| Estimating Moving Targets Behind Reinforced Walls Using Radar |
Nov-2009 |
10 pages |
| Authors:
Arye Nehorai; Marija M Nikolic; Antonije R Djordjevic; WASHINGTON UNIV ST LOUIS MO DEPT OF ELECTRICAL AND SYSTEMS ENGINEERING
|
 | We consider the estimation of moving targets located behind concrete walls reinforced with metallic bars, using radar measurements. The periodic structure of the rebar severely attenuates and distorts transmitted waveforms, which produces defocused images with ghost target estimates. We apply beamforming to estimate permittivity and thickness of the wall and number and position of the targets. The proposed solution is based on accurate physical models calculated using the method of ... |
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| Fight's On! Volume 8, Issue 3 |
Nov-2009 |
5 pages |
| Authors:
Gina Cinardo; AIR FORCE RESEARCH LAB MESA AZ HUMAN EFFECTIVENESS DIRECTORATE
|
| This newsletter contains the following articles: Tactical digital holograms favored over conventional 2D imagery; Gaming and training: Examining the learning potential of games in live, virtual, and constructive operations; 711HPW/RHA begins analysis of Joint Terminal Attack Controller training effectiveness; Experimental Deployable Tactical Training Testbed (X-DTT) goes to Aviano Air Base, Italy, for 18-month field evaluation; Game-based defensive counter space training exemplar transitions to field; and 711HPW/RHA exercise recognized by community ... |
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| Multi-Input Multi-Output (MIMO) Radar - Diversity Means Superiority |
Oct-2009 |
7 pages |
| Authors:
Jian Li; FLORIDA UNIV GAINESVILLE DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| A multiple-input multiple-output (MIMO) radar system, unlike a standard phased-array radar, can transmit via its antennas linearly independent waveforms. We have made significant contributions on exploiting the waveform diversity offered by MIMO radar to achieve superior performance. First, we have considered a MIMO radar system where both the transmitter and receiver have multiple well-separated subarrays with each subarray containing closely-spaced antennas. Because of this general antenna configuration, both the waveform ... |
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| Signal Modeling of Turbulence-Distorted Imagery |
Sep-2009 |
18 pages |
| Authors:
S S Young; Ron Driggers; Keith Krapels; Richard Espinola; Joseph Reynolds; Jae Cha; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| Understanding turbulence effects on wave propagation and imaging systems has been an active research area for more than 50 years. Conventional atmospheric optics methods use statistical models to analyze image degradation effects that are caused by turbulence. In this paper, we intend to understand atmospheric turbulence effects using a deterministic signal processing and imaging theory point of view and modeling. The model simulates the formed imagery by a lens by ... |
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| Mission Connect Mild TBI Translational Research Consortium |
Aug-2009 |
10 pages |
| Authors:
Brent E Masel; TRANSITIONAL LEARNING CENTER AT GALVESTON TX
|
| The purpose of this project is to identify the incidence of post traumatic hypopituitarism (PTH) in mild TBI and develop criteria for assessing which patients with a mild TBI are at risk for developing PTH. This study will also correlate the characteristics of the individuals with PTH by neuropsychological, neurophysiological and imaging testing as they relate to functional outcome. At 6 months post injury, patients will be screened for anterior ... |
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| Three Dimensional Imaging of Helicon Wave Fields Via Magnetic Induction Probes |
13-Jul-2009 |
222 pages |
| Authors:
Michael P Reilly; ENGINEERING RESEARCH AND CONSULTING INC (ERC INC) EDWARDS AFB CA
|
| The majority of data presented in this work is for a helicon plasma discharge driven at 13.56 MHz, 500 Watts input power, 900 Gauss applied magnetic field, 10 mTorr neutral Argon gas, and cylindrical plasma of 5 cm diameter approximately 50 cm long. High frequency magnetic induction probes were developed to measure helicon wave propagation using a new technique for frequency calibration through an impedance analyzer; up to 100 MHz. ... |
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| A Summary of Proceedings for the Advanced Deployable Day/Night Simulation Symposium |
Jul-2009 |
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| Authors:
Keith K Niall; DEFENCE RESEARCH AND DEVELOPMENT TORONTO (CANADA)
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 | The Advanced Deployable Day/Night Simulation (ADDNS) Technology Demonstration Project was initiated to design, develop, and deliver transportable visual simulations that jointly provide night-vision and high-resolution daylight capability. The project includes research and development on deployable display technologies for realistic day and night training operations, extends the knowledge of human factors with night vision devices, and the ability to represent dangerous or extreme scenarios for day and night operations in general. ... |
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| Flow Visualization Studies over a UCAV 1303 Model |
Jun-2009 |
58 pages |
| Authors:
Weng H Chua; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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| This study is a qualitative documentation of the main flow features over an Unmanned Combat Air Vehicle (UCAV) 1303 model by flow visualization techniques where it gives the first understanding of the UCAV maneuverability under steady and unsteady maneuver conditions. The relevant fluid flow physics is not available presently and, hence, this thesis concentrated on generating those critical details. Towards this goal, model studies were conducted on the United States ... |
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| Polarimetric Imaging for the Detection of Disturbed Surfaces |
Jun-2009 |
77 pages |
| Authors:
Michael E Eyler; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This work tested the ability of the fast time-division SALSA polarimetric camera of Bossa Nova Technologies, Ltd. to distinguish disturbed from undisturbed surfaces. Earth and asphalt were imaged, and the data was processed using standard ENVI (trademark) software. The polarization signature of the disturbed earth was not strong, even when processing was employed. The camera was better able to distinguish between the polarization characteristics of patched or disturbed asphalt and ... |
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| Transport Imaging: Developing an Optical Technique to Characterize Bulk Semiconductor Materials for Next Generation Radiation Detectors |
Jun-2009 |
79 pages |
| Authors:
Sarah L Catalano; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Characterization of the mobility-lifetime product is critical to the development of new materials for semiconductor radiation detectors. An optical technique has been developed that allows for the direct determination of the minority carrier diffusion length, drift length, and mobility-lifetime product from a single image of the recombination luminescence in semiconductor materials. Excess carriers are generated using the electron beam in a scanning electron microscope. The charge is then drifted by ... |
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| Visible-to-SWIR Downconversion and Its Application to Individual Identification Friend or Foe (IIFF) |
Jun-2009 |
61 pages |
| Authors:
Scott R Gardner; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The objective of this research was to demonstrate the extension of the current design of the Individual Identification Friend or Foe (IIFF) patch, to provide a response in the shortwave infrared (SWIR) region of the electromagnetic spectrum. The purpose of the IIFF patch is to mitigate fratricide during ground engagements, by emitting a near infrared (NIR) signal, when the wearer is illuminated by a targeting laser attached to the shooter's ... |
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| Wireless Sensor Networks for Detection of IED Emplacement |
Jun-2009 |
40 pages |
| Authors:
Gurminder Singh; Neil C Rowe; Matthew O'Hara; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| We are investigating the use of wireless nonimaging-sensor networks for the difficult problem of detection of suspicious behavior related to IED emplacement. Hardware for surveillance by nonimaging-sensor networks can cheaper than that for visual surveillance, can require much less computational effort by virtue of simpler algorithms, and can avoid problems of occlusion of view that occur with imaging sensors. We report on four parts of our investigation. First, we discuss ... |
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| Development of a Computer-aided Diagnosis System for Early Detection of Masses Using Retrospectively Detected Cancers on Prior Mammograms |
Jun-2009 |
128 pages |
| Authors:
Jun Wei; Wendy M Kohrt; L M Glode; Robert S Schwartz; Daniel W Barry; MICHIGAN UNIV ANN ARBOR
|
