WorldCat Identities

AIR FORCE RESEARCH LAB ROME NY

Overview
Works: 29 works in 33 publications in 1 language and 33 library holdings
Classifications: QA76.9.D343,
Publication Timeline
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Most widely held works by AIR FORCE RESEARCH LAB ROME NY
Smart pixels for optical processing and communications : design, models, fabrication and test by Michael A Parker( Book )

2 editions published in 1998 in English and held by 1 WorldCat member library worldwide

The smart pixel is an optoelectronic device that functions both as an optical interconnect and as a logic element (analog or digital). Elementary issues in the design, modeling, fabrication and testing of smart pixels are examined. In particular, the report investigates the monolithic integration of field effect transistors with lasers, optical quenched lasers, vertical cavity lasers, edge emitting lasers with intracavity modulators. The report starts with self electrooptic effect devices since they are one of the first smart pixels. Details are included on fabrication and on the use of an in-situ reflectometer for wet and dry etching. The report also covers the basic software for the design and test of laser heterostructure and DBR mirror stacks
An Embedded Fusion Processor( Book )

1 edition published in 2000 in English and held by 1 WorldCat member library worldwide

This paper describes an embedded High Performance Computer (HPC) designed to perform the sensor data fusion for the Discriminating Interceptor Technology Program (DITP). The HPC's electrical and physical architecture will be reviewed, The processor's architecture, FPASP5, evolved from years of Ballistic Missile Defense Organization (BMDO), and US Air Force research into wafer scale packaging and power efficient programmable signal processors for space-based applications. The processors, memory, and interface bare chips are packaged in Multichip Modules (MCMs). Our current version is designated MCM3. These MCMs can be stacked in thin layers before being inserted into the chassis level interconnect scheme The chassis interconnect leverages a BMDO and Air Force Research Laboratory (AFRL) funded technology called Highly Integrated Packaging and Processing (HIPP). HIPP allows MCMs and two by two inch Printed Circuit Boards (PCBs) to be stacked together and interconnected with printed flexible flaps and a micro backplane. The combination of these techniques allows us to meet the strict constraints of space based surveillance and interceptor applications
Quantum Computing by Steven P Hotaling( Book )

2 editions published in 1998 in English and held by 1 WorldCat member library worldwide

This report presents the derivation of quantum mechanical Hamiltonians and quantum logics as applied to the concept of quantum computation. The Hamiltonians and quantum logics derived herein are potentially realizable in spin-bearing solid state crystals or trapped ionic species. The study of quantum mechanical analogues to conventional digital computers is in its infancy and there is still much speculation regarding the eventual successful building of a quantum computer
Optical Neural Network Classifier Architectures( Book )

2 editions published in 1998 in English and held by 1 WorldCat member library worldwide

We present an adaptive opto-electronic neural network hardware architecture capable of exploiting parallel optics to realize real-time processing and classification of high-dimensional data for Air Force Hostile Target Identification (HTI). This architecture utilizes a grayscale-input radial basis function neural network based on a previously demonstrated binary-input version. The greyscale-input capability broadens the range of applications for the classifier by allowing it to handle 8 bit input data. We characterized a key component of this system, a variable phase retarder, and found that the phase uniformity changed less than 7% with applied voltage. An optical wavelet transform preprocessor is also discussed. The preprocessor produces a reduced feature set of multiwavelet images to improve training times and discrimination capability of the neural network. The design uses a joint transform correlator (JTC) to provide cross correlations of multiple input images. We present experimental results for a JTC which used four input images generated with a spatial light modulator. We then propose using wavelet functions as input images to perform a multiwavelet feature extraction. The results from the retarder characterization and optical wavelet transform work were to be used in a software simulation of the neural network system to determine its feasibility. However, this work remains unfinished as this project was canceled due to budget cuts
Fiber Optic Bragg Gratings( Book )

2 editions published in 1998 in English and held by 1 WorldCat member library worldwide

Coupled mode theory was used to model reflection fiber gratings. The effects of experimental parameters on grating characteristics were modeled for both uniform and non-uniform grating profiles using this approach. Fabrication of gratings in standard communication single mode fiber required an enhancement of the fiber's photosensitivity by way of high-pressure hydrogen treatment. The theory behind this technique as well as the experimental system used to treat the fibers was discussed. Once treated, the fibers were fabricated using a holographic approach. The performance of gratings fabricated by this method was then compared to theoretical predictions and was found to be in good agreement. Fiber grating shows great potential for use in RF photonic systems. Other in-house efforts are currently examining the use of fiber gratings in phased array radar beam steering systems
Coalition Application of the Joint Battlespace Infosphere (JBI)( Book )

