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
  • Feature extraction for radar ship target recognition using compactly supported wavelets

    Publication Year: 1994, Page(s):66 - 73 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (288 KB)

    In this paper, we are mainly concerned with the application of orthogonal discrete wavelet transform in feature extraction for incoherent radar ship target recognition, based on the Daubechies' wavelets (1988). Experiments are carried out for the proposed method with practical video-echo data of four kinds ,and the corresponding results indicate that the computational complexity of the new method ... View full abstract»

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  • DOA estimation for diversely polarized antenna arrays

    Publication Year: 1994, Page(s):395 - 397 vol.1
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    This paper consider the problem of resolving signal received by an array of crossed dipoles. A method is proposed to estimate directions of arrival (DOA) only, which requires far fewer computations than those of the existing methods and can be used to arbitrary geometry arrays. The computer simulations are given to illustrate the performance achieved by the proposed method View full abstract»

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  • A high-speed and adaptive multichannel data recording system for radar target analysis

    Publication Year: 1994, Page(s):74 - 79 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (268 KB)

    Data acquisition is generally a prerequisite condition to conducting practical radar researches such as radar signal detection, automatic target recognition and etc. Because the target returns hold a very short time interval within the radar pulse repetition period, the common data recording systems cannot acquire the target returns efficiently, especially on those radars running in a continuous s... View full abstract»

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  • Management issues in developing reusable avionics software

    Publication Year: 1994, Page(s):866 - 873 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (620 KB)

    Developing reusable software for avionics systems is a challenge to software engineers. The task involves foreseeing the future applications, modeling real-world events, and using appropriate CASE tools throughout the development life cycle, and providing for storage and retrieval of reusable software components. This paper presents a model for developing and managing reusable software components,... View full abstract»

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  • A look at the radio frequency susceptibility of commercial GPS receivers

    Publication Year: 1994, Page(s):164 - 170 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (300 KB)

    The radio frequency (RF) susceptibility characteristics of two commercial Global Positioning System (GPS) receivers were evaluated. A first-order analysis was performed to predict the receiver susceptibility thresholds based on the receiver sensitivity and processing gain. The receiver susceptibility thresholds in the post-acquisition mode were then measured for various interference signal frequen... View full abstract»

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  • A kind of neural network similar to ART network with application to radar signal sorting

    Publication Year: 1994, Page(s):398 - 401 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (288 KB)

    In order to solve the problem of radar signal sorting in real time, this paper presents a kind of neural network (NN) similar to ART network. Its characteristic is to finish heuristic clustering algorithm of pattern recognition by using adaptive resonance theory (ART) on the basis of making good use of data statistic property. This NN has not the self-stabilized top-down structure of the general A... View full abstract»

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  • 3-D cockpit simulator displays-achieving precise depth placement of objects in graphic images

    Publication Year: 1994, Page(s):709 - 714 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (404 KB)

    The authors have developed software routines to produce 3-D images that can be used with any application. Each graphics application tends to have unique features such as the size of objects being drawn or the coordinate system in which these objects are displayed. For example, one application may display objects such as aircraft in a situational display while another displays aircraft system statu... View full abstract»

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  • Investigation of the sensitivity, selectivity, and reversibility of the chemically-sensitive field-effect transistor (CHEMFET) to detect NO 2, C3H9PO3, and BF3

    Publication Year: 1994, Page(s):342 - 349 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (548 KB)

    The sensitivity, selectivity, and reversibility of a CHEMFET gas microsensor were investigated as a function of several physical operating parameters. The CHEMFET's responses were expressed based upon the changes generated by modulating the electrical conductivity of the microsensor's thin-film, metal-doped, phthalocyanine-coated interdigitated gate electrode when exposed to a family of challenge ... View full abstract»

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  • The application of vibrating cylinder pressure transducers to non-military usages

    Publication Year: 1994, Page(s):1252 - 1258 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (524 KB)

    The evolution of vibrating cylinder pressure transducer technology within the author's organisation is described. Developed primarily for Military Air Data Systems applications, a series of design optimisations carried out since the 1980s has enabled a wider range of civil aerospace and ground based test equipment applications to be addressed. Such diversifications require consideration not only o... View full abstract»

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  • Tying sociology to information systems development

    Publication Year: 1994, Page(s):845 - 852 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (648 KB)

    Developing computer-based information systems has always been considered a technical process, traditionally under the control of the information systems department. Information systems development is considerably different today than it has been in the past because of technological change. Technological change has also brought about sociological change. End users are more involved in systems devel... View full abstract»

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  • Object-oriented applications in a rapid prototyping environment

    Publication Year: 1994, Page(s):814 - 819 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (420 KB)

    This paper describes a distributed, scalable hardware and software architecture that is being used to support a rapidly reconfigurable flight simulator (part-mission, part-task). The simulator is used by a cockpit design team to quickly evaluate competing design alternatives. It provides details of the software environment and the development of a cockpit display application is traced from design ... View full abstract»

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  • Genetic robustification of digital model-following flight-control systems

    Publication Year: 1994, Page(s):556 - 563 vol.1
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (336 KB)

    The dynamical characteristics of high-performance fighter aircraft vary considerably over typical operational flight envelopes, and digital model-following flight-control systems for such aircraft must accordingly be robust. However, the linearised dynamics of such aircraft are usually modelled as partially irregular plants, i.e. plants having rank-defective first Markov parameters for which no ro... View full abstract»