| The performance of a CAD system for subtle lesions is generally much lower than their performance for less subtle lesions. The goal of this project is to develop a CAD system using advanced computer vision techniques aiming at improved detection of retrospectively seen cancers on prior mammograms and incorporate the developed CAD system into our current CAD system. During the project years, we have performed the following tasks: (1) collect ... |
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| Volume Control Manifold for Membrane Adaptive Optics |
15-May-2009 |
8 pages |
| Authors:
Dan K Marker; Jim Rotge; Steve Hanes; BOEING LASER TECHNICAL SERVICES (LTS) COLORADO SPRINGS CO
|
| An innovative adaptive optic concept is discussed that provides a dramatically improved dynamic bandwidth over existing approaches. This innovation is associated with membrane adaptive optics such as silicon nitride and polymer based films. This concept utilizes a volume control manifold that is co-located with the electrostatic actuators to dramatically improve total actuator force which in turn improves dynamic bandwidth and stroke. Presented is the result of a laboratory experiment showing ... |
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| System Design, Algorithm Development, and Verification for Optoacoustic Molecular Imaging of Protease Expression in Breast Cancer |
May-2009 |
45 pages |
| Authors:
Dimple Modgil; CHICAGO UNIV IL
|
| Optoacoustic tomography (OAT) is an emerging, hybrid technique that is non-invasive and uses non-ionizing radiation. No one has yet developed a molecular probe for early detection of proteases in breast cancer using OAT. Our group is developing a molecular probe and an optoacoustic imaging system to address this. During the first year of this project, we have implemented the code that simulates the ideal optoacoustic system. We have compared existing ... |
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| Multiadaptive Plan (MAP) IMRT to Accommodate Independent Movement of the Prostate and Pelvic Lymph Nodes |
May-2009 |
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| Authors:
Ping Xia; CALIFORNIA UNIV SAN FRANCISCO
|
| We found that the direct image based and contour based alignment methods are both reliable to detect translational setup errors for patients with prostate cancer. In the longitudinal direction, the measurement uncertainties are slightly increased with the direct image alignment method when compared to the contour alignment method. Since the manual adjustments are necessary with the both alignment methods, the results of this study may subject to inter-observer variations. Further ... |
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| Early Detection of Breast Cancer via Multi-Plane Correlation Breast Imaging |
Apr-2009 |
30 pages |
| Authors:
Ehsan Samei; Amarpreet S Chawla; DUKE UNIV DURHAM NC
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| One major deficiency of standard mammography that limits its accuracy in detecting breast cancer is the camouflaging effect of overlapping structures in the projection images. To minimize this effect, we proposed Multi-plane Correlation Imaging (MCI) technique. In this technique, multiple radiographic images of the breast are obtained from different angles in rapid succession. Angular information is used to identify and positively reinforce the lesion signals between different projections. In this ... |
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| Electronic Imaging and Signal Processing Toward Realistic Night-Vision Simulation |
29-Mar-2009 |
|
| Authors:
Maarten Hogervorst; TNO DEFENCE SECURITY AND SAFETY SOESTERBERG (NETHERLANDS)
|
| A novel color-transformation method converts daytime scenes into night-vision goggle images suitable for realistic nighttime training. To date, nighttime training using flight or driving simulators has been hindered by the lack of typical night-vision goggle (NVG) rendering. NVG performance is often simulated in training vehicles by converting daytime images into black and white, and displaying the resulting scene in green. However, this approach does not consider that NVG images are ... |
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| Hizbullah's Culture Wars -- Understanding Hizbullah through Social Movement Theory and Its Media Usage |
Mar-2009 |
205 pages |
| Authors:
Jacqueline S Kiel; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis uses social movement theory to examine how Hizbullah frames its message to its various target audiences. The growth and influence of different Hizbullah media over the past two decades suggest that Hizbullah has been successful in shaping a popular message, both inside Lebanon and in the larger Arab world. Hizbullah's successful media campaign has paralleled its growth as perhaps the single most important political party in Lebanon today. ... |
