Position Location and Navigation Symposium, 1996., IEEE 1996

22-25 April 1996

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Displaying Results 1 - 25 of 103
  • Proceedings of Position, Location and Navigation Symposium - PLANS '96

    Publication Year: 1996
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    Freely Available from IEEE
  • An optimized fast ambiguity search method for ambiguity resolution on the fly

    Publication Year: 1996, Page(s):246 - 253
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (564 KB)

    Numerous ambiguity search algorithms have been proposed over the last several years and the required computational time for the search has been significantly reduced. In this paper, an optimized ambiguity search method is described. The method has incorporated several existing fast ambiguity search concepts and therefore the ambiguity search speed can be further improved. In addition to the improv... View full abstract»

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  • Weapon IMU transfer alignment using aircraft position from actual flight tests

    Publication Year: 1996, Page(s):328 - 335
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (584 KB)

    This paper presents results from a study of weapon inertial measurement unit (IMU) transfer alignment using the aircraft's navigation system position data. The alignment process consists of first establishing a navigation solution (position, velocity and attitude) using the raw IMU outputs, then via a Kalman filter algorithm estimate errors in the weapon navigation data using aircraft navigation s... View full abstract»

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  • Using the matrix exponential solution to the direction cosine differential equation

    Publication Year: 1996, Page(s):626 - 630
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (344 KB)

    Most computation schemes for navigator updates assume constant rotation rates for each update interval. Given this, the matrix exponential approach is a possible solution. It becomes advantageous over the quaternion approach when one needs to calculate averaged direction cosine values, averaged linear with time values, etc., over an update interval. This allows easy computation of high order Corio... View full abstract»

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  • Development of the European radio navigation plan

    Publication Year: 1996, Page(s):241 - 245
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (392 KB)

    The European Union is developing a European Radionavigation Plan (ERNP) using an international team of experts. The ERNP will help to enhance safety, promote efficient transportation services, and environmental protection. To achieve this, the team of experts are determining the present and anticipated user requirements for all major segments of transport (air, sea, inland waterways, railroads, an... View full abstract»

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  • New approach to coarse alignment

    Publication Year: 1996, Page(s):324 - 327
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (216 KB)

    Two different methods for coarse alignment are discussed. One of them (direct method) utilizes both accelerometers and gyros output for continuously tracking attitude estimation while the other (gyrocompassing) utilizes gyro outputs for continuously tracking attitude system and accelerometers for attitude estimation. The standard approach is gyrocompassing in spite of the fact that it is not alway... View full abstract»

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  • Tightly coupled IFOG-based GGP implementation and field test results

    Publication Year: 1996, Page(s):213 - 221
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1156 KB)

    Four (4) meters SEP (spherical error probable) in an integrated GPS/inertial mode and 10 meters error growth after 5 minutes without GPS reception were achieved with an interferometric fibre optic gyro (IFOG)-based GPS guidance package (GGP) under harsh field conditions. The 295 cubic inch, 14 pound Phase 1 GGP systems were evaluated under controlled laboratory conditions and during van testing, a... View full abstract»

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  • Effects of local ionospheric anomalies on navigation performance and integrity using WAAS

    Publication Year: 1996, Page(s):574 - 581
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (696 KB)

    Ionospheric delay is probably the most serious error source for the Wide Area Augmentation System (WAAS). Recent research demonstrates that under normal conditions, user ionosphere ranging errors are acceptable. However, local anomalies within the coarse surface fit provided by the WAAS ionospheric grid may pose a significant threat to user integrity. To study this problem, covariance simulation i... View full abstract»

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  • Results of demonstrating the GPS guidance package integrated in an army fire support team vehicle

    Publication Year: 1996, Page(s):407 - 414
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (752 KB)

