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Position Location and Navigation Symposium, 1994., IEEE

Date 11-15 April 1994

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  • Proceedings of 1994 IEEE Position, Location and Navigation Symposium - PLANS'94

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (113 KB)
    Freely Available from IEEE
  • Initial rapid alignment/calibration of a marine inertial navigation system

    Publication Year: 1994, Page(s):348 - 354
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (373 KB)

    Generally, the conventional strapdown marine inertial navigation system needs about 4 hours to settle the initial alignment/calibration under motion. The paper presents an effective approach of the initial rapid alignment/calibration on a strapdown marine inertial navigation system with three fiber optic gyros and three conventional accelerometers. In this approach, a modified least square filter,... View full abstract»

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  • Errors of an inertial navigation unit caused by ring laser gyros errors

    Publication Year: 1994, Page(s):833 - 838
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (336 KB)

    A ring laser gyro (RLG) has proven its efficiency for the strapdown inertial navigation unit (INU) but RLG errors result in the vehicle's attitude errors and determine the accuracy of the entire INU. Therefore it is necessary to know the relationship between RLGs and INU errors that would give the opportunity to improve the attitude accuracy by calculating the compensation values. A strapdown INU ... View full abstract»

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  • Role of land navigation in a vehicular hazard warning system

    Publication Year: 1994, Page(s):502 - 511
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (988 KB)

    The In-Vehicle Safety Advisory and Warning System is a Federal Highway Administration program to develop a nationwide vehicular information system that provides drivers with advance, supplemental notification of dangerous road conditions using electronic warning zones with precise areas of coverage. The goal is to ameliorate the severity of scenarios which are particularly hazardous and have remai... View full abstract»

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  • The Prince William Sound automated dependent surveillance system

    Publication Year: 1994, Page(s):823 - 832
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (812 KB)

    The US Coast Guard is presently conducting a project in order to implement an automated dependent surveillance system (ADSS) in Prince William Sound (PWS), Alaska. The ADSS will expand the coverage area of the present vessel traffic service (VTS) by over 3000 square miles, provide all weather surveillance, and maintain well defined tracks for all participants. The ADSS will utilize differential GP... View full abstract»

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  • The next generation marine inertial navigator is here now

    Publication Year: 1994, Page(s):121 - 127
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The MARLIN (Marine Ring Laser Inertial Navigator) development program has matured into the MK 49 Ship's Inertial Navigation System (SINS). The MK 49 system is in full production with proven at-sea performance better than NATO SINS specifications. Production is currently underway for 56 NATO SINS systems for the navies of The Netherlands, Spain, and the United Kingdom and for 20 MK 49 Inertial Navi... View full abstract»

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  • Pointing grade fiber optic gyroscope

    Publication Year: 1994, Page(s):165 - 169
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Fiber optic gyroscopes (FOG) are solid-state rotation sensors that are appropriate for a wide variety of applications. In addition to becoming competitive with ring laser gyroscopes on new programs, FOGs are being manufactured to replace spinning wheel gyro technology in existing programs. The FOG brings with it the advantages of long life, high reliability, input axis stability, and low accelerat... View full abstract»

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  • Analysis of the use of digital road maps in vehicle navigation

    Publication Year: 1994, Page(s):494 - 501
    Cited by:  Papers (3)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    Digital road maps are being used increasingly throughout the world as they become more available. Five major digital road map suppliers are focusing their efforts on producing databases that support vehicle navigation functions. Of a total of 147 vehicle navigation systems in the world, 89 use in-vehicle maps, of which, 35 employ map matching, and 31 offer real-time route guidance. Vehicle navigat... View full abstract»

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  • Global positioning technology and applications

    Publication Year: 1994, Page(s):784 - 787
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    A unique benefit of satellite technology has been realised in global navigation, made possible through the emergence of the Global Positioning System (GPS). Many applications, unheard of during the evolution phase of the GPS, are now being realised. Another notable development has been in wide area mobile communication which has revolutionised a number of mobile operations. With the emergence of a... View full abstract»

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  • Integrated inertial network

    Publication Year: 1994, Page(s):439 - 446
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (692 KB)

    Advanced aircraft will require that inertial information be available continuously and deliver acceptable performance despite aircraft maneuvers, fuel burn off, changing stores configurations, and subsequent structural bending. A trade study was performed to evaluate architecture concepts against more traditional approaches which rely on dedicated sensors optimized for specific applications. The c... View full abstract»

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  • IMU noise evaluation for attitude determination and stabilization in ground and airborne applications

    Publication Year: 1994, Page(s):817 - 822
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    This paper reports on particular noise characteristics of selected ring laser gyro and dry tuned gyro inertial measurement units for use in ground and airborne system applications such as vehicle sensor stabilization, short term vehicle attitude measurements, vehicle camera stabilization, and synthetic aperture radar motion compensation View full abstract»

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  • FAA's DGPS CAT III feasibility program: update and test methodology

    Publication Year: 1994, Page(s):239 - 245
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The FAA has established a program to evaluate the technical feasibility of using guidance from the satellite-based Global Positioning System (GPS) for Category III (CAT III) precision approaches. A combination of flight tests, analyses and simulations will be used to evaluate differential GPS (DGPS) and associated monitoring techniques for CAT III application. Emphasis will be placed on meeting ac... View full abstract»

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  • An image ranging system at sea

    Publication Year: 1994, Page(s):113 - 120
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    In a current experimental automatic navigation system, the Automatic Radar Plotting Aids (ARPA) is a device to acquire navigational information about ships in radar visibility. The authors are developing image processing techniques for calculating the distance to a target ship based on processing scenery pictures, which have been originally obtained from visual images and used as navigational info... View full abstract»

