| Collaboration with Oregon State University at Duck, NC |
Jun-2009 |
5 pages |
| Authors:
William J Plant; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
 | A dual-polarized, coherent, X-band microwave radar called RiverRad was deployed at the Coastal Engineering Field Research Facility at Duck, NC in April, 2008. The purpose of the deployment was to utilize this calibrated radar to calibrate a marine radar operated by Oregon State University (OSU) on a long-term basis at Duck and to study microwave backscatter in the surf zone. Data from RiverRad were compared with those from the marine ... |
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| Signal and Image Processing Algorithms for the U.S. Army Research Laboratory Ultra-wideband (UWB) Synchronous Impulse Reconstruction (SIRE) Radar |
Apr-2009 |
68 pages |
| Authors:
Lam Nguyen; ARMY RESEARCH LAB ADELPHI MD
|
| The U.S. Army Research Laboratory (ARL), as part of a mission and customer-funded exploratory program, has developed a new low-frequency, impulse-based, ultra-wideband (UWB) synthetic aperture radar (SAR), which has been used as a test bed to support proof-of-concept demonstration for detecting concealed targets. The radar is intended to collect and process data at combat pace in an affordable, compact, and lightweight package. To achieve this, the radar is based on ... |
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| Modeling and Simulation Architecture for Studying Doppler-Based Radar with Complex Environments |
26-Mar-2009 |
78 pages |
| Authors:
Nicholas J Amato; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| This research effort develops a hybrid large-scale modeling and simulation framework that defines the requirements for a program to evaluate radar-aircraft-turbine-clutter interactions. Wind turbines and other moving structures can interfere with a radar's ability to detect moving aircraft because radar returns from turbines are comparable to those from slow flying aircraft. This interference can lead to aircraft collisions or crashes, reducing the safety for air traffic. Two radar applications, INSSITE ... |
|
| MARSnet: Mission-aware Autonomous Radar Sensor Network for Future Combat Systems |
23-Mar-2009 |
169 pages |
| Authors:
Qilian Liang; TEXAS UNIV AT ARLINGTON DEPT OF ELECTRICAL ENGINEERING
|
| During the period of 7/1/2008 - 12/3 I/2008, we performed the following studies on radar sensor network and other related areas: I. Radar Sensor Network Using A New Triphase Coded Waveform: Theory and Application: 2 Sense-Through-Wall Channel Modeling Using UWB Noise Radar; 3. Orthogonal Pulse Compression Codes for MIMO Radar System; 4 Optimized Punctured ZCZ Sequence-pair Set: Design, Analysis and Application to Radar System; 5. A Triphase Coded Waveform: Design, ... |
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| Radar Observations of Turbulence Using MST and FMCW Radar (BRIEFING CHARTS) |
09-Mar-2009 |
20 pages |
| Authors:
Frank D Eaton; Gregory D Nastrom; NASTROM CONSULTING LLC SAINT CLOUD MN
|
| Radar observation of turbulence using MST and FMCW radar. |
|
| Frequency Diversity for Improving Synthetic Aperture Radar Imaging |
Mar-2009 |
151 pages |
| Authors:
Jawad Farooq; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| In this work, a novel theoretical framework is presented for using recent advances in frequency diversity arrays (FDAs). Unlike a conventional array, the FDA simultaneously transmits a unique frequency from each element in the array. As a result, special time and space properties of the radiation pattern are exploited to improve cross-range resolution. The idealized FDA radiation pattern is compared with and validated against a full-wave electromagnetic solver, and it ... |
|
| Retroreflector for Photonic Doppler Velocimetry |
Mar-2009 |
114 pages |
| Authors:
Thomas J Lagoski; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| In order to meet the goals of the Department of Defense (DoD) for smaller and more accurate weapons, the Munitions Directorate of the Air Force Research Laboratory (AFRL/RW) has numerous projects investigating the miniaturization of weapons and munition fuze components. One of these efforts is to characterize the performance of small detonators. The velocity of the flyer, the key component needed to initiate a detonation sequence, can be measured using ... |
