identification, chemical detection and plume mapping, and harbor security. New ...


U.S. Navy Standards and Interfaces Study: FY 2002 Results 12 FEB 2003 8 pages
Authors:  Barbara Fletcher; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.The US Navy's Unmanned Undersea Vehicle (UUV) Master Plan (April 2000) calls for adopting a more modular design philosophy and the establishment of standards for better integration of future UUV systems. In early 2002, a study team was formed with representatives from 5 Navy laboratories. Existing standards and systems have been examined, as well as soliciting industry input. Six draft standards were generated from this year's effort: 1) UUV Control ...


High Frequency Side Scan Sonar for Target Reacquisition and Identification 2003 7 pages
Authors:  Thomas E. Wilcox; Barbara Fletcher; SPACE AND NAVAL WARFARE SYSTEMS CENTER SAN DIEGO CA
The full text of this report is available for sale.The increasing use of small unmanned underwater vehicles (UUV's) for scientific, military and security applications has led to the development of new sensor technologies. Key among these has been the development of small, light, cost-effective side scan sonar systems, enabling small vehicles such as the REMUS and CETUS II to perform a variety of survey-type missions. New developments in side scan technology are increasing the capabilities of these systems, going ...


Chemical Plume Mapping with the Remus Autonomous Underwater Vehicle Aug-2001 6 pages
Authors:  Barbara Fletcher; SPACE AND NAVAL WARFARE SYSTEMS COMMAND SAN DIEGO CA
The full text of this report is available for sale.A REMUS (Remote Environmental Measuring UnitS) unmanned undersea vehicle (UUV) is being used for chemical plume mapping as part of the Office of Naval Research (ONR) Chemical Sensing in the Marine Environment (CSME) program. Bathymetric, current, temperature and fluorometric data are collected while the vehicle performs a ladder type search across and downstream of a dye source. These data are used to validate and refine an analytical plume model. Operational ...


Total Results: 8 Results per page: