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Position Location and Navigation Symposium, 1994., IEEE

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 (2)
    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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  • SYNC3: a modern approach to Omega synchronization

    Publication Year: 1994, Page(s):796 - 799
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    The paper describes the latest evolution of SYNC, the computer program which is used to maintain the Omega system synchronization. The authors present a brief history of SYNC, its strengths and weaknesses, and the development of a new SYNC. The new program, SYNC3, is an enhanced version of its predecessor maintaining much of the original functionality, but exploiting advances in computer technolog... View full abstract»

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  • A common open avionics architecture

    Publication Year: 1994, Page(s):711 - 718
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (608 KB)

    Discusses an avionics architecture for unmanned air vehicles (UAV) that is common to several different classes of UAV and that is open in that it can accommodate components from several different vendors. A prototypical implementation of this architecture is also discussed View full abstract»

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  • Wide area differential GPS as a future navigation system in the U.S

    Publication Year: 1994, Page(s):788 - 795
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (616 KB)

    The Global Positioning System (GPS) is an extremely accurate positioning sensor with an accuracy of 100 meters. However in aircraft precision approaches, higher accuracy is required. Conventional differential GPS (DGPS) usually has accuracies of 1-3 meters within 100 kilometers of the reference station, even with selective availability (SA) errors. If DGPS is implemented on a large scale, the tota... View full abstract»

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  • A tactical fiber optic gyro with all-digital signal processing

    Publication Year: 1994, Page(s):170 - 175
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    Northrop's Electronics Systems Division has built and tested a tactical fiber optic gyro (FOG) with all-digital signal processing. The Northrop FOG uses 160 meters of polarization maintaining optical fiber wound on a spool 29 mm in diameter. Without any data compensation, this FOG has demonstrated excellent scale factor stability and non-linearity (<100 ppm) over a high dynamic range (±1... View full abstract»

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  • Comparison of federated and centralized Kalman filters with fault detection considerations

    Publication Year: 1994, Page(s):703 - 710
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (636 KB)

    This paper examines the results obtained by simulating an aircraft navigation system with a partial complement of a typical avionics sensor array using two different techniques of estimation processes: the conventional Kalman and the federated filter architectures. Areas of interest include error state estimation accuracy, residual behavior under induced sensor failure conditions, and potential fo... 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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  • 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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  • The upslope endfire ILS glide slope: a non-image system that accommodates rising terrain below the approach path

    Publication Year: 1994, Page(s):697 - 702
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The glide slope component of the instrument landing system (ILS) has traditionally presented the greatest technical challenge when providing landing guidance for an airport. A major reason is that the typical ILS glide slope makes use of the ground as an image-forming plane to increase the effective vertical aperture and thus the resolution available from the guidance signal. Not only is a reasona... View full abstract»

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  • Performance analysis of a narrow correlator spacing receiver for precise static GPS positioning

    Publication Year: 1994, Page(s):355 - 360
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The performance of narrow correlator spacing C/A code GPS receiver technology was assessed for static GPS surveying using 10-channel, single frequency GPSCard receivers. A series of surveys was conducted in the Eastern United States in December 1992 in support of this assessment. Baselines of 0.5 to 320 km were observed over several days to analyse repeatability and agreement with reference coordi... View full abstract»

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  • A GPS integrity channel based fault detection and exclusion algorithm using maximum solution separation

    Publication Year: 1994, Page(s):747 - 754
    Cited by:  Papers (1)  |  Patents (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (640 KB)

    The paper presents a new GPS integrity channel (GIC) based fault detection and exclusion (GFDE) algorithm. The algorithm employs the maximum solution separation technique augmented by data broadcast over the GIC to ensure GPS integrity. Furthermore, GFDE improves on current snapshot RAIM techniques by reducing the effect of the accuracy and availability trade-off, thereby increasing system availab... 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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  • GPS targeting methods for non-lethal systems

    Publication Year: 1994, Page(s):649 - 656
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (664 KB)

    Non-lethal systems consist of devices and methods which can be used to incapacitate an adversary's capability, while minimizing casualties and collateral property or environmental damages. Examples of military non-lethal concepts include wire mesh entanglements to snag tank treads, highly expansive sticky foams to immobilize personnel and material, anti-material agents to degrade supplies, and inf... View full abstract»

