Large, embedded real-time software developments often lack performance engineering expertise due to a shortage of performance experts. expert system technology offers a solution to the shortage of performance engineering experts. two technical objectives must be researched before an expert system… More

During the development of complex computer systems, performance engineering techniques are often not applied or are misapplied which results in systems that do not meet thespecified performance criteria or must undergo costly redesigns. an integrated computer system modeling language overcomes the… More

The estimation of the computer capacities required to support a mission are usually the subject of much discussion. estimates of the workload and other parameters vary greatly. the reason for this is that most applications do not fit the traditional timing and sizing effort. none of the three… More

During development of complex, embedded systems quantitative tradeoffs of reliability and timing performance are often not considered. degraded performance in one or both of these areas can result. an integrated reliability and timing analysis tool will provide the capability for simultaneously… More

This is a proposal to design and implement an efficient and economical microprocessor-based testbed for system-level simulation which is easily scalable in hardware resources and which has a powerful development environment. the performance target of the testbed is a time compression ten time… More

A new generation of computers will be required to support the air force in the 1990's and beyond. applications such as integrated battle management, remote sensing, image processing, intelligent robotics, and space vehicle control will require reliable computing power which exceeds that projected… More

Two local area network (lan) standards, ieee 802.5 and ansi x3t9.5 ffddi, have seen increased use among both military and industrial users especially for applications which have time-critical performance requirements. these standards are the basis of proposed navy standards, designated safenet-i and… More

This research will ultimately produce an interactive algorithm design tool for embedded multiprocessor systems. designers will specify algorithm structure as a directed graph of interconnected nodes. the tool automatically partitions these graphs into tasks and then assigns these tasks to… More

Timing and reliability performance are becoming increasinglycritical characteristics of embedded computer system software. complex tradeoffs involving interactions between timing and reliability properties need to be made during design to ensure that systems will satisfy stringent performance… More

Use of distributed computing in navy systems is increasing. distributed operating systems (dos) provide the advantages of distributed computing to user applications. requirements for realtime performance, reliability/fault tolerance, and security must be addressed by a dos. application of dos… More

Massively interconnected computers, commonly called neurocomputers, are at the heart of sixth-generation computing. to date, however, only neurocomputer simulators and emulators are available. this research project will develop tools and techniques to translate neurocomputers into computationally… More

The most critical deficiency with case products as applied to time-critical software design is their inability to adequately support the trade-off process involving timing and performance issues. only a few of the so-called real-time tools support the allocation and budgeting of timing requirements.… More

Increasing Navy use of embedded computer systems results in stringent requirements for real-time performance, reliability, and cost. Computer systems are critical embedded components of Naval warfare systems. The demands on embedded computer systems are increasing in terms of information processing… More

Dependability is an increasingly critical characteristic of the Navy's mission critical computer systems. These systems must be maintained in a state of readiness to support critical mission functions, and must be able to perform these functions correctly despite the presence of faults in system… More

Formal methods based on rigorous mathematical specification and verification techniques have been shown to be a feasible way of identifying design errors early in the development of complex, ultrareliable computer systems. However, the mathematical expertise required to exercise formal verification… More

Reliability and performance are critical characteristics of the Army's avionics systems. These systems must meet stringent requirements in the areas of: (1) dispatchability, or operational readiness to support missions; (2) dependability, or the ability to perform critical functions correctly during… More

The ultimate purpose of the proposed R&D is to develop and demonstrate an innovative software development environment which supports the engineering, analysis, development, test, maintenance, and reuse of software for embedded, heterogeneous, real-time systems. The proposed approach is innovative in… More

The purpose of the proposed R&D is to develop and demonstrate an innovative lagacy engineering methodology which supports the development and maintenance of complex, heterogeneous systems employing COTS and legacy components.

System dependability is an increasingly important characteristic of mission critical computer systems. These systems must be maintained in a state of readiness to perform critical functions, and must be able to perform these functions correctly despite the presence of imperfections in system… More

The ultimate goal of the proposed R&D is to design, develop and validate innovative CORBA-based software security services and compatible hardware architectures which provide high assurance for multi-level secure (MLS) network applications. The proposed approach is innovative in that it is based on… More

The accuracy of positioning data derived from mobile platforms for navigation, surveillance, reconnaissance, and target designation are only as accurate as the position and orientation measurements of the platform itself. While Kalman filter based integration of Global Positioning System (GPS) and… More

Detection and ranging (DR) of the space objects, such as space debris or non-cooperative space vehicle is important for national space assets protection and survivability. We propose DR laser system with its design based on fiber laser (FL) technology that can satisfy space applications… More

This Phase I proposal identifies the key system requirements for an integrated space based multi-sensor space surveillance system capable of mission critical target tracking, discrimination, and identification (TDI) against closely spaced objects (CSO). In the proposed concept a set of visible and… More

This proposal discusses development of an innovative laser-based system to support protection of the space-based assets (SBA). The proposed concept enables steady tracking and high pointing accuracy and is capable of selecting and cueing protection countermeasures against adversary space objects… More

Compact, high power, 100 kW class plug-in efficient lasers, although difficult to develop, are critical for various applications. Existing solutions to this problem, based on coherent or incoherent combining of multiple fiber channels, have shown limited success. A new paradigm must be considered,… More

Unmanned air and ground vehicles (UAV and UGV) are critical in all aspects of military strategy including tactical strikes, surveillance, and even facilities management. While vehicle technology has advanced quickly, the weak link is the single-view fixed-sensor user interface. Intuitive… More

We propose a dual sensor system which supports in-flight global damage assessment in composite structures (GDACS) including air-frame superstructure and rotor blade assemblies. The system integrates in-flight structural health monitoring for impact damage detection (IDD) with flight-line deployment… More

ABSTRACT: This proposal identifies the key system requirements for an integrated space-based multi-sensor space surveillance system capable of mission critical target-tracking, discrimination and identification (TDI) against closely spaced objects (CSO). In the proposed concept, a set of visible… More

This proposal lays out a development program for a new laser Doppler vibrometer (LDV) instrument designed for non-destructive inspection (NDI) of composite airframe structures which are susceptible to core-crush damage, disbonds and delaminations, for example in composite rotor blades. The sensor… More

The development of Distrbuted Aperture System (DAS) for helicopters and fixed wing aircraft constitutes a major breakthrough in situational awareness. However, access is limited to the personnel with Head Mounted Displays and head tracking systems. Aircrew in rear of a helicopter range over a volume… More

ABSTRACT: We propose a technique which employs a variety of sensors combing data to form a comprehensive picture of the situation of interest. The goal behind this technology is to increase the effectiveness of military objectives by giving a more complete, integrated view of situations to enable… More

ABSTRACT: A multi-functional laser (MFL) is becoming an essential component of a prospective active laser system for tracking, characterization and discrimination of space objects. Low intensity, object-returned signals in combination with its large Doppler frequency shift requires novel solutions… More

ABSTRACT: The U.S. Air Force needs an electro-optical system capable of a mission critical, high-performance system capable of active or passive detection and characterization of the wavefront backscattered by an object of interest. In the novel AS & T solution to the Air Force requirements, a… More

ABSTRACT: This proposal plans to develop an Intra-cavity Coherent Optical Amplifier (ICOA). The Wide Field of View (FOV) High Gain Coherent Optical Amplifier is a critical element of electro-optical systems for detecting the scattered light for coherent imaging of remote objects. A fully developed… More