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| Investigation of Panchromatic Satellite Imagery Sensor Low Bias in Shadow Method Aerosol Optical Depth Retrieval |
Mar-2009 |
77 pages |
| Authors:
Brian J Rivenbark; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A technique known as the Shadow Method was developed for calculating aerosol optical depths by measuring the radiance difference between shaded and unshaded regions in high-resolution satellite imagery by Vincent (2006). Previous research investigated use of the Shadow Method in regions of dust obscuration using buildings and clouds as shadow generation sources and a variety of background surfaces. A recurring low bias was seen when using the Shadow Method with ... |
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| Utilizing Microelectromechanical Systems (MEMS) Micro-Shutter Designs for Adaptive Coded Aperture Imaging (ACAI) Technologies |
Mar-2009 |
131 pages |
| Authors:
Mary M Ledet; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The Air Force has long relied on surveillance for intelligence and strategic purposes. Most surveillance systems rely on a lensing system to acquire their images, most of which are in either the visible or infrared wavelengths. Because lensing systems can be expensive, obtrusive, or hard to maintain, researchers have designed adaptive coded aperture imaging (ACAI) as a replacement system. Coded aperture imaging(CAI) has been used in both the astronomical and ... |
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| Performance Enhancements of Ranging Radio Aided Navigation |
Mar-2009 |
76 pages |
| Authors:
Patric J Ernsberger; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| To accomplish Navigation in areas denied Global Navigation Satellite System (GNSS), such as around buildings or in steep valleys, alternative methods must be used. Radio ranging systems have been a part of the navigation solution for years. To improve the position estimate it is believed that using vision, consumer grade inertial navigation systems, and any other measurement available can aid the navigation solution. To accomplish this, an extended Kalman filter ... |
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| Spectroscopic Photoacoustic Tomography of Prostate Cancer |
Mar-2009 |
7 pages |
| Authors:
Xueding Wang; MICHIGAN UNIV ANN ARBOR
|
| Major research accomplishment during the first year of this research project includes 1) fabrication of a fast speed noninvasive PAT prostate imaging system by using a stand-alone commercial ultrasound system; 2) testing the performance of this imaging system through the experiments on phantoms and ex vivo canine prostates; and 3) fabrication and optimization of a specially designed PVDF array transducer for high sensitive broad bandwidth detection of photoacoustic signals. |
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| Real-Time Tracking of Implanted Markers During Radiation Treatment by Use of Simultaneous kV and MV Imaging |
Mar-2009 |
70 pages |
| Authors:
Rodney D Wiersma; STANFORD UNIV CA SCHOOL OF MEDICINE
|
| In the presence of organ motion, geometric target uncertainty can hamper the benefits of highly conformal dose techniques such as IMRT. A critical step in dealing with intra-fraction prostate tumor motion is the real-time monitoring of the tumor position. The aim of this investigation is the first time demonstration of a real-time 3D internal fiducial tracking system based on onboard kV diagnostic imaging together with a MV electronic portal-imaging device ... |
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| A Computational Tool for Evaluating THz Imaging Performance in Brownout Conditions at Land Sites Throughout the World |
Mar-2009 |
65 pages |
| Authors:
Seth L Marek; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This study quantifies terahertz (THz) or sub-millimeter imaging performance during simulated rotary-wing brownout or whiteout environments based on geographic location and recent/current atmospheric weather conditions. The atmospheric conditions are defined through the Air Force Institute of Technology Center for Directed Energy (AFIT/CDE) Laser Environmental Effects Definition and Reference or LEEDR model. This model enables the creation of vertical profiles of temperature, pressure, water vapor content, optical turbulence, and atmospheric particulates ... |