|
| Radar Imaging with a Network of Digital Noise Radar Systems |
Mar-2009 |
168 pages |
| Authors:
Ashley L Schmitt; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Due to the threat of terrorism, today's enemy can be anyone and they can exist anywhere even in populated cities. Monitoring human activities in an urban environment is a difficult problem due walls, clutter, and other obstructions. This thesis discusses the development of a network of digital noise radars that operate simultaneously to track humans and non-human targets inside rooms and through walls. Each individual noise radar works by cross ... |
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| Two Dimensional Scattering Analysis of Data-Linked Support Strings for Bistatic Measurement Systems |
Mar-2009 |
93 pages |
| Authors:
William Keichel; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Use of data-linked strings to support a bistatic antenna is being considered as a possible improvement to indoor bistatic radar cross section measurement systems. Analysis of candidate data-linked strings is required to understand the potential clutter contribution posed by such a system. The main objective of this research is to determine the scattering properties of four data-linked support string samples. Another goal is to determine the material properties of the ... |
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| Image Processing for Multiple-Target Tracking on a Graphics Processing Unit |
Mar-2009 |
79 pages |
| Authors:
Michael A Tanner; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| Multiple-target tracking (MTT) systems have been implemented on many di?erent platforms, however these solutions are often expensive and have long development times. Such MTT implementations require custom hardware yet o?er very little flexibility with ever changing data sets and target tracking requirements. This research explores how to supplement and enhance MTT performance with an existing graphics processing unit (GPU) on a general computing platform. Typical computers are already equipped with ... |
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| Application of Time-Frequency Representations To Non-Stationary Radar Cross Section |
Mar-2009 |
227 pages |
| Authors:
John McShane; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| Radar Cross Section imaging of a non-wide sense stationary signal poses significant problems in identifying scattering centers in the post processed radar-generated image. A non-wide sense stationary RCS is typically encountered when moving parts on the target impress a phase shift into the backscatter signal that is uncorrelated to the previous return pulse. When the Fourier transform of the phase shifted complex signal is taken, range and cross range information ... |
|
| A Measure of Search Efficiency in a Real World Search Task (PREPRINT) |
16-Feb-2009 |
25 pages |
| Authors:
J G Trafton; Melissa R Beck; Maura C Lohrenz; LOUISIANA STATE UNIV BATON ROUGE
|
| In visual search, preattentive processes locate potential target regions and selective attention is directed to potential target locations. The current experiments examined the role of global visual clutter in participants' ability to deploy attention to target regions containing relatively more or less local clutter. Participants searched maps of high, medium, or low global clutter for a target in a high or low local clutter region. Global and local clutter influenced ... |
|
| New Magnetic Materials and Phenomena for Radar and Microwave Signal Processing Devices - Bulk and Thin Film Ferrites and Metallic Films |
15-Feb-2009 |
38 pages |
| Authors:
Carl E Patton; COLORADO STATE UNIV FORT COLLINS DEPT OF PHYSICS
|
| ONR Grant ONR N00014-07-1-0597 has supported a four phase program. Under Phase (1), there were three materials thrusts, (a) hybrid pulse laser deposited and liquid phase epitaxy films of low loss cubic yttrium iron garnet (YIG) and uniaxial barium hexaferrite, (b) bulk and thick film ultra-dense fine grain pol) crystalline YIG materials, and (c) high magnetization metallic films, notably of Permalloy, iron, and FeTiN. Under Phase (2), the focus was ... |
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| Time-Frequency Analysis of a Moving Human Doppler Signature |
