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20th DASC. 20th Digital Avionics Systems Conference (Cat. No.01CH37219)

14-18 Oct. 2001

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  • The 20th Digital Avionics Systems Conference [front matter]

    Publication Year: 2001, Page(s):i - x
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  • Automated model analysis and test generation for flight guidance mode logic

    Publication Year: 2001, Page(s):9B3/1 - 9B3/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (865 KB) | HTML iconHTML

    Incomplete, ambiguous, or rapidly changing requirements can have a profound impact on the quality and cost of software development. In an effort to provide a more rigorous approach to flight-critical system development, Rockwell Collins used a formal specification modeling approach to develop the mode control logic of a Flight Guidance System (FGS) for a General Aviation class aircraft Rockwell Co... View full abstract»

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  • The use of product line based checkout systems for payload processing

    Publication Year: 2001, Page(s):8A4/1 - 8A4/11 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (833 KB) | HTML iconHTML

    Launching payloads into space continues to be a weekly occurrence around the world. Although it is becoming commonplace, it has not become a low-cost or low-risk, quick and simple process. Due to these conditions, concepts have been developed and efforts are underway to create a generic set of processes and tools that will advance payload processing into the 21st Century, making it more... View full abstract»

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  • An integrated test approach for avionics system development

    Publication Year: 2001, Page(s):9B2/1 - 9B2/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (727 KB) | HTML iconHTML

    Test and verification represents a significant portion of avionics software development cost. A key to achieving efficient avionics software verification is close coordination between the system and software teams. When the verification tasks are coordinated, it improves the quality and efficiency of the verification effort by: removing redundant tests without compromising the integrity of the ove... View full abstract»

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  • Migration of technology between US Army aviation and ground systems

    Publication Year: 2001, Page(s):9A3/1 - 9A3/8 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (549 KB) | HTML iconHTML

    In October 1999, at the Annual convention of the Association of the United States Army (AUSA), the Chief of Staff of the Army unveiled his vision to transform the US Army into a smaller and lighter, yet more lethal and deployable force. Some of the implied objectives to achieve this goal are to create systems that utilize common components, reduce the size and weight of components, standardize con... View full abstract»

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  • An auxiliary communication loop for air transport surveillance using GSM/GPRS

    Publication Year: 2001, Page(s):7C5/1 - 7C5/11 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (823 KB) | HTML iconHTML

    This paper presents the design and implementation of an automatic dependent surveillance (ADS) using mobile communication. Mobile communications of GSM and GPRS are considered. The GSM/GPRS in time division multi-access (TDMA) is adopted as data communication infrastructure to transmit surveillance and control data. A communication protocol is established to enhance surveillance data link at low a... View full abstract»

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  • Using the architecture description language MetaH for designing and prototyping an embedded spacecraft attitude control system

    Publication Year: 2001, Page(s):8E3/1 - 8E3/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (632 KB) | HTML iconHTML

    Utilizes an integrated tool set consisting of the domain specific language Simulink, the BEACON code generator, and the architecture description language MetaH to prototype a new, embedded, decoupling, sliding mode controller for spacecraft attitude tracking maneuvers and regulation. Sliding mode controller design consists of two steps. First, a suitable hypersurface is selected such that linear t... View full abstract»

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  • Variable Speed Control Moment Gyroscope Workbench: a new simulation tool for tomorrow's spacecraft

    Publication Year: 2001, Page(s):8A3/1 - 8A3/12 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (787 KB) | HTML iconHTML

    This paper describes the Variable Speed Control Moment Gyroscope (VSCMG) Workbench, a simulation software tool developed at Georgia Tech. This program will provide the Air Force Research Laboratory (AFRL) with a tool for studying spacecraft control system design for vehicles equipped with VSCMG actuators for combined attitude control and energy storage View full abstract»

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  • Modeling and simulation of VDL Mode 3 subnetwork in the en route and terminal domains

    Publication Year: 2001, Page(s):7A3/1 - 7A3/10 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1690 KB) | HTML iconHTML