    This paper presents the results of a joint demonstration of an advanced navigation set conducted by the Advanced Research Projects Agency (ARPA) and the US Army Missile Command (MICOM). The Global Positioning System (GPS) guidance package (GGP) tightly couples a miniature GPS receiver (MGR) and a miniature inertial measurement unit (MIMU). The MIMU features a triad of navigation-grade interferomet... View full abstract»

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  • Multiscale estimation of the ionospheric effect from single frequency GPS receiver data

    Publication Year: 1996, Page(s):620 - 625
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (384 KB)

    In this paper, a multiscale dynamic model for the ionospheric effect is formulated for single-frequency receivers, and a multiscale estimation algorithm is used to obtain an optimal estimate of the ionospheric effect. Multiscale stochastic modeling is based on scale-recursive dynamics which is defined on a coarse-to-fine scale dyadic tree. Such an approach may have some advantages for the problem ... View full abstract»

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  • Concept design for a low cost cockpit display/collision avoidance system for general aviation aircraft

    Publication Year: 1996, Page(s):352 - 359
    Cited by:  Papers (3)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (572 KB)

    DCS Corporation has developed a concept for a low cost cockpit display system to provide situations awareness and collision avoidance capabilities to the general aviation (GA) community. The GA community has the desire for an autonomous air traffic management system that will notify aircraft of possible conflicts and provide resolutions for deconfliction without relying on ground stations for air ... View full abstract»

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  • Performance assessment of automatic vehicle location (AVL) systems

    Publication Year: 1996, Page(s):235 - 240
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (572 KB)

    The Federal Transit Administration (FTA) considers computer aided dispatch and automatic vehicle location (CAD/AVL) systems to be an important element of their advanced public transportation systems (APTS) program. In 1992 the Denver Regional Transportation District contracted with the Westinghouse Company (now TMSI) to equip their fleet of over 800 buses with AVL, using the Global Positioning Sys... View full abstract»

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  • High performance silicon accelerometers with charge controlled rebalance electronics

    Publication Year: 1996, Page(s):27 - 30
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (612 KB)

    A charge-controlled, force rebalanced accelerometer loop is described, along with its advantages over prior voltage-controlled forcing methods. First generation silicon accelerometers incorporating charge-controlled electronics are performing well in current production systems. A new all silicon accelerometer chip is being developed for higher accuracy applications View full abstract»

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  • Civil aviation's global necessity beyond GPS-based systems-IGSANS

    Publication Year: 1996, Page(s):315 - 323
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (952 KB)

    Developments are in progress toward utilizing GPS for global ATC surveillance and landing guidance. However, although these GPS-based systems offer major advantages over existing systems, there are critical shortcomings including integrity, availability, continuity and security which cannot be practically solved with GPS/GNSS-based systems. Recognition of this fact is necessary now so that plannin... View full abstract»

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  • An open software architecture in a DoD standard GPS receiver

    Publication Year: 1996, Page(s):205 - 212
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (712 KB)

    This paper describes an open system software architecture-specifically, the one that would allow the installation of additional operational capability without modifying existing software components-that the DoD easily could introduce into its miniature airborne GPS receiver (MAGR), making capability upgrades simpler, cheaper, and therefore more timely. It describes the existing architecture, ident... View full abstract»

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  • ECTOS-reusable software for navigation, guidance and control applications

    Publication Year: 1996, Page(s):567 - 573
    Cited by:  Papers (1)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (852 KB)

    Honeywell has developed the Embedded Computer Toolbox and Operating System (ECTOS), a reusable software approach for design and development of applications for use in aircraft navigation systems, land-based navigation systems, and navigation, guidance, and control of unmanned air vehicles (UAVs), missiles, standoff weapons, and munitions. ECTOS provides the user with a custom Ada run-time system, ... View full abstract»

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  • Integration and testing of a low-cost land navigator for the army combined arms weapon system (TACAWS)

    Publication Year: 1996, Page(s):399 - 406
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (728 KB)