Feb-2009 |
34 pages |
| Authors:
Traian Dogaru; Calvin Le; Getachew Kirose; ARMY RESEARCH LAB ADELPHI MD SENSORS AND ELECTRON DEVICES DIRECTORATE
|
| In this report we analyze the Doppler signature of a moving human with the purpose of finding temporal change patterns that would allow detection and classification of movers. The analysis is based on computer models that simulate the operation of a pulse-Doppler radar. We start with an animated human mesh in walking motion and compute the frame-by-frame radar return using electromagnetic solvers such as the Finite Difference Time Domain (FDTD). ... |
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| Covert, Intelligent, and Spectrally-Efficient MIMO-Based Noise Radar Networks |
31-Jan-2009 |
158 pages |
| Authors:
Ram M Narayanan; Wiriyanto Darsono; Kyoung-Deuk Kim; Wei-Jen Chen; Qihe Pan; Shrawan C Surender; PENNSYLVANIA STATE UNIV UNIVERSITY PARK OFFICE OF SPONSORED PROGRAMS
|
| The following tasks were accomplished: (1) Distributed adaptive beamforming using noise waveforms: The use of multiple radars for characterizing the radar cross section (RCS) of the target was investigated, and the RCS enhancement was quantified. A framework for inducing orthogonality in sequences and in polarization was developed to differentiate signals from various transmitters. Generalized Likelihood Ratio Test (GLRT) and Tapped Delay Line (TDL) beamforming were integrated. (2) RF tag approaches: ... |
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| Performance Limits and Design of MIMO for Sensor and Ad Hoc Wireless and Networks |
05-Jan-2009 |
8 pages |
| Authors:
Rick S Blum; LEHIGH UNIV BETHLEHEM PA DEPT OF COMPUTER SCIENCE AND ELECTRICAL ENGINEERING
|
| We have made excellent progress on studying appropriate signal processing and communication strategies for networks of dispersed nodes where each node may be equipped with a sensor. One area of focus has been on developing appropriate signal processing and communication strategies for networks which focus on target detection or hypothesis testing problems. There are many important military and non-military applications of this paradyme. In particular, hypothesis testing, often called signal ... |
|
| A Diagnostic Approach to Weapon System Lifecycle Support: The Phalanx Close-in Weapon System |
Jan-2009 |
17 pages |
| Authors:
Aruna Apte; Rene Rendon; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This study discusses a diagnostic approach to examining the lifecycle support system of a weapon system specifically illustrating the approaches for the US Navy Phalanx Close-in Weapon System (CIWS). The study gauges the status of current readiness and analyzes a snapshot of cost structures. The study identifies the program's influential cost factors and system performance drivers. As a diagnostic approach to the lifecycle support of the Phalanx Weapon System, the ... |
|
| Defense Against Rocket Attacks in the Presence of False Cues |
Dec-2008 |
99 pages |
| Authors:
Lior Harari; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| Rocket attacks on civilian and military targets, from both Hezbollah (South Lebanon) and Hamas (Gaza strip) have been causing a major operational problem for the Israeli Defense Force for over two decades. In recent years, U.S. forces have faced similar attacks in Afghanistan and Iraq against both remote military outposts and in the heart of Baghdad (Green zone). The insurgents are using mortars and short-range rockets, whose launch platforms have ... |
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| Automatic Identification System: AIS-A Reception of AIS-B, 2008 Study |
Dec-2008 |
41 pages |
| Authors:
Sandra Tavener; Tristan Cooper; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) MARITIME OPERATIONS DIV
|
| The use of the Automatic Identification System (AIS) has been mandated for ships over 300 gross tonne since December 2004. Through Border Protection Command, DSTO was tasked to assist the Australian Maritime Safety Authority with the assessment of the performance of AIS and a new variant AIS-B. AIS-B is a cut down version meant for smaller vessels but there have been concerns by the maritime community that AIS-B cannot be ... |