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  • High accuracy performance capabilities of the military standard ring laser gyro inertial navigation unit

    Publication Year: 1994, Page(s):464 - 473
    Cited by:  Papers (6)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    The medium accuracy standard ring laser gyro (RLG) inertial navigation unit (INU) exemplified by Litton's LN-93 system has benefited from continual improvements during the production process such that the present navigational accuracy and reliability are better by a factor of two or more over the original requirements as defined by SNU 84-1. Performance enhancements are now available which further... 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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  • 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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  • Modified strapdown inertial navigator error models

    Publication Year: 1994, Page(s):426 - 430
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB)

    The paper revisits the problem of error modeling for strapdown INS for the purpose of navigation sensor blending with a Kalman filter. This problem has been addressed repeatedly over the last 30 years, and different perspectives on INS error modeling have emerged. The paper reviews these, focussing in particular on the properties and relative advantages and disadvantages of the φ-angle and &ps... View full abstract»

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  • Application of on-the-fly kinematic GPS to seismic surveying

    Publication Year: 1994, Page(s):555 - 561
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The application of on-the-fly kinematic GPS (OTF-KGPS) to establishing a large scale seismic survey control is pioneered. The seismic points are staked out in the field using the real-time DGPS method and their precise coordinates are determined using OTF-KGPS. The paper briefly describes land seismic survey requirements. It then outlines the key concepts of the employed method of OTF-KGPS. Field ... View full abstract»

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  • A new approach to GPS integrity monitoring using prior probability models and optimal threshold search

    Publication Year: 1994, Page(s):739 - 746
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (696 KB)

    Current methods for GPS receiver autonomous integrity monitoring are limited by the assumptions they make. Using published studies of navigation system reliability, this paper develops a prior probability model for spacecraft and receiver anomalies based on non-ideal failure models and the uncertainty present in their failure distribution parameters. With this model, the thresholds for a residuals... View full abstract»

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  • A study on the planning aids to navigation systems on the Taiwan area

    Publication Year: 1994, Page(s):769 - 776
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    Taiwan has land area of 36000 square kilometres. As far as the politics and economy are concerned, the shipping industry in Taiwan is extremely important. Almost 99% of import and exports are transported by sea. The major ports, Kaohsiung and Keelung, retained the fourth and tenth places in the top 20 league of world container ports in 1990. And the expansion of ports in the governments Six Year N... View full abstract»

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  • Relative GPS

    Publication Year: 1994, Page(s):586 - 590
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The purpose of this research is to investigate the relative accuracy of GPS receivers as related to navigating a robotic vehicle in a caravan following mode and related applications. For most applications robotic vehicle navigation requires position accuracy less than a meter. The caravan following mode of robotic vehicle operation is of particular interest to the staff at Texas A&M University... View full abstract»

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  • Determining GPS anti-jamming performance on tactical missiles

    Publication Year: 1994, Page(s):641 - 648
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    The use of the Global Positioning System (GPS) for aiding the navigation of missiles in a tactical environment is growing. Two missile systems which have fielded GPS are the Tomahawk Cruise Missile and the Standoff Land Attack Missile (SLAM). Other systems such as the Army Tactical Missile System (ATACMS) are incorporating GPS into their navigation solution. When integrating GPS into a vehicle, th... View full abstract»

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  • GPS offers the ideal technique for postmission training evaluation

    Publication Year: 1994, Page(s):460 - 463
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    With current training instrumentation technology, continuous contact with the player is required in real time. Therefore, only a limited number of players may participate in an exercise, and they all must be in constant radio contact with a groundsite. GPS offers an ideal solution to this training problem because no real-time contact with the ground is required, and all TSPI data derived from GPS ... View full abstract»

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  • The enhanced miniaturized airborne GPS receiver

    Publication Year: 1994, Page(s):153 - 158
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    The paper describes the design, functional capabilities, and performance of the enhanced miniaturized airborne GPS receiver (EMAGR) being developed by the Collins Avionics & Communications Division, Rockwell International. It is the result of adding functional and performance capability to the DoD standard MAGR, also produced by Rockwell's Collins Division. The details of the EMAGR's hardware ... View full abstract»

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