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| Inverse Source Problem in Non-homogeneous and Metamaterial Background Media: Antenna Synthesis and Performance Bounds |
28-Feb-2009 |
22 pages |
| Authors:
Edwin A Marengo; Anthony Devaney; NORTHEASTERN UNIV BOSTON MA DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| The central goal of this project was the investigation of the enhancements in antenna performance and in imaging capability by embedding a source or scatterer in a background medium including metamaterials. This effort was motivated mostly by the possibility of embedding antennas in designer background media so as to obtain radiation performance that would not be possible for comparable antennas in free space. This problem was treated in the present ... |
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| Passive Imaging System for Measuring Atmospheric Scattering and CFLOS |
23-Feb-2009 |
5 pages |
| Authors:
Janet E Shields; SCRIPPS INSTITUTION OF OCEANOGRAPHY LA JOLLA CA MARINE PHYSICAL LAB
|
| This quarterly report describes the work done for the Passive Imaging System for Measuring Atmospheric Scattering and CFLOS, under ONR Contract N00014-07-1-1060, between 1 November 2008 and 31 January 2009. |
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| Role of Merlin in the Growth and Transformation of Arachnoidal Cells |
Jan-2009 |
40 pages |
| Authors:
Anita Lal; CALIFORNIA UNIV REGENTS SANTA BARBARA OFFICE OF RESEARCH
|
| This proposal is concerned with the functional role of merlin in arachnoidal and meningioma cells. In year 1, we developed meningioma-specific NF2 model systems. In Year 2, we characterized the phenotypic effects of these model systems. We showed that merlin loss enhances loss of contact inhibition of growth, increases anchorage independent growth and increases S-phase entry. In the final year, we have shown that merlin loss promotes tumor growth in ... |
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| A Content Analysis of Television Ads: Does Current Practice Maximize Cognitive Processing? |
11-Dec-2008 |
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| Authors:
Ky M De Ros; INDIANA UNIV AT BLOOMINGTON
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| Television advertising is a 67 billion dollar a year industry (McCann, 2008). To help evaluate whether or not advertising dollars are earning the best return on investment, it is important to know how effectively television ads capture and maintain audience attention and engage viewers. Television ads use varied designs to meet many goals including capturing attention, creating brand awareness or product knowledge, motivating consumer behavior, and remembering information. According to ... |
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| Neuroergonomics - Analyzing Brain Function to Enhance Human Performance in Complex Systems |
02-Dec-2008 |
38 pages |
| Authors:
Raja Parasuraman; GEORGE MASON UNIV FAIRFAX VA SYSTEMS ARCHITECTURE LAB
|
| Why Neuroergonomics? To design effective human-machine systems, we must (1) Understand mind in relation to work and technology -- ergonomics (2) Mind cannot be understood without studying the brain -- neuroscience (3) Hence study brain and mind in complex work domains -- Neuroergonomics. Neuroergonomics can provide for more effective and natural interaction between humans and technology. Two examples of Neuroergonomics: (1) Neuroimaging and adaptive automation -- Enhancing performance of operators ... |
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| A Study of the Correlation Between Dislocations and Diffusion Length in In(49)Ga(51)P Solar Cells |
Dec-2008 |
111 pages |
| Authors:
Scott E Williams; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| A quantitative, contact-free method for extracting minority carrier diffusion length is used to measure the relatively small variations in diffusion length associated with dislocation bands in mismatched epitaxy in the p-type region of a two dimensional heterostructure of a triple junction (InGaP/GaAs/Ge) solar cell sample. These measurements are taken using the line scan mode of a Scanning Electron Microscope coupled with an optical microscope. This technique allowed the variations in ... |
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| Comparison of NDTI Methodologies to Classify Infrastructure in an Urban Battlespace From Thermal IR Signatures |
Dec-2008 |
9 pages |
| Authors:
Robert Lozar; Michael McInerney; Jonathan Trovillion; ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