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  • Modified token passing protocols of high speed data bus

    Publication Year: 1994, Page(s):447 - 451 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (288 KB)

    In high speed data bus, the passing token is consecutively passed along the logical ring by step 1, which is used to each station of the logical ring having messages to transmit. But when some stations in the logical ring have not messages to transmit, it is necessary for us to look for efficient scheme to reduce the overhead. Idle stations transmit the passing token. In this paper, we propose two... View full abstract»

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  • Advanced design for quality avionic systems: a new roadmap for systems development

    Publication Year: 1994, Page(s):251 - 258 vol.1
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (572 KB)

    With respect to avionics systems, traditional design and manufacturing processes have proven themselves to be inadequate when it comes to meeting the new realities of the defense market place. Maintaining performance superiority in the face of today's reduced budgets and manpower requires new and disciplined processes, lower costs, shorter development cycles, and products that successfully balance... View full abstract»

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  • Radar target modeling and recognition based on scattering centers

    Publication Year: 1994, Page(s):80 - 85 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (220 KB)

    Based on the concept of scattering center and applying approximate scale relationship of back scattering signals in two near aspect angles, this paper adapts Mellin transform to reconstruct target's pattern and to overcome effectively problems of features extraction caused by the factor that scattering centers are sensitive to the changes of aspect angles. By using three scale aircraft targets, th... View full abstract»

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  • Representation issues in creating an avionics domain-specific software architecture domain model

    Publication Year: 1994, Page(s):874 - 881 vol.2
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (524 KB)

    A domain-specific software architecture describes a family of related software applications. A domain model is a theory of how the software applications in a domain can be constructed from prefabricated components. This paper presents a domain model for avionics software. It describes how complex avionics systems can be assembled from primitive building blocks. Based on the Advanced Research Proje... View full abstract»

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  • One-dimensional ISAR imaging of multiple moving targets

    Publication Year: 1994, Page(s):171 - 174 vol.1
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (232 KB)

    In this paper, a one-dimensional inverse synthetic aperture radar imaging method is developed to image multiple moving targets located in the same beam of antenna and the same range gate using a narrow band coherent radar. It uses the Short Time Fourier Transform (STFT) to separate target signal from the mixed returned signal in the two dimensional time-frequency domain. Therefore, the multiple mo... View full abstract»

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  • Risk management for the B-1B computer upgrade

    Publication Year: 1994, Page(s):1143 - 1149 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (436 KB)

    The B-1B has received a great deal of criticism since it was first fielded in 1985. Much of this criticism, deserved or not, was the result of perceived shortcomings in the avionics system-especially the Defensive Avionics System. These shortcomings were largely the result of software deficiencies, the B-1B is now entering a conventional mission upgrade, which will include replacing some of the co... View full abstract»

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  • CNDs and RTOKs: are we addressing these problems correctly?

    Publication Year: 1994, Page(s):402 - 410 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1176 KB)

    High rates of Cannot Duplicates (CNDs) and Retest OKs (RTOKs) in aircraft avionics has led to excessive line and shop maintenance times and maintenance loading. This, in turn, results in decreased sortie rates, long logistic tails, and higher life-cycle cost. Grumman has been addressing these problems, via the development of smart BIT (built-in test) technology. This paper discusses this work and ... View full abstract»

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  • Integrated mission precision attack cockpit technology (IMPACT) role playing

    Publication Year: 1994, Page(s):720 - 725 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (456 KB)

    The Cockpit Integration Division within Wright Laboratory at WPAFB, is exploring the Pilot Vehicle Interface (PVI) requirements for performing a precision strike mission against multiple mobile and fixed targets, at night and in adverse weather, in a single seat fighter. Such a mission has the potential for dramatically increasing pilot workload and compromising mission effectiveness. To address t... 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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  • Development of a data acquisition and processing system for fiber optic sensor arrays

    Publication Year: 1994, Page(s):350 - 353 vol.1
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (308 KB)

    A data acquisition system for a fiber optic sensor array is presented. The design considerations of the system including fiber optic components, electrical components, data acquisition and processing components are discussed. The completed sensor system is capable of measuring the spatial distribution of physical fields such as temperature, pressure, and displacement discretely. The software used ... View full abstract»

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  • Reliability and maintainability: a common ground for cooperation [aircraft]

    Publication Year: 1994, Page(s):1259 - 1264 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (508 KB)

    Except for flight critical systems and safety, the commercial aircraft manufacturers and the airlines have not placed much emphasis on reliability and maintainability. When they did include reliability, it was mainly in the form of redundant systems rather than more robust and reliable parts. With a worldwide economic slowdown and a declining defense budget, both the commercial airline industry an... View full abstract»

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  • Software support for ultra-reliable digital avionics (URDA)

    Publication Year: 1994, Page(s):905 - 910 vol.2
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (452 KB)

    In 1992, Texas Instruments (TI) began executing the Ultra-Reliable Digital Avionics (URDA) contract sponsored by Wright Laboratory. Because of congressional action, the URDA program was suspended and is being restructured at the time of this writing. The purpose of the TI URDA program is to develop an advanced development module (ADM), which is a repackaging of two of TI's Aladdin basic processing... View full abstract»

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