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Digital Avionics Systems Conference, 1993. 12th DASC., AIAA/IEEE

Date 25-28 Oct. 1993

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Displaying Results 1 - 25 of 78
  • Proceedings of 1993 IEEE.AIAA 12th Digital Avionics Systems Conference

    Publication Year: 1993
    Request permission for commercial reuse | PDF file iconPDF (330 KB)
    Freely Available from IEEE
  • Current trends and practices in ramp testing of digital avionics systems

    Publication Year: 1993, Page(s):388 - 393
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    This paper describes the current state of ramp testing mode-S, TCAS and other avionics systems. The paper discusses the advantages and disadvantages of ramp testing and some of the problems associated with testing radio-based systems View full abstract»

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  • Airport surface collision warning system implementation

    Publication Year: 1993, Page(s):425 - 429
    Cited by:  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    The Airport Movement Area Safety System (AMASS) is a ground traffic control advisory system. It tracks aircraft and other surface targets using data from two available sensors; the airport surface radar, and the terminal surveillance radar. The system stores an adaptive data base that defines the airport geography and traffic rules. AMASS algorithms use the airport configuration data base and airc... View full abstract»

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  • A practical objected-oriented approach for distributed real-time simulation

    Publication Year: 1993, Page(s):135 - 140
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    Under sponsorship of the Embedded Computer Resources Support Improvement Program (ESIP), the Avionics Logistics Branch of the Wright Laboratory (WL/AAAF) undertook research to reduce the cost and improve the performance of systems used for support and test of embedded avionics software. These systems are characterized by real-time simulation of avionics stimulus signals coupled with real-time data... View full abstract»

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  • Advanced graphics processor

    Publication Year: 1993, Page(s):394 - 399
    Cited by:  Papers (3)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    This paper describes cockpit display processor research and development being conducted at the Wright Laboratory. The objective is a compact, high performance, cockpit avionic display generator. The resulting system will generate 1.5 million triangles per second and manipulate high resolution video. The design is based on a pipeline of custom VLSI geometry processors and smart memory. The applicat... View full abstract»

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  • Architecture evaluation through the use of simulation environment benchmarking

    Publication Year: 1993, Page(s):49 - 53
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    The changing Navy needs of future aircraft combined with a decline in the Department of Defense budget has increased the need for the employment of open system architectures that can be readily upgraded as technology evolves. It therefore becomes necessary to evaluate how new technology fits into the framework of an open architecture system. A methodology for architecture assessment has been devel... View full abstract»

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  • A multi-sensor approach to airport surface traffic tracking

    Publication Year: 1993, Page(s):430 - 432
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    A dual sensor system using a large number of inexpensive short range sensors can act as a valuable adjunct to surface surveillance radars, as well as provide a low cost tracking system for non-radar equipped airports. A measurement program was conducted to collect data on magnetic and infrared signatures of aircraft and other vehicles on airport surfaces. The data indicates that short range sensor... View full abstract»

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  • FINDER, a system providing complex decision support for commercial transport replanning operations

    Publication Year: 1993, Page(s):141 - 146
    Cited by:  Patents (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Decision-aid systems, likely to appear in future aircraft generations, could play a central role in the cockpit thanks to the broad spectrum of functionalities and decision support facilities they will offer to the crew. As part of such systems, the exploratory FINDER mockup is a knowledge-based system (KBS) designed to help crew members continually optimize their flight plan by suggesting solutio... View full abstract»

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  • Microwave induced upset of a digital flight control computer

    Publication Year: 1993, Page(s):173 - 178
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    Tests have established upset levels for a set of digital flight control computers exposed to microwave radiation. Upsets occur for unprotected computers above 10 W/cm2 peak power over narrow frequency bands. The frequency range of upsets were from 1 to 4 GHz, no upsets were seen above these frequencies due to increased attenuation from circuit elements. Most vulnerable frequencies are a... View full abstract»

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  • Practical applications of modern controls for booster autopilot design

    Publication Year: 1993, Page(s):400 - 412
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    This paper presents an evaluation of three of the most promising optimal control techniques for use in launch vehicle autopilot design. The methods evaluated are the EASY5 parameter optimizer, H∞, and SANDY/H2. Both the EASY5 parameter optimizer and SANDY/H2 are commercially available software packages based on constrained optimization. Recent advances in the applicatio... View full abstract»

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  • Sensor management

    Publication Year: 1993, Page(s):32 - 37
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    In the next century, tactical air warfare will demand that fighter aircraft fly more sorties per day from austere or remote locations around the world with little or no logistics or maintenance support. To meet this demand, avionics must have greater functionality, adaptability, reliability and availability. The Air Force Pave PACE program, which began in 1990, is defining and developing the next ... View full abstract»

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  • Wavelets-a new tool for signal processing analysts

    Publication Year: 1993, Page(s):54 - 59
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (460 KB)

    This paper provides a brief introduction to “Wavelets”, and describes some of their basic characteristics. It then describes some general wavelet features that can be exploited, supplementing traditional signal analysis techniques. These features are just a few underlying reasons why wavelets are becoming an exciting new tool for signal processing analysts. In some cases “Wavelet... View full abstract»

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  • Using software document evaluations to enhance software supportability

    Publication Year: 1993, Page(s):433 - 438
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    A study has been conducted to help increase the supportability of software for complex systems, specifically, for the F-22 aircraft. The aim of the study was to identify areas of risk to software support, to develop methods to reduce that risk, and to identify metrics that would provide a strong indication of software supportability during development and after deployment. This paper provides an o... View full abstract»