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| A major challenge of remote infrastructure classification is to distinguish pavements from roofs. We proposed that, due to their differing thermal masses, these elements will heat and cool differently. Therefore, their thermal infrared (IR) signatures will differ throughout a 24-hour cycle. We propose a method to rapidly identify urban infrastructure that will assist the Future Force in dominating the urban battlespace to the same degree that the current force dominates ... |
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| The Visible Signature Modelling and Evaluation ToolBox |
Dec-2008 |
111 pages |
| Authors:
Joanne B Culpepper; Rodney A J Borg; DEFENSE SCIENCE AND TECHNOLOGY ORGANIZATION VICTORIA (AUSTRALIA) MARITIME PLATFORMS DIV
|
| A new software suite, the Visible Signature ToolBox (VST), has been developed to model and evaluate the visible signatures of maritime platforms. The VST is a collection of commercial, off-the-shelf software and DSTO developed programs and procedures. The software can logically be divided into image generation and probability of detection (POD) modelling codes. CAMOGEN (CAMOuflage GENeration) and CAMEO-SIM (CAMouflage Electro-Optic SIMulation) provide the image generation, whereas ORACLE provides the POD ... |
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| Ultra-wideband Radar for Building Interior Imaging |
Dec-2008 |
9 pages |
| Authors:
Traian Dogaru; Calvin Le; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| This paper presents both numeric simulations and radar measurements related to through the wall imaging technologies. We present synthetic aperture radar (SAR) images obtained by the Army Research Laboratory (ARL) Forward-Looking Radar system during field experiments and compare those with the results of our Xpatch computer models. We also demonstrate a computational approach based on the Finite Difference Time Domain (FDTD) algorithm in order to obtain the SAR images of ... |
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| Development of Indirect View Sensor Systems: Effects of Viewpoint Offset on Human Performance |
Dec-2008 |
8 pages |
| Authors:
Linda Mullins; ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD HUMAN RESEARCH AND ENGINEERING DIRECTORATE
|
| Advances in sensor imaging technologies permit the Soldier to extend mission performance beyond daytime operations and into the night. Visual helmet-mounted displays (HMDs) have increasingly been used to provide supplemental information to the Soldier. When night vision sensors are used to present imagery on an HMD, the relation between the sensor and display results in a viewpoint offset, where the perceived location of objects in the environment is shifted or ... |
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| Detection of Nuclear Weapons and Materials: Science, Technologies, Observations |
06-Nov-2008 |
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| Authors:
Jonathan Medalia; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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| Detection of nuclear weapons and special nuclear material (SNM, certain types of uranium and plutonium) is crucial to thwarting nuclear proliferation and terrorism and to securing weapons and materials worldwide. Congress has funded a portfolio of detection R&D and acquisition programs, and has mandated inspection at foreign ports of all U.S.-bound cargo containers using two types of detection equipment. Nuclear weapons contain SNM, which produces unique or suspect signatures that ... |
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| DEFENSE MANAGEMENT: DOD Can Establish More Guidance for Biometrics Collection and Explore Broader Data Sharing |
01-Oct-2008 |
34 pages |
| Authors:
GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| The events of September 11, 2001, and operations in Afghanistan and Iraq have made it critical for military units to identify individuals they encounter and share this information with other units and federal agencies. Biometrics are unique personal aspects such as fingerprints and iris images used to identify an unfamiliar person. Federal agencies with national security missions, such as the Departments of Homeland Security (DHS) and State (DOS), need access ... |
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| Miniature and Molecularly Specific Optical Screening Technologies for Breast Cancer |
Oct-2008 |
33 pages |
| Authors:
Nirmala Ramanujam; DUKE UNIV DURHAM NC
|