    The army combined arms weapon system (TACAWS) is currently being developed as a technology demonstration program at the US Army Missile Command (MICOM) located at Redstone Arsenal, AL. The thrust behind the development of TACAWS is to provide the 21st century Army a multi-purpose, multi-target, and multi-platform weapon system that can be easily deployed to any location in the world. The TACAWS la... View full abstract»

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  • Database concept for static navigational information

    Publication Year: 1996, Page(s):96 - 102
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (928 KB)

    When ships are under way and before leaving ports, their captains and officers (ship navigators) accumulate all sorts of navigational information necessary for safe and efficient ship handling. The navigational information is divided into two categories. One is `dynamic navigational information' and the other is `static navigational information'. The former is real-time information about ships and... View full abstract»

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  • Design and test of a synergistic interferometric GPS-INS

    Publication Year: 1996, Page(s):612 - 619
    Cited by:  Papers (1)  |  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (780 KB)

    Interferometric GPS is a technique which employs measurements of carrier phase difference to provide highly accurate relative position measurements. Interferometric GPS uses the measurements at multiple antennae mounted on rigid baselines to provide orientation information. While GPS provides measurements which are stable over the long term, these measurements have relatively low bandwidth with re... View full abstract»

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  • A cosmetic method for ameliorating multipath effects on the ILS localizer

    Publication Year: 1996, Page(s):342 - 351
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (708 KB)

    The localizer is that portion of the contemporary instrument landing system which provides lateral guidance to the pilot during his approach to landing. It is especially plagued by the multipath problem because airports encourage the construction of large hangars to allow servicing their aircraft customers. Large hangar and terminal-building walls common at many important airports frequently end u... View full abstract»

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  • Integrated automatic vehicle location systems

    Publication Year: 1996, Page(s):230 - 234
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (520 KB)

    The state of the art transportation management system integrates automatic vehicle location, in-vehicle systems, customer information networks and management information systems. As advanced technologies are integrated into transportation systems, the transit system becomes more efficient and reliable, which in turn makes it more attractive to users. Transit agencies are using automatic vehicle lo... View full abstract»

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  • ITS navigation software

    Publication Year: 1996, Page(s):422 - 425
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (396 KB)

    The purpose of this paper is to examine the state of software developments and technology in the intelligent transportation system (ITS) and vehicle navigation market. Topics include: route guidance, user safety, in-vehicle ergonomics issues, voice interaction and technical requirements for a real in-vehicle navigation system. The success of the current push of ITS related traveller technologies i... View full abstract»

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  • Precision farming from Rockwell

    Publication Year: 1996, Page(s):1 - 5
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (452 KB)

    The Rockwell Vision System is the most advanced, integrated crop management and analysis tool available on the market today. This system includes software and hardware that utilizes differential Global Positioning System (GPS) to capture field data, including yield, crop moisture, topography, soil type, soil chemistry, and weed infestation (up to 256 layers of data). As a result, the farmer can se... View full abstract»

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  • A comparison of American and British Raster Nautical Chart Systems

    Publication Year: 1996, Page(s):114 - 120
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (836 KB)

    The U.S. National Oceanic and Atmospheric Administration (NOAA) and the British Admiralty (BA) have both recently embarked upon the production of computerized Raster Nautical Charts. NOAA has commenced production of Raster Nautical Chart Images (RNCI), and has signed a Cooperative Research and Development Agreement (CRADA) with a partnership named BSB Electronic Charts (BSB), which offers the char... View full abstract»

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  • Precise positioning of blasthole drills and mining shovels using GPS

    Publication Year: 1996, Page(s):10 - 14
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (760 KB)

    AQUILA Mining Systems Ltd. is a Canadian company that designs and develops monitoring, control and navigation systems for the surface and underground mining industries. In 1992, AQUILA Mining Systems began the development of technology for monitoring, controlling and positioning mobile mining equipment. In 1993, AQUILA completed its first field test with GPS receivers onboard a blasthole drill, an... View full abstract»

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