1 edition published in 2002 in English and held by 1 WorldCat member library worldwide

This paper considers the current state of commercial publish/subscribe technology and its relevance and limitations for coalition military deployment. Specifically we will address how information is represented filtered and controlled. Finally we will describe the Joint Battlespace Infosphere, a US Air Force Research Laboratory project that seeks to harness the power of publish/subscribe architectures in a military context
Ranking Activities Based on Their Impact and Threat( )

1 edition published in 2009 in English and held by 0 WorldCat member libraries worldwide

Many say we live in the information age, but in reality if you ask any analyst today they would say we live in the data age. The amount of data being presented and displayed to the analyst is overwhelming - to a point that in many cases they are missing the salient of key activities of interest. Analysts are spending the majority of their time filtering through the data rather than performing analysis. Until recently, in the past five years, has there been an increased emphasis in higher level fusion or what many are calling situation awareness. So why the increased interest? In this paper we will look at this very issue, review our reference model and provide a discussion of a flow through the model to include how we can rank various activities based on their impact and threat
Using Agents to Exploit Heterogeneous Parallelism on High Performance Computers( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

While homogeneous parallelism has traditionally been exploited on scaleable high performance computers (HPCs) for applications such as signal processing, parallelism in requiring data dependent processing applications is often difficult to predict and exploit with traditional methods. This paper describes the adaptation of 'agent-based' systems that have been investigated in other domains such as the Internet. An agent is a autonomous process that adapts to its environment to accomplish a specific task. An agent first discovers the location of needed information, and then either sends the data to a central location or spawns processes to process the information in place. A process is spawned by encapsulating its executable code and state information (including how and where to send the results) into a package sent to the host compute node. The process is then scheduled and executed according to its priority
Semantic Interoperability in Distributed Planning. Track 1: C2 Concepts, Theory, and Policy( )

1 edition published in 2008 in English and held by 0 WorldCat member libraries worldwide

The USAF Command and Control (C2) is undergoing a transformation from a co-located, theater-centric process to one that is worldwide and distributed. A key challenge for this transformation to Globally-Linked Air and Space Operations Centers is developing the ability to collaboratively plan and execute operation with multiple cooperating command centers. This paper describes an in-house program underway at the USAF Research Laboratory Information Directorate that is developing technologies to support the concepts of Network Centric Operations. In particular, research is presented that extends the Object Model Working Group's Core Plan Representation (CPR) framework utilizing semantic technologies to capture planning experiences in both human and machine-readable form. A key feature of these extensions is common, interoperable plan representation amongst the distributed heterogeneous planning agents. Semantic interoperability of the plan representation is critical to support distributed planning. The initial approach to achieving interoperability is a limited taxonomy for describing key plan-related information. The research presented utilizes open standards semantic technology to encapsulate plans as self-describing semantic objects
Introduction to Quantum Information/Computing( )

1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

Quantum Information Technology (QIT) is a relatively new area of research whose purpose is to take advantage of the quantum nature of matter and energy to design and build quantum computers which have the potential of improved performance over classical approaches. This report is designed to give the individual, who has little or no knowledge of QIT, an overview of the area by presenting the various disciplines involved in the development. The material is presented in such a way as to familiarize the reader, with a science and engineering background, with the concepts involved to a sufficient depth to provide an overall understanding. This report, in no way, covers all that is happening in this field of research. The information in this report has been extracted from a variety of sources that are enumerated in the List of References. The subject matter includes an introduction to quantum mechanics and associated mathematics, examples of simple quantum systems, information theory, and examples of some quantum algorithms and simple physical implementation of quantum systems for application to QIT
Determining Course of Action Alignment with Operational Objectives( )

1 edition published in 2006 in English and held by 0 WorldCat member libraries worldwide

