15th DASC. AIAA/IEEE Digital Avionics Systems Conference

27-31 Oct 1996

Filter Results

Displaying Results 1 - 25 of 72
  • Electromagnetic vulnerability testing of aircraft using mode-stirred techniques

    Publication Year: 1996, Page(s):351 - 357
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    Electromagnetic vulnerability (EMV) testing is typically performed on aircraft using a standard method where the aircraft is directly radiated by an antenna, with no mode-stirring. Since a standing wave pattern will cause peaks and nulls in the field inside the aircraft, many antenna aspect angles should be used to assure that all equipment on board the aircraft is exposed to the appropriate field... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electromagnetic coupling paths evaluated from inside a commercial aircraft

    Publication Year: 1996, Page(s):345 - 350
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    In 1995, the Federal Aviation Administration (FAA) Technical Center's Aircraft Security Research and Development (R&D) Department initiated a Research Grant with Veda Incorporated to investigate aircraft avionics' response to onboard intentional electromagnetic interference (EMI). Many organizations have performed applicable research in areas similar to this goal however, several basic questio... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A high performance 4×4 inch AMLCD for avionic applications

    Publication Year: 1996, Page(s):245 - 250
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Image Quest has developed a flight quality, high resolution, full color, high luminance, wide temperature range display module based on Active Matrix LCD (AMLCD) technology that has excellent contrast in full sunlight. The display is well suited for use in electronic replacements for the electro-mechanical 5ATI (five inch case size) flight indicators and offers greatly improved display format flex... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Portable electronic devices: which direction?

    Publication Year: 1996, Page(s):339 - 343
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    This paper examines the background and development of the portable electronic device (PED) problem. Although these devices were not perceived as a problem in the past, the proliferation of computer-based electronic devices, small radio receivers, transceivers, telephones, and video cameras has created a new class of problems for both modern and older civil transport aircraft. The proliferation of ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • AMLCD modeling and display performance at Image Quest Technologies

    Publication Year: 1996, Page(s):239 - 243
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Avionic cockpit display applications require AMLCD's having extended and specific viewing angle characteristics. A typical cone is +/-60 degrees horizontal, and 0 to +30 degrees vertical. We used a Berreman 4×4 matrix based model to identify the necessary birefringent film values to optimize the display. The key parameter in the model was maximizing the region where the contrast ratio is gre... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An optimal array processor for GPS interference cancellation

    Publication Year: 1996, Page(s):285 - 291
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (544 KB)

    Of the wide variety of array processors, which are available to GPS receiver designers for noise and RF interference suppression, few achieve good performance and possess well-defined signal preservation properties. We introduce a new optimal array processor for the reception of GPS signals in RF interference and noise, that maximises geometric positioning precision. Comparison with well-known and... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • User portability in open systems

    Publication Year: 1996, Page(s):205 - 210
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The open systems concept in the design of computer-based systems has become accepted as a method for developing cost-effective systems. One goal of open systems design within the U.S. Department of Defense is user portability. User portability can be described as the ability of users to move from one application or system to another, with minimal difficulties. It is accomplished by applying style ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Cavity to cavity coupling measurements in commercial aircraft and the implications for on-board operation of personal electronic devices

    Publication Year: 1996, Page(s):333 - 338
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    Characterization of the cavity electromagnetic environment and various coupling mechanisms to aircraft systems have been performed for internal emitters. One potential coupling mechanism is radiative coupling to wire bundles which then penetrate an electronic system enclosure as well as direct aperture coupling to the enclosure. This paper addresses the issue of cavity-to-cavity coupling or the el... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fiber-optic component testing

    Publication Year: 1996, Page(s):373 - 380
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (860 KB)

    Over the last few years, the Adverse Environment Test Program (AETP) has developed a unique facility at McClellan Air Force Base (AFB), Sacramento, CA. The AETP provides a means for ensuring the nuclear survivability of fiber optic/electro-optic systems for military aircraft, ships, missiles, and ground systems, as well as space-based EO systems. In this paper, we introduce this facility and descr... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New millennium deep space Tiny Transmitter: first phase of a digital transponder

    Publication Year: 1996, Page(s):225 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (508 KB)

    An advanced technology X- and Ka-band (8 and 32 GHz) Tiny Transmitter is being developed for the New Millennium program and is described in this paper. The Tiny Transmitter is the first development phase of the Tiny Transponder which will incorporate recent advances in miniaturization and flexibility of radio systems by utilizing digital radio techniques. These techniques incorporate digital techn... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Developing a design complexity measure

    Publication Year: 1996, Page(s):31 - 36
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The cost to develop and maintain software is increasing at a rapid rate. The majority of the total cost to develop software is spent in the post-deployment-maintenance phase of the software life-cycle. In order to reduce life-cycle costs, more effort needs to be spent in earlier phases of the software life-cycle. One characteristic that merits investigation is the complexity of a software design. ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Dynamic fault tree analysis for digital fly-by-wire flight control system

    Publication Year: 1996, Page(s):479 - 484
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    Digital Fly-By-Wire (FBW) Flight Control System (FCS) is designed to achieve high level of reliability, frequently employ high level of redundancy. Dynamic redundancy employed in FEW system can realize complex fault and error diagnosis, recovery and reconfiguration. It is very difficult to analyze the reliability of the FEW system by traditional methods, such as Fault Tree Analysis (FTA) or Networ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Telemaintenance applications for the WearableTMPC