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  • An error model for sensor simulation GPS and differential GPS

    Publication Year: 1994, Page(s):260 - 266
    Cited by:  Papers (20)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    This paper describes a software package that models various Global Positioning System (GPS) and differential GPS receiver configurations. The model produces position errors in a locally-level coordinate system. The errors are statistically based on the errors associated with pseudorange measurements. An orbital model of the GPS satellites simulates the effects of satellite geometry on the position... View full abstract»

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  • High performance GPS receiver for air launched munitions

    Publication Year: 1994, Page(s):159 - 164
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Performance requirements for air launched munitions differ from conventional GPS navigators. These receivers require rapid turn-on, signal acquisition and track in high anti-jam environments. Further, these receiver applications require minimal modification to the host vehicle. A candidate system implementation based on the results of the Operational Concept Demonstration (OCD) program is presente... View full abstract»

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  • Results from the PoSAT GPS experiment

    Publication Year: 1994, Page(s):598 - 604
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    The PoSAT-1 microsatellite, launched in September 1993, carries a GPS Navigation Unit as one of its experiments. The Navigation Unit consists of a GPS receiver, antenna and processing hardware. Using the Navigation Unit, the satellite will be able to directly self-track itself to a high degree of accuracy. The supporting software will enable the logging of experimental data, the synchronisation of... View full abstract»

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  • GPS and video data collection in Los Angeles County-a status report

    Publication Year: 1994, Page(s):388 - 393
    Cited by:  Patents (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    Starting August, 1993, aCIM Co has driven thousands of miles of Los Angeles county streets to develop maps and video images tied to those maps. The practical problems in the data collection effort, the change in thinking that have to accompany a new technology with great promise and the new uses that have appeared as video images, precisely located, become available will be addressed. The technolo... View full abstract»

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  • GPS signal availability in an urban area-receiver performance analysis

    Publication Year: 1994, Page(s):487 - 493
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB)

    GPS signal availability and DGPS positioning accuracy for two-dimensional navigation in two types of urban area, namely a downtown type with buildings up to 50 stories, and a residential area with two-story housing and tree-lined streets, is investigated using three multi-channel C/A code receiver types, including a fast-reacquisition narrow correlator spacing receiver. Signal availability, define... View full abstract»

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  • A reliable, versatile and intelligent datalink system (IDS)-the key for any real-time differential GPS application

    Publication Year: 1994, Page(s):777 - 783
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (764 KB)

    Real-time positioning with differential GPS (DGPS) techniques results in an enormous spread of accuracies from 110 m (SPS) down to the cm-level. The realization of this ultimate accuracy has progressed very well in the past few years. Several solutions have been presented with test results and it seems that this outstanding measurement technique with GPS will be state-of-the-art very soon. The cha... View full abstract»

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  • Achieving high-accuracy relative positioning in real-time: system design, performance and real-time results

    Publication Year: 1994, Page(s):540 - 546
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB)

    This paper covers the software and hardware concepts of a new, high-precision, real-time, differential-positioning system. The design objectives and operation principles for such the system are based on Leica's Wild SR299. The design concept is for a user-configurable system, covering a wide range of accuracies from meter to centimeter-level. Low accuracies are accomplished with relative ease. Hig... View full abstract»

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  • A transfer alignment algorithm study based on actual flight test data from a tactical air-to-ground weapon launch

    Publication Year: 1994, Page(s):431 - 438
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (532 KB)

    The paper provides results from a joint study of various transfer/alignment (T/A) techniques including velocity matching, integrated velocity matching, and doubly integrated velocity matching approaches. The goal is to determine how the various algorithms perform when driven with actual flight test data. The study addresses key T/A Kalman filter issues such as the effect of wing flexure vibration ... View full abstract»

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  • Minitact gyroscope-the low cost alternative

    Publication Year: 1994, Page(s):813 - 816
    Cited by:  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    The allure of the solid state optical gyros is being challenged by the invention of a new spinning mass device providing superior low noise drift performance, high reliability at a very low cost. The Minitact is a unique two axis gyroscope advancing the technology of spinning mass devices to set new low cost standards. Minitact provides all the low noise performance benefits of tuned rotor gyrosco... View full abstract»

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  • Differential GPS integrity monitor

    Publication Year: 1994, Page(s):225 - 232
    Cited by:  Papers (1)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    Government provided DGPS service is currently planned for all coastal waters of the US. The Harbor/Harbor Approach (HHA) requirement from the Federal Radionavigation Plan will be met by the Coast Guard's DGPS service. Commercial shipping will rely heavily on the DGPS service for maneuvering in harbors and constrained waterways. Therefore, the Coast Guard has developed a requirement for real time i... View full abstract»

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  • Accurate positioning in an inertial-based automatic flight inspection system using differential global navigation satellite systems

    Publication Year: 1994, Page(s):107 - 112
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    The paper presents the simulation and flight test results of a position estimation technique which integrates differential global navigation satellite systems (DGNSS) and an inertial navigation system (INS) in the final approach flight inspection mission. The purpose of an automatic flight inspection system (AFIS) is to verify performance and calibrate ground-based aircraft navigation and landing ... View full abstract»

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  • Requirements analysis of differential GPS for Singapore

    Publication Year: 1994, Page(s):233 - 238
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB)

    The use of GPS system is gradually and steadily increasing throughout the world. The degraded performance of the commercial/civilian GPS system due to the incorporation of selective availability (SA) feature of the system has provided significant impetus to the utilization of the concept of differential GPS. Successful implementations of the DGPS concept for non-military applications have been ana... View full abstract»

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