During the military planning process, commander's intent and objectives are defined and courses of action (COAs) are developed, analyzed and compared to determine their likelihood of achieving the intent and objectives. For each mission, thousands of COAs could be automatically generated but only those in alignment with commander s objectives are worth investigating. The challenge is to be able to automatically determine alignment, given that there is a semantic gap for a specific pair of objective and COA. The two not only differ syntactically, but also semantically. In this research, we made two specific contributions towards developing a solution to this problem. First, we discovered that classic symbolic reasoning does not work in developing such a solution, as the semantics involved are always fuzzy and inexact. Second, under the assumptions that both the operational objective and the COAs are represented in a low level semantic hierarchy (such that there is a syntax to represent them in terms of languages), we developed a solution that identifies their alignment as well as divergence. This paper presents results of this research, along with results from testing the proposed solution on a small, handcrafted ontology
AFRL Defensive IO Programs( )

1 edition published in 2002 in English and held by 0 WorldCat member libraries worldwide

The definition of information assurance is information operations that defend the global information enterprise through employment of Protect, Detect, Assess and Respond capabilities. This is accomplished by ensuring availability, integrity, authentication, confidentially, and non-repudiation (based on DODD S-3600.1 & AFDD 2-5)
Optical Interconnects for High Speed Computing( )

1 edition published in 1999 in English and held by 0 WorldCat member libraries worldwide

A novel optical interconnect scheme for multichip module-to-multichip module interconnects has been developed which overcomes the traditional limitations of this technology, alignment complexity and implementation cost. Densely pached optical channels are guided by fiber optic plate material embedded into the modules. System alignment is simplified by alleviating the need to align a complex optical system, and by facilitating the alignment of one multichip module with another. No expensive micro lens (diffractive, refractive or holographic) technology is required. This technology will greatly increase the number and speed of data interconnects between multichip modules while reducing the space requirements for the interconnect system. These advances can provide faster computer systems in smaller packages, ideal advantages for aircraft, satellite, missile and unmanned aerial vehicle (UAV) platforms
Effect of Electrode Loss on the Dynamic Range of Linearized Directional Coupler Modulators( )

1 edition published in 2006 in English and held by 0 WorldCat member libraries worldwide

Numerical simulations were used to study the effect of electrode loss on the two-tone spur-free dynamic range (SFDR) of analog photonic links with linearized directional coupler modulators. Radio-frequency loss in the traveling wave electrode significantly limits the frequency bandwidth over which this class of electrooptic modulator can effectively enhance the SFDR
Science and technology text mining basic concepts by Paul Losiewicz( )

1 edition published in 2003 in English and held by 0 WorldCat member libraries worldwide

This literature review presents a broad array of techniques that are becoming available to mine textual data. The review initially presents a three-function (i.e., data collection, data warehousing, and data exploitation) text mining architecture consisting of a six-step text mining process (i.e., source selection, text retrieval, information extraction, data storage, data mining, and presentation). It then presents some of the most widely used data and text mining techniques, including clustering and classification methods, such as nearest neighbor, relational learning models, and genetic algorithms, and dependency models, including graph-theoretic link analysis, linear regression, decision trees, nonlinear regression, and neural networks. The review illustrates some of their potential by describing the Office of Naval Research (ONR) text mining pilot program. In the first year of that program, existing metadata from commercial bibliographic databases were used. There is presently an unacceptably long delay between the development of key component technologies for textual data mining and the deployment of the integrated tools that S & T sponsors need. The first year of the ONR text mining pilot program represents an initial attempt to bridge that gap. Important lessons have been learned about the use of text mining for the management of science and technology research, but much remains to be done. (37 refs.)
Distributed RF Tomography for Tunnel Detection: Suitable Inversion Schemes( )

1 edition published in 2009 in English and held by 0 WorldCat member libraries worldwide

Distributed Radio Frequency (RF) Tomography is a novel approach for detecting underground tunnels and caves over relatively wide areas. This method requires a set of affordable transmitters and receivers randomly deployed above the ground. Using the principles of inverse scattering, it is possible to develop a simplified theory for imaging below ground, thus revealing and locating voids. In this paper, we introduce inversion schemes suited for ground penetrating radar tomography applied to sensors that are randomly distributed over the area of interest
A Cyber Physical Systems Perspective on the Real-time and Reliable Dissemination of Information in Intelligent Transportation Systems( )

1 edition published in 2010 in English and held by 0 WorldCat member libraries worldwide