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| High Fidelity Radar Stimulation For Distributed Hardware-in-the-Loop Simulations |
20-Nov-2008 |
15 pages |
| Authors:
James A Jr; Buford; James D Coombs; Anthony P Rainoldi; ARMY AVIATION AND MISSILE RESEARCH DEVELOPMENT ENG CTR REDSTONE ARSENAL AL SYSTEM SIMULATION AND DEVELOPMENT DIRECTORATE
|
| Simulations are critical to the development and testing of the Ballistic Missile Defense System 1) Critical to the development of algorithms such as discrimination. methodologies 2) High fidelity radar stimulation provides a needed capability to assess the readiness and performance of the AN/TPY-2 radar. 3) High fidelity target and environment signature modeling improves. assessment capability 4) Real time execution capability is a key factor. 5) Application of high fidelity stimulation ... |
|
| Understanding the Function of Circular Polarisation Vision in Mantis Shrimps: Building a C-Pol Camera |
24-Oct-2008 |
10 pages |
| Authors:
Justin Marshall; QUEENSLAND UNIV ST LUCIA (AUSTRALIA)
|
| Report coversplans to construct a Mini-DV video camera capable of imaging C-Pol light, put this is an underwater housing and make field observations of both natural objects and man-made targets in the habitat of stomatopods. The camera system is a modified version of one already in use for imaging linear polarised light. Here a LCD switch-plate system, placed in front of the camera and capable of rotating the plane of ... |
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| Multi-Input Multi-Output (MIMO) Radar - Diversity Means Superiority |
15-Oct-2008 |
6 pages |
| Authors:
Jian Li; FLORIDA UNIV GAINESVILLE DEPT OF ELECTRICAL AND COMPUTER ENGINEERING
|
| A multiple-input multiple-output (MIMO) radar uses multiple antennas to simultaneously transmit several linearly independent waveforms. It also uses multiple antennas to receive the reflected signals. It has been shown that by exploiting this waveform diversity, MIMO radar can overcome performance degradations caused by radar cross section (RCS) fluctuations, achieve flexible spatial transmit beampattern designs, provide high-resolution spatial spectral estimates, and significantly improve the parameter identifiability. The MIMO radar can be ... |
|
| Claudia User Manual |
Oct-2008 |
41 pages |
| Authors:
Ross Kyprianou; Daniel Finch; Nick Lioutas; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) ELECTRONIC WARFARE AND RADAR DIVISION
|
| This document is the user manual for version 1.0 of the generic maritime radar performance model Claudia'. Claudia computes the target detection performance of radars in maritime environments. |
|
| Assessing Accuracy in Varying LIDAR Data Point Densities in Digital Elevation Maps |
01-Sep-2008 |
99 pages |
| Authors:
Brian C Anderson; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis discusses the production of Digital Elevation Maps (DEM) using varying density of data points from a Lidar (Laser or Light Detection And Ranging) collection. Additionally, this thesis contains information on the multiple space missions that use laser altimetry or Lidar to gather data about planet earth, the moon, asteroids, Mars and Mercury. The thesis covers the accuracy of different amounts of data used when generating a DEM in ... |
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| Validation of High Frequency Radar Used in Ocean Surface Current Mapping via in-situ Drifting Buoys |
01-Sep-2008 |
110 pages |
| Authors:
George Wright; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| High frequency (HF) radar and its application to mapping ocean surface currents is a relatively new field of study in oceanography. Nevertheless, this scientific field produces real, tangible, accurate real-time results readily available to the military operational planner. The information gained through this process aids in the planning and execution of littoral operations via the development of the battle-space environment. Additionally, commercial use of this information can aide in the ... |
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| The Holistic Targeting (HOT) Methodology as the Means to Improve Information Operations (IO) Target Development and Prioritization |
01-Sep-2008 |
107 pages |
| Authors:
Christopher S Ieva; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Joint Publication 3-13 Information Operations (IO) states that both IO planning and targeting should be fully integrated with all joint planning and targeting efforts. However, this thesis research with IO Subject Matter Expertise (SME) on IO targeting and practice suggests the existence of a fracture in the integration process. The most challenging doctrinal, technical, and practical integration challenge stems from the second phase of the Joint Targeting Cycle: Target ... |
|
| Development of a Distributed Digital Array Radar (DDAR) |
01-Sep-2008 |
180 pages |
| Authors:
Pontus Djerf; Ioannis Tornazakis; NAVAL POSTGRADUATE SCHOOL MONTEREY CA GRADUATE SCHOOL OF BUSINESS AND PUBLIC POLICY
|
| Distributed digital arrays have many potential applications in radar and communication systems. The objective of this thesis is to re-examine previous research on distributed digital array radar (DDAR) and evaluate several critical aspects of a proposed wireless architecture. Self-standing transmit/receive (T/R) modules are synchronized wirelessly. An important issue addressed in this thesis is whether a simple low-cost synchronization circuit would perform adequately. To this end two breadboard T/R modules were ... |
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| Enhanced Detection of Orthogonal Radar Waveforms Using Time-Frequency and Bi-Frequency Signal Processing Techniques |
01-Sep-2008 |
135 pages |
| Authors:
Patrick B Kistner; David M Crescitelli; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| This thesis investigates the periodic autocorrelation function (PACF) and periodic ambiguity function (PAF) for orthogonal continuous waveform (CW) modulations used in netted low probability of intercept (LPI) radar. Three orthogonal polyphase sequences and one frequency coding sequence are examined and their PACF and PAF characteristics are quantified. The Wigner-Ville distribution (WVD) and quadrature mirror filter bank (QMFB) time-frequency signal processing techniques and the cyclostationary bi-frequency technique (often used in non-cooperative ... |
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| MIMO Radar: A Multi-Sensor Spatially Diverse Radar Architecture |
28-Aug-2008 |
48 pages |
| Authors:
Alexander M Haimovich; NEW JERSEY INST OF TECH NEWARK
|
| The research supported by this grant: (a) provides an in depth analysis of the localization accuracy gain attainable with the MIMO radar systems by means of the Cramer-Rao Lower bound (b) introduces the geometric dilution of precision (GDOP) metric and the contour mapping, providing an insight into the relative performance accuracy for a given layout of radars over a given geographic area. These plots offer a clear understanding of the ... |
|
| Estimation of a Constant False Alarm Rate Processing Loss for a High-Resolution Maritime Radar System |
Aug-2008 |
85 pages |
| Authors:
Irina Antipov; John Baldwinson; DEFENCE SCIENCE AND TECHNOLOGY ORGANISATION EDINBURGH (AUSTRALIA) ELECTRONIC WARFARE AND RADAR DIVISION
|
| This report addresses a problem of estimation of a constant false alarm rate (CFAR) processing loss for a high-resolution maritime radar system on an example of a generic radar system Anti-Submarine Warfare mode and discusses approaches to modelling of the detection performance for such a system. It has been shown that the value of the CFAR loss for a high-resolution radar system can vary considerably over a radar detection range, ... |
|
| 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
|
| 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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| Defense Acquisition: Use of Lead System Integrators (LSIs) - Background, Oversight Issues, and Options for Congress |
06 JUN 2008 |
|
| Authors:
Valerie B. Grasso; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
 | Some in Congress have expressed concern about the government's use of private-sector lead system integrators (LSIs) for executing large, complex, defense-related acquisition programs. LSIs are large, prime contractors hired to manage such programs. Supporters of the LSI concept argue that it is needed to execute such complex acquisition efforts, and can promote better technical oversight and innovation. Two LSI- managed programs the U.S. Army's Future Combat System (FCS) and the ... |
