Aerospace and Electronics Conference, 1994. NAECON 1994., Proceedings of the IEEE 1994 National

23-27 May 1994

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  • Proceedings of National Aerospace and Electronics Conference (NAECON'94)

    Publication Year: 1994
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    Freely Available from IEEE
  • A CF-based algorithm for moving dot target detection in FLIR image sequence

    Publication Year: 1994, Page(s):354 - 357 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    Dot target detection in FLIR image sequences with very low SNR has been used in guidance and surveillance systems and many algorithms have been developed to solve this problem. In this paper, a certain factor (CF) based algorithm was proposed, It is composed of two components: a predetector and a trace matcher. The predetector implements a N- P test on each pixel in the images. The trace matcher m... View full abstract»

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  • Tightly-coupled parallel implementations of an avionics algorithm

    Publication Year: 1994, Page(s):362 - 366 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    It has long been recognized that there exists an upper bound on the computing speed attainable with uniprocessor architectures. The state of the industry has been such that the regular performance improvements in silicon technology have kept the need for widespread use of tightly-coupled parallel architectures to a minimum. However, with the increasing computational demands placed upon uniprocesso... View full abstract»

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  • Computation of moment invariants and Hadamard transform using neural net

    Publication Year: 1994, Page(s):367 - 370 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    In this paper, computation of moment invariants and Hadamard transform using the Tank and Hopfield linear programming neural net is proposed. First, the relationship between the one-dimensional moments and the one-dimensional Hadamard transform (1D HT) is derived. One can compute the moments of grey level image through 2N 1D HT's except for a negligible amount of addition, shift and multiplication... View full abstract»

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  • High resolution 2-D ISAR image collection and processing

    Publication Year: 1994, Page(s):371 - 377 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    This paper goes into the practical and theoretical foundations of 2-D ISAR (inverse synthetic aperture radar) image collection and processing. Its application to validate high definition aircraft geometry models is also discussed. The ISAR data is collected by a Ground-to-Air Measurement System (GTAMS) at Tyndall Air Force Base, Florida. The GTAMS System consists of a ultra high range resolution (... View full abstract»

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  • Cognitive engineering computer interfaces. I. Knowledge acquisition in the design process

    Publication Year: 1994, Page(s):753 - 755 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Much is being written about “cognitive engineering” or the process of applying psychology and human factors engineering data to human interface design. Most of this literature is strong on theoretic advocacy of such a process but weak on implementation details. The present paper describes in detail the first part of one suggested methods for cognitive engineering of computer interfaces... View full abstract»

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  • Rapid and accurate timing simulation of radiation-hardened digital microelectronics using VHDL

    Publication Year: 1994, Page(s):378 - 385 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (660 KB)

    The development of a fast, yet accurate, timing simulation capability based on VHSIC Hardware Description Language (VHDL) without the use of back annotation of timing delay information is presented. This simulator is intended, primarily, for use with radiation-hardened microelectronic circuits in simulating timing of circuit operation in the pre-radiation and post-radiation environment. Additional... View full abstract»

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  • Cognitive engineering computer interfaces. II. An objective design process

    Publication Year: 1994, Page(s):756 - 760 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (392 KB)

    Much is being written about “cognitive engineering,” the process by which psychology and human factors engineering data are applied to human interface design. Most of this literature is strong on theoretic advocacy of such a process but weak on implementation details. The present paper is an attempt to describe a process that will combine 1) knowledge acquisition, 2) human cognitive da... View full abstract»

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  • Mutual coupling calibration using a single source in near field

    Publication Year: 1994, Page(s):424 - 426 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (128 KB)

    In this paper a mutual coupling calibration method suitable for uniform linear arrays (ULA) and circular arrays (UCA) is presented where only one known calibration source in the near field is necessary for effective calibration. The paper has also discussed the position error influence of the source on the calibration, and the optimum azimuth of the source is analyzed. Finally some simulation resu... View full abstract»

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  • A qualified radiation hardened EEPROM for space and tactical weapons applications

    Publication Year: 1994, Page(s):761 - 764 vol.2
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (236 KB)

    A radiation hardened 64 K CMOS SONOS full featured EEPROM, W28C64, is described. A team comprised of Sandia National Laboratories and Westinghouse Advanced Technology Division has successfully developed a new design and fabrication process resulting in a production ready, radiation hardened product qualified for satellite, tactical weapons, and commercial systems. The part is software compatible w... View full abstract»

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  • Practical techniques for distributed real-time simulation

    Publication Year: 1994, Page(s):890 - 896 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Real-time aircraft and avionics simulation computing is the foundation of systems used for testing embedded avionics software, for flight training simulation, and for engineering research simulation. Distribution of the simulation software over a set of smaller, inexpensive computers, in lieu of a traditional mainframe has been shown to dramatically reduce the cost of building a real-time simulati... View full abstract»

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  • Field programmable gate array based reconfigurable preprocessor

    Publication Year: 1994, Page(s):427 - 434 vol.1
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    Programmable preprocessing solutions are often unable to meet the required performance. Custom hardware implementations of preprocessors, however, are seldom reusable, flexible or quickly realized. The Configurable Hardware Algorithm Mappable Preprocessor (CHAMP) technology is a solution to these problems. Developments in field programmable gate array (FPGA) hardware and software have made a recon... View full abstract»

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  • Task simulation using human figure models