| The goal of this proposal is to harness the power of light to create miniature and molecularly specific optical technologies for breast cancer diagnosis and detection. The miniature technologies will leverage on millimeter scale silicon detectors and LEDs to make compact devices that can be used in a practical clinical setting for breast cancer detection. The features that will be exploited for optical detection/diagnosis of breast cancer will include the ... |
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| Molecular MR Imaging of Protease Activity in Breast Cancer with Activated Contrast Agents |
Oct-2008 |
7 pages |
| Authors:
Dmitri Artemov; Yoshinori Kato; JOHNS HOPKINS UNIV BALTIMORE MD SCHOOL OF MEDICINE
|
| We synthesized and characterized a smart MR contrast agent activated by Cathepsin-D enzyme. The agent was tested in a cell free system and in vitro with immobilized breast cancer cells. We also initiated animal studies however due to the finding that the structure of the probe needs to be optimized we are currently refining the agent for in vivo applications. |
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| Analysis of Space Shuttle Primary Reaction-Control Engine-Exhaust Transients |
Oct-2008 |
11 pages |
| Authors:
Yu-Hui Chiu; Matthew Braunstein; Rainer A Dressler; Benjamin D Hester; Jeremy R Winick; Lawrence S Bernstein; Paul F Sydney; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
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| A series of 22 primary reaction-control-system engine attitude-control firings were observed from the Maui Space Surveillance Site during the space shuttle STS-115 mission. The firings occurred during a pass over Maui on 19 September 2006 during which the orbiter was in sunlight and the observatory was in darkness. The observed attitude maneuvers maintained the orbiter in an orientation in which its long axis was aligned with the line of sight ... |
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| BANGEX 5 Preliminary Report |
15-Sep-2008 |
26 pages |
| Authors:
Peter S Guest; Andreas K Goroch; David G Bieger; Richard J Lind; Kenneth L Davidson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA DEPT OF METEOROLOGY
|
| This report describes preliminary results from the BANGEX 5 field exercise which occurred at the China Lake Test Range JCIF facility 3 - 5 June, 2008. The goal of this research is to improve our forces ability to detect improvised explosive devices (IEDs) from aircraft. Considerable progress has been made toward this goal as a result of this exercise. A variety of sacrifice environmental measurements were performed to characterize the ... |
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| Statistical Modeling of Radiometric Error Propagation in Support of Hyperspectral Imaging Inversion and Optimized Ground Sensor Network Design |
04-Sep-2008 |
326 pages |
| Authors:
Scott Klempner; ROCHESTER INST OF TECH NY
|
| A method is presented that attempts to isolate the relative magnitudes of various error sources present in common algorithms for inverting the effects of atmospheric scattering and absorption on solar irradiance and determine in what ways, if any, operational ground truth measurement systems can be employed to reduce the overall error in retrieved reflectance factor. Error modeling and propagation methodology is developed for each link in the imaging chain, and ... |
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| Experimental Study of Composites and Metal-Wire Joints |
01-Sep-2008 |
51 pages |
| Authors:
William A Schultz; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| In order to join a composite structure to a metallic structure, the metal-wire layers were co-cured with composite layers using the Vacuum Assisted Resin Transfer Molding (VARTM). Then, the interface fracture strength was measured for Mode II fracture for various lay-up and interface conditions. The study includes a metal-wire to composite interface, composite to composite interface, and metal-wire to metal-wire interface. In addition, the lay-up orientations of the metal-wires were ... |
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| Development of a Human Performance Model as a Baseline for Automatic Change Detection Software Capabilities in Mine Warfare |
01-Sep-2008 |
51 pages |
| Authors:
Jason S Barrett; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This study focused on the development of a human performance model as a baseline performance capability for automatic change detection software for use in mine warfare. Through a series of survey images, operator performance was observed under a variety of sonar image conditions, including increasing clutter levels and changes in image altitude and orientation. While a rough model was developed utilizing only the physical attributes of the images, to obtain ... |