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| Navy DDG-1000 Destroyer Program: Background, Oversight Issues, and Options for Congress |
05 JUN 2008 |
|
| Authors:
Ronald O'Rourke; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The Navy is procuring a new kind of destroyer called the DDG-1000. The ship was earlier called the DD(X). Navy plans call for procuring a total of seven DDG-1000s. The first two were procured in FY2007 using split funding in FY2007 and FY2008. The Navy estimates their combined procurement cost at $6,325 million. This figure includes about $1.9 billion in detailed design/non-recurring engineering (DD/NRE) costs for the entire DDG-1000 class. ... |
|
| Implementing an Intrusion Detection System in the Mysea Architecture |
01-Jun-2008 |
169 pages |
| Authors:
Thomas Tenhunen; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The Monterey Security Architecture (MYSEA) supports a multilevel secure (MLS) network and a number of single level networks at different classification levels. The MYSEA MLS server is the focus of policy enforcement. It implements a Dynamic Security Services mechanism (DSS) that can modulate IPsec security attributes and MYSEA security services based upon administrator choices. Use of intrusion detection technology on the unprotected single level networks can provide administrators with actionable ... |
|
| Optimal Employment of Port Radar and Picket Ships to Detect Attacker Speedboats - A Defender-Attacker Optimization Model to Enhance Maritime Domain Awareness |
01-Jun-2008 |
85 pages |
| Authors:
Ahmad M Abdul-Ghaffar; NAVAL POSTGRADUATE SCHOOL MONTEREY CA
|
| The U.S. Coast Guard has deployed several hundred port patrol vessels to protect U.S. Navy ships and other high-value assets in ports world-wide. Each vessel has an armed crew of four, is relatively fast, and features a simple surface search radar, radios, and a machine gun. These vessels coordinate surveillance patrols in groups of two or four, perhaps working with shorebased radar. We seek to advantageously position these vessels, and ... |
|
| Post-Correlation Semi-Coherent Integration for High-Dynamic and Weak GPS Signal Acquisition (Preprint) |
01-Jun-2008 |
12 pages |
| Authors:
Erik Blasch; Thao Nguyen; Mikel Miller; Chun Yang; SIGTEM TECHNOLOGIES INC SAN MATEO CA
|
| A new approach to weak GPS signal acquisition is presented in this paper. It belongs to the category of approaches that aim at enhancing the sensitivity of standalone GPS receivers without network assistance, which is also called unaided GPS receivers. Acquisition and ultimate tracking of a weak GPS signal (e.g., in an in-door environment) faces several technical challenges, notably, possible data bit sign reversal every 20 ms and tolerable frequency ... |
|
| Creep-Rupture and Fatigue Behavior of a Notched Oxide/Oxide Ceramic Matrix Composite at Elevated Temperature |
JUN 2008 |
116 pages |
| Authors:
Barth H. Boyer; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH GRADUATE SCHOOL OF ENGINEERING AND MANAGEMENT
|
| The inherent resistance to oxidation of oxide/oxide ceramic matrix composites makes them ideal for aerospace applications that require high temperature and long life under corrosive environments. The ceramic matrix composite (CMC) of interest in the study is the Nextel (tm) 720/Alumina (N720/A) which is comprised of an 8-harness satin weave of Nextel (tm) fibers embedded in an alumina matrix. One of the top applications for N720/A is in the combustion ... |
|
| Operation of a Low-Voltage High-Transconductance Field Emitter Array TWT |
JUN 2008 |
38 pages |
| Authors:
D. R. Whaley; R. Duggal; C. M. Armstrong; C. L. Bellew; C. E. Holland; C. A. Spindt; L-3 COMMUNICATIONS CORP SAN CARLOS CA ELECTRON DEVICES DIV
|
| Implementation of "cold cathodes" as an electron source for RF vacuum devices can have a significant impact on many aspects of device operation. Cold Cathode Impact on RF Device Operation: No cathode wearout mechanism * Room temperature operation * Eliminate heater power * High current density operation * Instant turn-on * Eliminate HV modulator * Multi-mode operation * Infinite ON/OFF isolation * Device miniaturization * Increased interaction efficiency * Improved ... |
|
| Second FY2008 Supplemental Appropriations for Military Operations, International Affairs, and Other Purposes |