    Publication Year: 1994, Page(s):765 - 770 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    Modern design evaluation technologies based on human figure simulations are helping us to make fuller and more accurate assessments of human/machine and workplace interfaces. As computer graphics and related digital technologies advance, one will be able to illustrate, predict, evaluate, and document a wider array of human performance issues involving system useability concurrently with design dev... View full abstract»

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  • Simulation of stable take-off of mini-RPV

    Publication Year: 1994, Page(s):975 - 982 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The flight system of mini-Remotely Piloted Vehicle (RPV) using rocket booster to take off, composed of RPV and booster, may be instable during taking off. Whether or not the RPV takes off normally and stability is the first key problem to complete flying tasks. The paper accounts for what conditions correlate its stable take-off characteristics. Because the flying speed increases continuously from... View full abstract»

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  • An approach for deriving object-oriented metrics

    Publication Year: 1994, Page(s):897 - 904 vol.2
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The object-oriented approach is gaining wider acceptance in the software engineering community as an alternative to structured design methodologies. The major disadvantage of structured methodologies is the discontinuity between analysis, design, and implementation phases. In object-oriented approach this problem has been taken care of as the same concepts have been extended to all the phases of s... View full abstract»

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  • Multirate estimation

    Publication Year: 1994, Page(s):435 - 440 vol.1
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    A scheme of low rate estimation from high rate measurements using a filter bank is derived in this paper. The dimensions of the low rate measurement models are the same as the high rate measurement model and, due to the lowpass filtering effect of the filter bank, better approximated estimates are obtained View full abstract»

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  • Compression of color information in digitized images using an artificial neural network

    Publication Year: 1994, Page(s):772 - 778 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Digitized color images can convey a considerable amount of information, but they also may require a lot of space for storage. To save space, color images may be compressed. A number of different algorithms have been used to compress color images, but some of them lose significant information in the compression process. An artificial neural network technique, the Kohonen Map, is able to able to com... View full abstract»

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  • Application of neural control to active structural load alleviation

    Publication Year: 1994, Page(s):532 - 539 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (652 KB)

    Modern large transport aircrafts are subject to considerable structural flexibility during flight. In order to improve the dynamic response of such aircraft the use of active control technology is proposed which will alleviate the structural loads to which the airframe is subjected as a result of manoeuvre demands or encountering atmospheric turbulence. A number of methods, including linear optima... View full abstract»

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  • Optimum channel and source integrated (CSI) coding

    Publication Year: 1994, Page(s):498 - 506 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    A novel analog channel and source integrated (CSI) coding formulation is offered that inherently arises from a systematic generalization of a recently offered minimum mean squared error (MMSE) linear state space (LSS) predictive transform (PT) source coding formulation. The CSI coding formulation leads to both suboptimum and optimum coders. The suboptimum coder has a decoder that is relatively sim... View full abstract»

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  • A method of signal processing in a TWS information processing system

    Publication Year: 1994, Page(s):411 - 415 vol.1
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A method of signal processing in an airborne TWS (Tracking While Scan) information processing system is presented in this paper. The dual-threshold-detection method is proposed which will considerably reduce the number of samples requiring to store without reducing the detection performance and parametric estimation accuracy of targets. The distributed parallel processor architecture of three comp... View full abstract»

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  • Automated validation of operational flight programs (OFPs) and flight training simulators

    Publication Year: 1994, Page(s):1006 - 1013 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    Operational flight programs (OFPs) that run in the embedded computer systems (ECSs) in modern aircraft must undergo extensive and rigorous validation testing before they are released for flight. Similar validation testing is required for the highest fidelity flight training simulators to assure that they accurately represent the behavior of the actual aircraft. This validation process, today, is l... View full abstract»

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  • Conceptual design of test aides for flight critical control systems

    Publication Year: 1994, Page(s):911 - 918 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB)

    This paper describes the conceptual design of a suite of tools that will aid and/or automate various aspects of the control system verification and validation process. The suite provides for the definition of system data, generation of test procedures, and semi-automated test execution and evaluation. One element of this long-range vision, the Test Procedure Generator, is in the early stages of de... View full abstract»

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  • Application of superresolution techniques to the ground OTH radar

    Publication Year: 1994, Page(s):441 - 446 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The conventional angular superresolution techniques tend to be based on the assumption of independent noise samples between array elements. In this paper, however, the unindependent real sea clutter and atmospheric noise samples are considered and supposed to be prevailing for a practical HF ground wave OTH radar system, to which some superresolution approaches are applicated and analysed View full abstract»

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  • Transitioning opens systems standards to the DoD

    Publication Year: 1994, Page(s):1265 - 1271 vol.2
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    There is a growing desire within the DoD to use open systems standards. Several groups with the DoD (e.g. Tri-Service Open Systems Architecture Committee and Naval Air Systems Command Advanced Avionics Architecture and Technology Review Team) and industry sponsored standards committees (e.g., Society of Automotive Engineers Avionics Division) are exploring the transition of open system standards t... View full abstract»

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  • Optical computing for artificial neural network implementations

    Publication Year: 1994, Page(s):779 - 786 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (604 KB)

    Artificial Neural Networks (ANNs) have gained recognition as a valuable tool to aid in the solution of difficult computing problems. Despite an abundance of work in the application and mathematical foundations of ANNs there currently exists no consensus on how to implement ANNs in hardware. The goal of this paper is to motivate the use of optical computing technologies to meet the huge computation... View full abstract»

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