Proceedings of the IEEE 1992 National Aerospace and Electronics Conference@m_NAECON 1992

18-22 May 1992

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  • Proceedings of the IEEE 1992 National Aerospace and Electronics Conference, NAECON 1992 (Cat. No.92CH3158-3)

    Publication Year: 1992
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    Freely Available from IEEE
  • A comparison of free space and fiber mixer performances in a heterodyne laser radar

    Publication Year: 1992, Page(s):1256 - 1262 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (464 KB)

    The author compares the signal-to-noise ratio at the IF stage of a heterodyne laser radar receiver using the traditional free space mixer with the IF CNR from a heterodyne laser radar receiver using a fiber mixer stage. The comparison indicates the fiber mixer will generally under-perform the free space mixer unless the f-numbers of the receiver optics and the single-mode fiber are approximate mat... View full abstract»

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  • Electro-optic systems research using the variable parameter FLIR

    Publication Year: 1992, Page(s):1263 - 1267 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    An efficient and cost-effective approach to electrooptic systems research is to investigate system concepts and sensor components on a generic testbed that can be readily modified for a variety of applications. The variable-parameter FLIT is a research and development testbed for evaluating systems concepts, testing sensor components, and providing benchmark data for model and figure-of-merit vali... View full abstract»

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  • A linear systems approach to evaluating imaging arrays

    Publication Year: 1992, Page(s):1268 - 1273 vol.3
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    The authors examine methods of varying the standard modulation transfer function analysis approach to accommodate sensor sampling. Sampled imaging arrays such as charge-coupled devices do not satisfy the spatial shift-invariance criteria,which is required to apply traditional linear systems analysis techniques. The nonisoplanatic condition in imaging arrays is due to the phase dependency of the im... View full abstract»

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  • Total training systems design to function a total quality management application

    Publication Year: 1992, Page(s):1018 - 1023 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    An advanced aircrew training system and electronic warfare officer training are discussed. Training system functions include training system management, administration, support, delivery, evaluation, quality assurance, analysis, design, and development. Designing the overall training system architecture to these basic functions and then allocating them to respective training system components ensu... View full abstract»

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  • Design of a rule-based fuzzy controller for the pitch axis of an unmanned research vehicle

    Publication Year: 1992, Page(s):449 - 455 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    A control scheme based on fuzzy logic is proposed. The objective is to design a fuzzy controller for the pitch axis of an unmanned research vehicle. The inputs to the controller are the error and the change in error. A set of fuzzy rules that makes the controller look like a proportional-plus-derivative controller is obtained and simulated on Matrixs, a software package for the analysis... View full abstract»

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  • Analysis of planar microstrip discontinuities in MMIC's

    Publication Year: 1992, Page(s):1274 - 1280 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    Planar microstrip discontinuities are analyzed by the full-wave, space-domain moment method at microwave and millimeter wavelengths. Redundant calculations in the moment matrix are eliminated by utilizing various symmetries. At lower microwave frequencies quasi-static approximations are invoked to simplify the analysis. Sample computed results are presented for the current distribution and the View full abstract»

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  • Total quality management and military reform

    Publication Year: 1992, Page(s):1024 - 1030 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB)

    The total quality management (TQM) effort has had notable successes; however, the creation of a quality management structure imposes risk on many organizations. The author appraises especially conspicuous bureaucratic patterns, relates those patterns to problems within military organizations, and examines the opportunities and the risks of the TQM initiative. Similarities between behavior in milit... View full abstract»

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  • Functionally integrated resource manager for real-time avionics data

    Publication Year: 1992, Page(s):623 - 627 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    Describes avionics database issues in systems fielded by the Air Force, and the impact of integrated avionics on the database problem, and contrast current approaches to management of avionics data with object-oriented design (OOD) approaches being developed under the FIRM (Functionally Integrated Resource Manager) Program. Potential cost savings during development and maintenance that could resul... View full abstract»

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  • Unified subspace approach to partially adaptive beamforming

    Publication Year: 1992, Page(s):143 - 148 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    A study of the subspace approach to partially adaptive configurations is presented. The main goal of partially adaptive processing is to make the degrees of controllable freedom match the number of jammers; otherwise, the weight estimates by incompleted data can lead to sidelobe distortion and other harmful effects. Based on the theoretical analysis of the sidelobe fluctuation principle, the effic... View full abstract»

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  • Direct optical control: a lightweight backup consideration

    Publication Year: 1992, Page(s):456 - 463 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    The author addresses the benefits and issues associated with direct optical flight control and discusses the status of work to bring it to reality. It is noted that the approach considered is compatible with existing and future fly-by-wire and fly-by-light actuation approaches, can be used as a dedicated backup or integrated with primary fly-by-light systems over common command paths, and can be i... View full abstract»

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  • Design of the Boeing 777 electric system

    Publication Year: 1992, Page(s):1281 - 1290 vol.3
    Cited by:  Papers (2)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (896 KB)

    The Boeing 777 electric system is being designed to take advantage of technologically proven concepts, as well as new concepts, in order to provide a fully automated state-of-the-art system. The system is comprised of two independent electrical systems, the main and the backup. Automation of the system is performed by the state-of-the-art, microprocessor-based control units. These units perform sy... View full abstract»

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  • Integrated automated management system for the program office