    Presents the recent modeling and simulation of the International Civil Aviation Organization (ICAO) very high frequency (VHF) digital link (VDL) Mode 3 subnetwork in an Aeronautical Telecommunication Network (ATN) environment for the en route and terminal domains. This was conducted to study the performance of this subnetwork under various aircraft and application traffic loading conditions. Impor... View full abstract»

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  • The design of a cockpit display of traffic information (CDTI) for longitudinal station keeping

    Publication Year: 2001, Page(s):7B4/1 - 7B4/10 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (742 KB) | HTML iconHTML

    Station keeping is a promising way to increase capacity of the air navigation system in the near future. The delegation of responsibilities from the controller to the crew has important consequences for the flight deck human machine interface. This paper presents the first stage of research conducted at Delft University of Technology in co-operation with the EUROCONTROL Experimental Center concern... View full abstract»

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  • Robotic technology integration for Army ground vehicles

    Publication Year: 2001, Page(s):9B1/1 - 9B1/8 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB) | HTML iconHTML

    This paper will discuss the U.S. Army Tank-Automotive Research, Development and Engineering Center's (TARDEC's) four (4) axis strategy for integration of robotics into the legacy, interim and objective forces. At the cornerstone of this strategy is the R&D effort concentrating on autonomous perception and navigation, intelligent tactical behavior, command and control, and man-robot interface e... View full abstract»

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  • Feasibility of modernizing F-15 avionics using an open systems approach

    Publication Year: 2001, Page(s):9A2/1 - 9A2/7 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (505 KB) | HTML iconHTML

    In this paper we have described our investigation into applying an open systems approach to upgrading the avionics subsystems on the F-15 A-D aircraft, looking specifically at the central computer, the programmable signal data processor, and the head up display signal data processor. Where possible, we evaluated potential solutions by testing them in the F-15 Avionics Integration Support Facility ... View full abstract»

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  • Potential enhancements to the performance of ASDE radars derived from multistatic radar principles

    Publication Year: 2001, Page(s):7C4/1 - 7C4/16 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1290 KB) | HTML iconHTML

    Airport surface surveillance systems, such as airport surface detection equipment (ASDE) radars, are susceptible to multipath propagation and scattering effects that can result in the placement of false targets located at critical locations on airport surfaces such as runways and taxiways. Such false targets can readily compromise the performance of these radars and lead to highly undesirable cont... View full abstract»

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  • Performance of turbo-codes in an aeronautical satcom multipath environment

    Publication Year: 2001, Page(s):8E2/1 - 8E2/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (618 KB) | HTML iconHTML

    So-called "turbo codes" currently represent one of the most active areas of research in coding theory. Turbo codes have performance that approaches the Shannon limit on the capacity of a bandlimited communications channel. Previously, we discussed applications of turbo codes to aeronautical satellite communications in general, and presented results for an additive white Gaussian noise environment.... View full abstract»

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  • Capacity enhancements in IMC for converging configurations with down-link of aircraft expected final approach speeds

    Publication Year: 2001, Page(s):7E7/1 - 7E7/13 vol.2
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (951 KB) | HTML iconHTML

    This paper describes procedures for facilitating increased airport capacity in instrument meteorological conditions for airports with converging and triple converging runway configurations. The concept utilizes existing standards and procedures authorized for dependent converging approaches. It proposes control of the relative approach spacing on two and three runway converging configurations and ... View full abstract»

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  • Effects of turbulence on laser beam position

    Publication Year: 2001, Page(s):8A2/1 - 8A2/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    If a laser beam travels through a medium with constant refractive index, then the travel path will be a straight line from source to receiver. If the medium does not have a constant refractive index, then the beam will be diffracted. The lower atmosphere represents this latter case since temperature gradients near the Earth's surface generate turbulence that results in random fluctuation in the re... View full abstract»

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  • Spacecraft and instrument Level-0 command and data handling subsystem

    Publication Year: 2001, Page(s):8D5/1 - 8D5/10 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB) | HTML iconHTML

    A Level-0 processor is a low-level command processor intended to control the spacecraft whenever the main processor is off-line. Such an event can happen during early orbit activities, during load shedding operations or during an anomaly (like the upset of the main processor due to cosmic radiation). During these periods, the safe mode processor collects a subset of normal housekeeping telemetry, ... View full abstract»