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  • A new adjudicator for fault tolerant software applications correctly resulting in multiple solutions

    Publication Year: 1993, Page(s):147 - 152
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    The creation of a decision mechanism that can handle Multiple Correct Results (MCR) (resulting from causes other than finite-precision arithmetic) has primarily been an unexplored research area. The lack of means to handle and/or avoid the MCR problem is one of the limiting factors in the practical and effective use of N-Version Programming (NVP) and other software fault tolerance techniques. MCR ... View full abstract»

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  • Preliminary requirements for satellite based automatic dependent surveillance (ADS)

    Publication Year: 1993, Page(s):209 - 214
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    This paper discusses several key requirements pertinent to the use of satellite based automatic dependent surveillance (ADS) techniques in domestic U.S. airspace. The key requirements addressed in this paper are data latency and functional availability. As background, a brief description is presented of three methods of providing the aircraft surveillance function: primary radar, secondary radar, ... View full abstract»

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  • Warning system concepts to prevent controlled flight into terrain (CFIT)

    Publication Year: 1993, Page(s):463 - 468
    Cited by:  Patents (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    Terrain Following Radar (TFR) systems have employed techniques for avoiding collision with terrain and man-made obstacles since their inception over twenty years ago. Evolutionary advances in terrain following technology have produced the Covert Penetration System (CPS), which combines information from the forward looking radar with a digital map to enhance the capabilities of the TF component and... View full abstract»

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  • Microwave induced upset of digital flight control systems

    Publication Year: 1993, Page(s):179 - 184
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Recent tests of flight control system components show that digital flight control systems are vulnerable to microwave signals, but only at very high power levels, well above that produced by commercial radar installations. Test results of sensors, computers, data busses, and actuators reveal that long standing fears of inherent fly-by-wire flight control system vulnerability to microwave radiation... View full abstract»

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  • From data to information: data reduction for operator workload management

    Publication Year: 1993, Page(s):75 - 80
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Modern multi-mission naval aircraft must operate in increasingly complex mission environments with potentially large numbers of air, surface, and undersea contacts. While operating under strict rules of engagement, the operators of the aircraft must be able to readily sort through the considerable volume of data to locate and suitably interact with the contacts of interest interspersed in the envi... View full abstract»

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  • Photonics technology for avionic systems

    Publication Year: 1993, Page(s):349 - 356
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    Over the last several years, it has become widely recognized that electromagnetic interference (EMI), electromagnetic pulse (EMP), high-intensity radio frequency (HIRF), and new threats, such as directed-energy weapons, can jeopardize the flight safety of vehicles equipped with fly-by-wire (FBW) systems, unless adequate shielding precautions are taken. This leads to weight penalties which can be a... View full abstract»

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  • A summary of spacecraft avionics functions

    Publication Year: 1993, Page(s):413 - 418
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (724 KB)

    Avionics systems perform many of the core functions of a spacecraft. Currently, these functions are performed by digital avionics. The functions performed by avionics can be divided into two groups: spacecraft information system functions and spacecraft avionics supported functions. The information system functions perform the formatting, transportation, or processing on the commands, telemetry, a... View full abstract»

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  • The reliable optical card-edge connector (ROC)

    Publication Year: 1993, Page(s):124 - 128
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    Fiber optic networks have long been touted for their high bandwidth and excellent noise immunity. However, efforts to introduce photonic networks into avionic systems have been less than successful due to design, reliability, and maintainability problems. Many of these problems have been traced to particulate contamination and failure under severe environmental conditions. Since the F-22, RAH-66, ... View full abstract»

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  • Ultra-reliable digital avionics

    Publication Year: 1993, Page(s):38 - 42
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In the future, tactical fighters will be required to operate from austere bases in third world mission scenarios, away from CONUS and alternate basing. Thus, these aircraft must be able to perform multi-role missions with limited sparing capabilities and very fast turn-around time for maintenance. Since an aircraft's engines and airframe are fixed, modular avionics is the most affordable and flexi... View full abstract»

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  • Enhanced/synthetic vision for transport aircraft

    Publication Year: 1993, Page(s):21 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    A number of technologies are being evaluated and further developed to provide very capable and flexible aircraft terminal area and ground navigation systems which are largely independent of aircraft facilities. These include satellite based navigation, precision FMS, forward looking sensors, and digital map/terrain databases. This paper addresses the potential for integration of these technologies... View full abstract»

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  • A methodology for assessing high intensity RF effects in aircraft

    Publication Year: 1993, Page(s):451 - 456
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    Optical components have an inherent immunity to the electromagnetic interference (EMI) associated with High Intensity Radiated Fields (HIRF). The optical technology embodied in Fly-by-Light (FBL) might therefore minimize the effects of HIRF on digitally controlled systems while providing lifetime immunity to signal EMI. This is one of the primary motivations for developing FBL systems for aircraft... View full abstract»

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  • Pilot error in automated systems shown by altitude deviation reports

    Publication Year: 1993, Page(s):60 - 65
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    Over 8000 altitude deviations are reported to NASA's Aviation Safety Reporting System each year. This is almost one an hour. The narratives of pilot incidents relate how errors made in the automation-assisted altitude change task are caused by the difficulty pilots are having interacting with automatic systems. This paper discusses the impact of increased automation in glass-cockpit airliners on t... View full abstract»

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