    Publication Year: 1992, Page(s):1031 - 1036 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Presents a concept for a comprehensive automated management support system which provides day-to-day management support, executive-oriented summary level information, the metrics reports for a system program office (SPO). The basis of this system is an integrated set of automated tools which meet specific functions requirements: schedule, cost, documentation, configuration and data management, eng... View full abstract»

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  • Additional developments in embedded computer performance measurement

    Publication Year: 1992, Page(s):628 - 634 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (708 KB)

    Reports on the results of Phase II of the Advanced Avionics Technology Demonstration (AATD) Embedded Computer Performance Measurement (ECPM) Program performed by Texas Instruments (TI) for the Naval Avionics Center (NAC). During the first phase of the AATD program, which began in June 1990, a novel method was developed for measuring spare processor and I/O (input/output) throughput reserves. These... View full abstract»

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  • Avionics software performability

    Publication Year: 1992, Page(s):558 - 564 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Describes and illustrates a framework for modeling avionics software performability. The model captures the dependencies and interactions between performance and dependability in avionics software systems and permits the investigation of operational software behavior and tradeoffs between performance and dependability. Simple examples are presented which indicate how the performability models can ... View full abstract»

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  • An improved SVD based algorithm for bearing estimate

    Publication Year: 1992, Page(s):149 - 154 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A study of the direction of arrival (DOA) matrix is presented. For the case of low signal-to-noise ratio (SNR) the standard DOA matrix usually yields poor performance. By means of the singular value decomposition (SVD) technique, with a cleaned or SNR enhanced data record, the author propose construction of the DOA matrix by the lower-rank Froebinius approximation. Two types of improved DOA matric... View full abstract»

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  • Solutions of nonlinear matrix equations arising in nonlinear control theory. I

    Publication Year: 1992, Page(s):464 - 467 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    An attempt is made to establish the existence of solutions of nonlinear matrix equations of the form X(z)A( z)X(z)=X(z), where all matrices X(z), A(z) are holomorphic matrices. Such matrix equations arise in nonlinear control theory of nonlinear dynamical systems where A(z)... View full abstract»

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  • Packaging multichip modules (MCMs) into SEM-E configurations

    Publication Year: 1992, Page(s):1291 - 1295 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    The authors describe, in the context of a particular processor system development, a multichip module (MCM) technology aimed at meeting the challenges of application of advanced digital electronics systems in military platforms. In 1989, ERIM began a program to develop a multimodal advanced target recognition (ATR) processing engine. The ATR processor can be configured in any of several physical f... View full abstract»

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  • The DESC quality program for electronic parts

    Publication Year: 1992, Page(s):1037 - 1042 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    Describes the Defense Electronics Supply Center's (DESC's) quality program and the results achieved. The primary objective of the program is to improve the quality of electronic parts being purchased. Emphasis is on the high payoff areas of weapon system parts and the critical items with high demands. Three main topics discussed are the qualification certification program, the product quality prog... View full abstract»

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  • An evaluation of three function point models for estimation of software effort

    Publication Year: 1992, Page(s):635 - 642 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (568 KB)

    It is pointed out that function point analysis has become well-established as a method for estimating software size and, sometimes, software effort. However, the accuracy of estimation models using function points to estimate size or effort has not been ascertained significantly. The authors summarize a study performed to assess the expected accuracy of three function point-based models: the Tecel... View full abstract»

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  • A comparative study of digital halftoning techniques

    Publication Year: 1992, Page(s):1139 - 1145 vol.3
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    Digital half-toning, also known as spatial dithering converts a gray scale image into bilevel output for graphical devices such as cathode ray tube (CRT) monitors or laser printers. The author surveys several digital half-toning techniques such as ordered dithering, error diffusion, and a dithering scheme along the path of a special class of fractals, namely space-filling curves. A comparative stu... View full abstract»

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  • Integrated diagnostics for software

    Publication Year: 1992, Page(s):565 - 571 vol.2
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    Introduces the idea of diagnostics and integrated diagnostics for the diagnosis of software errors. He examines the differences between hardware diagnostics and software diagnostics. He defines what is meant by the terms integrated and diagnostics to make clear the distinctions between the many ways these terms are often used together. He also defines what is meant by software diagnostics and inte... View full abstract»

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  • Solid-state power controllers for the next generation

    Publication Year: 1992, Page(s):155 - 162 vol.1
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Real-time solid-state power controllers (SSPCs) are used in the design of the electrical load management center (ELMC). ELMCs which are either centrally or remotely located can achieve the overall system flexibility needed for next-generation complex platforms. The electrical and mechanical features of the SSPC series are discussed, together with military screening, mechanical specifications, and ... View full abstract»

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  • Improved trinary associative memory for character recognition

    Publication Year: 1992, Page(s):905 - 909 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    Character recognition by a trinary associative memory (TAM) neural network model is investigated. Three different inner product thresholding schemes, namely, zero plus average thresholding, arithmetic mean thresholding, and a novel adaptive thresholding are examined. It was shown by a simulation that the novel threshold prescription scheme with the permanent inhibition scheme enhanced the converge... View full abstract»

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  • Design of robust digital model-following flight control systems

    Publication Year: 1992, Page(s):468 - 474 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The robustness characteristics of digital model-following systems incorporating fast-sampling PID (proportional plus integral plus derivative) controllers are elucidated in the case of both regular and completely irregular linear multivariable plants. It is shown that the plant-parameter variations tolerable by such digital model-following systems can be expressed very simply in terms of the step-... View full abstract»

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