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| Video Data Management System Archives and Provides Online Access to NOAA Deep-Sea Corals Digital Video and Image Data |
Sep-2008 |
7 pages |
| Authors:
A Fiolek; D W Collins; NATIONAL OCEANOGRAPHIC DATA CENTER WASHINGTON DC
|
| Since late 2002, the National Oceanic and Atmospheric Administration's (NOAA) Office of Ocean Exploration and Research (OER) has been collaborating with the National Oceanographic Data Center (NODC) and its three divisions, the NOAA Central Library (NCL), the Marine Data Stewardship Division (MDSD), and the National Coastal Data Development Center (NCDDC) to address the requirements for archiving, preserving, managing, and providing online access to digital videos and still images from OER ... |
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| Correlative Feature Analysis for Multimodality Breast CAD |
Sep-2008 |
37 pages |
| Authors:
Yading Yuan; CHICAGO UNIV IL
|
| The purpose of this research is to develop correlative feature analysis methods for integrating image information from multi-modality breast images, taking advantage of the information from different views and/or different modalities, and thus improving the sensitivity and specificity of breast cancer diagnosis. During the second year of the project, we have expanded the multimodality database, which includes full-field digital mammograms, breast ultrasound images and breast MR images. We have further ... |
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| Gold Nanoparticle Contrast Agents in Mammography: A Feasibility Study |
Aug-2008 |
71 pages |
| Authors:
Andrew D A Maidment; PENNSYLVANIA UNIV PHILADELPHIA
|
| The successful translation of molecular imaging to mammography and digital breast tomosynthesis would allow clinical molecular imaging of the breast. This is a potentially more sensitive approach to early breast cancer detection, especially in women at high risk. Bioconjugated gold (Au) nanoparticle (NP) imaging agents, used in conjunction with digital mammography and breast tomosynthesis, should provide improved lesion conspicuity. Au-NP are exceptionally attenuating at mammographic energies; even very low concentrations ... |
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| Ranked-Based Distance Metric Learning: An Application to Image Retrieval |
07-Jul-2008 |
12 pages |
| Authors:
Rong Jin; Anil K Jain; Jung-Eun Lee; MICHIGAN STATE UNIV EAST LANSING CONTRACT AND GRANT ADMINISTRATION
|
| We have designed a prototype Content-based image retrieval (CBIR) system, called Tattoo-ID, for tattoo image matching and retrieval. CBIR systems automatically determine the image content in the form of low-level image features to compute the similarity between two images, rather than relying on human-assigned (external) class labels. We have examined several key design issues related to building a prototype CBIR system for matching and retrieving tattoo images. Tattoos are imprints ... |
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| A Nearby Old Halo White Dwarf Candidate from the Sloan Digital Sky Survey |
Jul-2008 |
8 pages |
| Authors:
Mukremin Kilic; Hugh C Harris; Patrick B Hall; Piotr M Kowalski; Akshay Awal; S K Leggett; Scott F Anderson; Evalyn Gates; NAVAL OBSERVATORY WASHINGTON DC
|
| We report the discovery of a nearby old halo white dwarf (WD) candidate from the Sloan Digital Sky Survey (SDSS). SDSS J110217.48+411315.4 has a proper motion of 1'.75 yr-1 and redder optical colors than all other known featureless (type DC) WDs. We present SDSS imaging and spectroscopy of this object, along with near-infrared photometry obtained at the United Kingdom Infrared Telescope (UKIRT). Fitting its photometry with up-to-date model atmospheres, we ... |
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| A Wide Area Bipolar Cascade Resonant Cavity Light Emitting Diode for a Hybrid Range-Intensity Sensor |
19 JUN 2008 |
195 pages |
| Authors:
Reginald J. Turner; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
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| This dissertation focused on the development of an illuminator for the HRIS. This illuminator enables faster image rendering and reduces the potential of errors in return signal data, that could be generated from extremely rough terrain. Four major achievements resulted from this work, which advance the field of 3-D image acquisition. The first is that the TJ is an effective current spreading layer for LEDs with mesa width up to ... |
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