    Publication Year: 1996, Page(s):407 - 413
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    This paper explores the concept of providing military maintenance personnel with a wearable personal computer and interactive electronic technical manual (IETM) support as maintenance tasks are performed at equipment sites. Wearable PCs, when combined with PCMCIA card technologies, are an evolutionary hardware concept worn on the technician's body, enabling personnel to obtain information such as ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A description of the software element of the NASA EME flight tests

    Publication Year: 1996, Page(s):457 - 463
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    In support of NASA's Fly-By-Light/Power-By-Wire (FBL/PBW) program, a series of flight tests were conducted by NASA Langley Research Center in February, 1995. The NASA Boeing 757 was flown past known RF transmitters to measure both external and internal radiated fields. The aircraft was instrumented with strategically located sensors for acquiring data on shielding effectiveness and internal coupli... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Susceptibility of GNSS sensors to RFI

    Publication Year: 1996, Page(s):273 - 278
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    A derivation from basic principles is presented of GLONASS receiver in-band susceptibility levels suitable for Category I approach use. The derived limits are -113.5 dBm for interference bandwidths less than 500 kHz and -110.5 dBm/MHz for greater than 500 kHz. The limits are more stringent at the wide and narrow bandwidth extremes than the existing ARINC standard. Also derived are wide and narrow ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • US Army digitization and open architectures for avionics

    Publication Year: 1996, Page(s):199 - 204
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB)

    There are key technology and acquisition issues of prime importance to the US Army as it develops plans to provision warfighters with capabilities that harness computing power to enhance combat power in the next century. This harnessing of computing power is the crux of the Army's “digitization” efforts. A critical component of this “digitization” provisioning will be a dep... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Characterization of the electromagnetic environment in aircraft cavities excited by internal and external sources

    Publication Year: 1996, Page(s):327 - 332
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    In order to design, assess, and certify the performance of avionics systems, among other parameters, one must be able to characterize the radiative environment in which the system will operate. The intrinsic variability of the problem of characterizing the electromagnetic environment in aircraft cavities suggests the desirability of an approach which could statistically bound the environment in te... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Determining the feasibility of a flight profile in a Free Flight environment

    Publication Year: 1996, Page(s):81 - 86
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    This paper examines the subject of conflict detection for multiple aircraft in a Free Flight environment. Determining the feasibility of an aircraft's flight profile will be a vital part of Free Flight (both pre-departure and enroute). Ensuring that a proposed flight profile will not cause potential conflicts with other aircraft in the airspace during the given time period is and will continue to ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The incorporation of fibre channel and scalable coherent interface technologies in avionics systems

    Publication Year: 1996, Page(s):365 - 372
    Cited by:  Papers (2)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (700 KB)

    New and emerging combat aircraft, especially those with sophisticated surveillance and multi-spectral capabilities, acquire and need to move and process data at enormous data rates. Avionics architectures have evolved over time to adapt to these demanding data acquisition, data movement, data processing, and data storage requirements. The trend has been from dedicated, through federated, to distri... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Trials and tribulation of implementing intranet technology: the Cassini Information Access System

    Publication Year: 1996, Page(s):11 - 15
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    The Cassini Information Access System (IAS) was built to provide Cassini Integration and Test engineers with ready access to current technical and logistical project information. World Wide Web (WWW) technology was used to provide a consistent user interface to pre-existing interactive systems as well as new repositories and interactive services developed specifically for Cassini. A Web “gat... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • SAE AS4893 Generic Open Architecture (GOA) framework

    Publication Year: 1996, Page(s):217 - 222
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    The generic open architecture (GOA) framework is a Society of Automotive (SAE) Avionics Systems Division standard, SAE AS4893. The GOA framework was developed as a framework for discussing open systems architecture and for identifying critical components and interfaces. The GOA framework is being used as a framework within the avionics community for developing a preferred set of interface standard... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Helicopters, simulators, and training

    Publication Year: 1996, Page(s):387 - 391
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Although there are many commonalties between fixed-wing and rotary-wing aircraft, both in terms of their performance and the missions they fly, their extensive differences demand that we recognize the training requirements that are unique to rotary-wing vehicles. In addition, the rotary-wing industry is made up of many widely distributed small operators whose training needs and logistics vary wide... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Legacy software reengineering technology

    Publication Year: 1996, Page(s):25 - 30
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB)

    The United States Air Force's Wright Laboratory and TASC are continuing to develop an environment for reengineering software from one language to another. Our approach engineers a program in the new language by reusing portions of the original implementation and design. This article summarizes our reengineering process model, describes the existing FORTRAN-to-Ada reengineering technology that we d... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Fault/failure analysis of the Tandem NonStop-UX operating system

    Publication Year: 1996, Page(s):491 - 497
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (564 KB)

    This paper presents the results of an analyse's of failures in several releases of Tandem's NonStop-UX operating system. NonStop-UX is based on UNIX System V. The analysis covers software failures from the field and failures reported by Tandem's test center. Faults are classified based on the status of the reported failures, the locations of the code that detected the problems, the panic messages ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Affordable reliable packaging technologies for avionics systems of the coming era

    Publication Year: 1996, Page(s):423 - 431
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Lower cost, reliable military avionics systems can be realized by leveraging key enabling packaging technologies from the commercial electronics industry. This includes the technologies and corresponding infrastructures which are arising in response to the Consumer Portable Electronics COTS market. This paper argues that innovative use of emerging commercial packaging technologies will be required... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.