Timely and reliable dissemination of traffic-related information to drivers is a key property that intelligent transportation systems (ITS) should support. Numerous impediments stemming due to (a) physical factors, such as mobility and speed of vehicles, density of vehicles, characteristics of the wireless radio channel, and power and bit rate of radio transceivers, and (b) cyber issues, such as MAC layer access point associations and address resolutions (ARP), network layer addressing, routing and handoffs, and transport layer retransmissions lead to unpredictability in the timely and reliable dissemination of information to drivers. This paper presents compelling arguments in favor of new research directions in this area that are based on a cyber-physical systems (CPS) perspective. In particular, this paper makes three contributions. First, it considers a vehicle-centric perspective to survey and study the physics-and cyber-imposed impediments to the timely and reliable dissemination of information. Second, it presents a promising CPS solution to overcome a subset of the impediments discovered. Third, it outlines lessons learned indicating the need for more focused research and realistic testbeds. The evaluations presented in the paper are based on simulations conducted in the OMNeT++/INETMANET simulator framework for IEEE 802.11 networks. Lack of open ITS testbeds motivated us to choose simulation as an alternative to conduct our study
Framework for Modeling the Cognitive Process( )

1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

Information is key to command and control. Yet information alone is not enough when it comes to issues of command and control. With so much information readily available and increasingly so, we must develop better ways to combat information overload. Interestingly, the cognitive process itself sheds much light on problems facing the information age and can provide insight into what is going on with information at a fundamental level. In considering such a process, one should examine where information comes from, where it is going, what it's nature is and how it is used. This paper describes a signal-based perspective of information and how signals in general fuel the cognitive process. More significantly, we introduce a novel framework for conceptualizing the cognitive process. We present the concept of abstraction as one of two dimensions in our framework. Here abstraction is viewed overall as a function of space or form, with signals ranging anywhere from concrete to abstract. At one end of this spectrum are physical signals, for instance ones which are tangible and may readily be perceived by the senses. At the other end of the spectrum are abstract signals, for instance ones which may be conceived or realized by the mind but lack physical form. The second dimension in our framework represents time. Here the concept of generalization is portrayed overall as being a function of time or frequency, with signals ranging anywhere from data (time-sensitive, high frequency and least organized) to information to knowledge (time-insensitive, infrequently changing and most organized). In this dimension, signals tend to flow from many pieces of specific data (i.e., details) to fewer items having more significance (i.e., general knowledge). We combine the concepts of abstraction and generalization within our approach to form a unique perspective of the cognitive process, with information at the core, suggesting that this perspective may facilitate the modeling of cognition
Characterization of an Electro-Absorption Modulator Design With High-Dynamic Range for Broadband Analog Applications( )

1 edition published in 2008 in English and held by 0 WorldCat member libraries worldwide

An electro-absorption modulator (EAM) is designed to optimize dynamic range performance over 20 GHz bandwidth. The single stripe waveguide enables an extremely compact and integrated package to be fabricated with single mode fiber pigtails. The transfer function's shape permits suppression of higher order intermodulation products, yielding a spur-free dynamic range exceeding that of Mach-Zehnder designs. A dilute optical core diverts energy flow from absorbing layers into a low loss waveguide; the 20 dBm optical power tolerance is significantly higher than that of commercially available electro-absorption devices. The tunable performance over 20GHz is characterized and applications are discussed. New approaches to the broadband impedance matching requirements are calculated and the impact on system performance is assessed
Intent Driven Adversarial Modeling( )

1 edition published in 2005 in English and held by 0 WorldCat member libraries worldwide

Modern elements of military intelligence and decision making require predictions of adversary force actions and reactions to provide a complete and realistic viewpoint. Current methods for providing realistic adversary force simulation are largely manual processes. Adversarial simulation requires continual assessment of friendly courses of action and is currently human assessment capability limited. To develop a computational model of dynamic adversary behaviors that includes the ability to integrate with intelligence and mission data sources, computational models must address operational patterns, behaviors, or doctrines of present-day adversaries (terrorist cells, local insurgents, guerillas, and armed thugs) as well as more conventional force elements. The dynamic nature of adversary force behavior with respect to the changing capabilities, biases, beliefs, goals, intentions, and perceptions of friendly force actions must be addressed. The Emergent Adversarial Modeling System (EAMS) addresses these elements through explicit focus on adversarial intent as a driver for adversarial response. Specific capabilities address the changing nature of adversary composition. This paper will discuss the results of the ongoing EAMS research project into adversarial modeling and adversarial response simulation
 
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