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  • Re-usable launch vehicles based on high velocity mass capture

    Publication Year: 2001, Page(s):8B4/1 - 8B4/8 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (481 KB) | HTML iconHTML

    High velocity mass capture launch operates by transferring momentum from a stream of mass originating outside Earth's gravity well to a launch vehicle. The incoming mass stream has velocity of approximately 11 Km/second. An estimated 4 tons of mass is deployed into the incoming mass stream per ton of mass launched into near earth orbit. A re-usable launch vehicle reaches high altitude, deploys int... View full abstract»

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  • Radiation hardened PowerPC 603eTM based single board computer

    Publication Year: 2001, Page(s):8C1/1 - 8C1/12 vol.2
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1063 KB) | HTML iconHTML

    Honeywell is developing a product line of standard electronics boards for on-orbit payload processing applications. This product line is based on commercial standards for instruction sets, form factors, back plane busses, I/O and software tools. This architecture is based on a data flow model. The radiation hardened, Single Board Computer (SBC) is based on PowerPC 603eTM technology lice... View full abstract»

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  • Secure aircraft communications addressing and reporting system (ACARS)

    Publication Year: 2001, Page(s):7A2/1 - 7A2/11 vol.2
    Cited by:  Papers (2)  |  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (828 KB) | HTML iconHTML

    With the increase in automation, airlines, military, and civil aviation organizations are relying on ACARS for air traffic and operational control. This paper proposes specific techniques to relieve ACARS frequency saturation using standard data compression algorithm. Additional solutions are provided to encrypt the ACARS protocol header without requiring any changes to the legacy ACARS equipment.... View full abstract»

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  • Agate avionics usability survey

    Publication Year: 2001, Page(s):6C1/1 - 6C1/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1508 KB) | HTML iconHTML

    This paper reports the results of a survey that was administered to 127 participants at the EAA AirVenture air show in Oshkosh, Wisconsin in August 2000. The survey asked participants to provide feedback regarding the functionality and usability of a set of advanced avionics for general aviation aircraft. Administration of the survey occurred immediately after each participant had received instruc... View full abstract»

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  • Application of distributed artificial intelligence in autonomous aircraft operations

    Publication Year: 2001, Page(s):7B3/1 - 7B3/14 vol.2
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (994 KB) | HTML iconHTML

    Outlines the study of the application of distributed artificial intelligence (DAI) concepts and techniques in the development of algorithms and operational methods to support flight crew decision-aids for airborne separation assurance in autonomous aircraft operations (AAO). In the future envisaged for air traffic management (ATM), autonomous aircraft operations will be allowed in specifically all... View full abstract»

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  • Combined visual and textual programming methodology for signal-based automatic avionics testing systems

    Publication Year: 2001, Page(s):9A5/1 - 9A5/10 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (999 KB) | HTML iconHTML

    The present paper investigates the programming paradigms currently used in test and measurement applications, comparing the features of textual and visual languages. Based on this analysis, the paper proposes a combined programming methodology, with visual languages being used for diagnosis, while both textual and visual languages are supported for implementing test and instrument control function... View full abstract»

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  • Global air traffic management (GATM) requirements for military rotary-wing aircraft

    Publication Year: 2001, Page(s):7D1/1 - 7D1/9 vol.2
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (641 KB) | HTML iconHTML

    To help cope with the ever increasing demand for air travel, Civil Aviation Authorities (CAA), along with the Air Transportation Industry have established programs that restructure airspace and mandate the carriage of addition equipment to allow aircraft to more effectively use airspace. These initiatives are known as Communication, Navigation, Surveillance, Air Traffic Management (CNS/ATM) to the... View full abstract»

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  • Caught in the middle, between a rock and a hard place [avionics middleware]

    Publication Year: 2001, Page(s):9A1/1 - 9A1/12 vol.2
    Cited by:  Papers (1)
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    Demonstrates the effectiveness of COTS based middleware. The advanced software execution platform (ASEP) is built upon COTS real-time operating systems (RTOS) which support the POSIX real-time extensions. The baseline ASEP along with transition of these "experimental concepts" have found their way into designs on the joint strike fighter mission systems as well as other advanced F-16 variants. Ind... View full abstract»

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