30 MAY 2008 |
|
| Authors:
Stephen Daggett; Susan B. Epstein; Rhoda Margesson; Curt Tarnoff; Pat Towell; Catherine Dale; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| On Thursday, May 22, 2008, the Senate approved an amended version of H.R. 2642, a bill providing $212.2 billion in supplemental appropriations for FY2008 and FY2009. The measure includes $169.1 billion for military operations in Iraq, Afghanistan and elsewhere, $9.9 billion for international affairs programs, and $33.1 billion for domestic programs, of which $15.6 billion is for extended unemployment compensation. The bill also expands veterans' educational benefits at an estimated ... |
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| Analysis of TODWL PBL Wind Profiles Over Monterey Bay: Towards Ground Truth Winds for WindSAT and Other Remote Sensors |
29 MAY 2008 |
17 pages |
| Authors:
Ralph C. Foster; Robert A. Brown; WASHINGTON UNIV SEATTLE APPLIED PHYSICS LAB
|
| Under this project we analyzed data from the TOWDL (Test of Wind Doppler Lidar) data acquired from February-March, 2002 and February, 2003 over and near Monterey Bay, CA to characterize the coherent structures and to compare them to our simple models of PBL roll vortices. This information is crucial for developing Cal/Val strategies and will help advance our fundamental understanding of the planetary boundary layer (PBL). A good model of ... |
|
| Ultra-Fast Image Sensor Using Ge on Insulator MIS/Schottky Detectors |
28 MAY 2008 |
26 pages |
| Authors:
Chee-Wee Liu; NATIONAL TAIWAN UNIV TAIPEI DEPT OF ELECTRICAL ENGINEERING
|
| The Ge-on-insulator has been fabricated by wafer bonding and smart-cut. The MIS structure leads to simple fabrication process as compared to the conventional PIN structure. Due to the small band gap of Ge, 1.3 microns and 1.55 microns infrared beside 850 nm can be detected. The low parasitics of GOI structure also increase the detection speed. The large work function metal (Pt) is used for the gate electrode to reduce ... |
|
| Review of the President's Fiscal Year 2009 Budget Request for the Defense Health Program's Private Sector Care Budget Activity Group |
28 MAY 2008 |
|
| Authors:
Denise M. Fantone; Sharon Pickup; GOVERNMENT ACCOUNTABILITY OFFICE WASHINGTON DC
|
| The Conference Report accompanying the Fiscal Year 2008 Department of Defense Appropriations bill directed us to review the President's fiscal year 2009 budget request for the Defense Health Program's Private Sector Care BAG. To do this, we reviewed (1) DOD's justification for the request for the Private Sector Care BAG, including the underlying estimates and the extent to which DOD considered historical information; and (2) changes between this request and ... |
|
| Iran: U.S. Concerns and Policy Responses |
28 MAY 2008 |
|
| Authors:
Kenneth Katzman; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The Bush Administration characterizes Iran as a "profound threat to U.S. national security interests." The Administration perception is generated primarily by Iran's nuclear program but is increasingly focused on Iran's military assistance to armed groups in Iraq, which is resulting in U.S. battlefield losses. Iranian aid to the Palestinian group Hamas and Lebanese Hezbollah is also considered a key threat to U.S. interests. The threat assessment of some other governments ... |
|
| Demonstration Project Relating to Stress Analysis of SWAGE-Autofrettaged and Re-Autofrettaged Gun Tubes |
23 MAY 2008 |
|
| Authors:
Anthony P. Parker; PARKER (ANTHONY P) EAST SUSSEX (ENGLAND)
|
| The principal investigator (APP), worked for a total of two weeks at Benet Research Laboratory, Watervliet, NY, using results from a dummy swage autofrettage FEA stress analysis in a non-linear stress analysis of the post heat treatment hydraulic re-autofrettage of a swaged tube. APP collaborated with Benet staff in: (a) Predicting permanent OD strains for a re-autofrettaged gun tube manufactured from HB7 steel. and (b) Devising material modeling procedures for ... |
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| Sea-Based Ballistic Missile Defense - Background and Issues for Congress |
23 MAY 2008 |
|
| Authors:
Ronald O'Rourke; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| As part of its effort to develop a global ballistic missile defense (BMD) system, the Department of Defense (DOD) is modifying 18 Navy cruisers and destroyers for BMD operations, and has deployed a large BMD radar - the Sea-Based X-Band Radar (SBX) - on a modified floating oil platform. The eventual role for sea-based systems in the world-wide U.S. BMD architecture has not been determined. The overall issue for Congress ... |
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| The America COMPETES Act and the FY2009 Budget |
22 MAY 2008 |
|
| Authors:
Deborah D. Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
|
| The America COMPETES Act (P.L. 110-69) responds to concerns that the United States may not be able to compete economically with other nations in the future due to insufficient investment today in science and technology research and in science, technology, engineering, and mathematics (STEM) education. A similar concern led President Bush to announce the American Competitiveness Initiative (ACI) in January 2006. In March 2008, both the House and Senate included ... |
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| Navy Nuclear-Powered Surface Ships: Background, Issues, and Options for Congress |
22 MAY 2008 |
|
| Authors:
Ronald O'Rourke; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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| Some Members of Congress, particularly on the House Armed Services Committee, have expressed interest in expanding the use of nuclear power to a wider array of Navy surface ships, starting with the Navy's planned CG(X) cruiser, the first of which the Navy wants to procure in FY2011. Section 1012 of the FY2008 Defense Authorization Act makes it U.S. policy to construct the major combatant ships of the Navy, including the ... |
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| Defense Contracting in Iraq: Issues and Options for Congress |
21 MAY 2008 |
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| Authors:
Valerie B. Grasso; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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| This report examines logistical support contracts for troop support services in Iraq primary administered through the U.S. Army's Logistics Civil Augmentation Program (LOGCAP). LOGCAP is an initiative designed to manage the use of civilian contractors that perform services during times of war and other military mobilizations. It provides for the awarding of contingency, or bridging contracts, as well as the inclusion of contingency clauses in peacetime contracts. |
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| An Analog-to-Information Approach Using Adaptive Compressive Sampling and Nonlinear Affine Transformations. Analog-to-Information GMR-UW Collaboration |
20 MAY 2008 |
23 pages |
| Authors:
Gil M. Raz; Robert D. Nowak; GMR RESEARCH AND TECHNOLOGY INC CONCORD MA
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| The collaborative effort between GMR Research & Technology and the University of Wisconsin - Madison aimed at finding novel approaches in reduced rate representation and sampling. The effort concentrated on exploring data-adaptive techniques and non-adaptive structured sensing, as well as comparing randomized projection based approaches to nonlinear affine (NoLAff) approaches. The approaches explored in this work share a common theme of improving upon purely random encoding. Adaptive sampling utilizes partial ... |
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| Advanced Research Projects Agency - Energy (ARPA-E): Background, Status, and Selected Issues for Congress |
20 MAY 2008 |
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| Authors:
Deborah D. Stine; LIBRARY OF CONGRESS WASHINGTON DC CONGRESSIONAL RESEARCH SERVICE
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| In August 2007, Congress authorized the establishment of the Advanced Research Projects Agency - Energy (ARPA-E) within the Department of Energy (DOE) as part of the America COMPETES Act (P.L. 110-69) Modeled on the Defense Advanced Research Projects Agency (DARPA), ARPA-E would support transformational energy technology research projects with the goal of enhancing the nation's economic and energy security. |
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