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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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  • Test results over extended environments for Litton's inertial navigation grade interferometric fiber optic gyro

    Publication Year: 1994, Page(s):176 - 181
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (424 KB)

    Litton's Guidance and Control Systems Division has been developing interferometric fiber optic gyro (IFOG) technology for inertial navigation applications (requiring bias ⩽0.01 degrees per hour, one sigma) since 1986. The objective of this effort has been to develop a small, lightweight, highly reliable rotation sensor based on solid-state technology for productionization before the year 2000.... 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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  • 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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  • Fault-Tolerant Air Data Inertial Reference System development results

    Publication Year: 1994, Page(s):31 - 36
    Cited by:  Papers (2)  |  Patents (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    A new fault-tolerant inertial system architecture is emerging in commercial transport aircraft. This architecture. through sensor skew redundancy and fault tolerant electronics, provides improvement in the integrity, availability and cost of ownership. The system described is a Fault-Tolerant Air Data Inertial Reference System (FT/ADIRS). The system consists of a Fault-Tolerant Air Data Inertial R... 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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  • GPS conventional ALCM-the untold story of the weapon used to start the Gulf War

    Publication Year: 1994, Page(s):474 - 479
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The conventional air launched cruise missile (CALCM) was developed from the strategic ALCM, AGM-86, by integrating GPS navigation into the missile in place of terrain correlation (TERCOM). In addition, the nuclear warhead was replaced by conventional explosives. The CALCM was developed, tested, and fielded in a single year (mid 1986-mid 1987) by the Boeing Company where the author was then employe... View full abstract»

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  • GNSS-progress towards implementation

    Publication Year: 1994, Page(s):23 - 30
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (520 KB)

    Global navigation satellite systems comprising the Navstar GPS and GLONASS systems and to be supplemented by an Inmarsat-3 overlay, will soon be operational. Full Operational Capability (FOC) for GPS can be expected early in 1995. For GLONASS progress towards FOC will be slower with a final completion date probably nearer 1996-98. Particularly in view of the interest in joint GPS/GLONASS initiativ... 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 (3)
    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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  • 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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  • GPS based attitude determining system for marine navigation

    Publication Year: 1994, Page(s):806 - 812
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (620 KB)

    Under contract with the US Coast Guard, Adroit Systems, Inc. has developed a low cost, GPS based attitude determining system (ADS) for marine navigation, TRIADS. The Coast Guard will use the system for general navigation, as well as hydrographic surveying, ice breaker navigation, and positioning buoys or other objects. Following a successful system demonstration validating the concept design, a sy... 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 (24)  |  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 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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  • Single point satellite navigation accuracy-what the future may bring

    Publication Year: 1994, Page(s):16 - 22
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (408 KB)

    In order to assess the level of accuracy which may be available in the future with GPS as better broadcast or quasi real-time precise ephemerides become available, the accuracy performance and long term stability of single point GPS is analyzed using P code L1 and ionospherically corrected (L1/L2) data collected over a period of several months at selected permanent stations of the Canadian Active ... 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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  • GPS exploitation for precision targeting a relative targeting system

    Publication Year: 1994, Page(s):145 - 152
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    The paper presents an approach to provide a precise adverse weather Global Positioning System aided relative targeting system for GPS/INS munitions. The paper discusses the exploitation of GPS integrated with an inertial navigation system, and ultra-high resolution synthetic aperture ground mapping capability, and height above target measurement techniques to provide GPS/SAR equipped combat aircra... View full abstract»

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  • The United States Navy Electronic Chart Display and Information (ECDIS) development project

    Publication Year: 1994, Page(s):800 - 805
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    The United States Navy has an Electronic Chart Display & Information System (ECDIS) currently in full scale development. This system is called the navigation sensor system interface, or NAVSSI (AN/SSN-6). The NAVSSI will utilize the digital nautical chart (DNC) database for navigation. The DNC database is a global marine charting database being developed by the United States Defense Mapping Ag... 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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  • Fuzzy phase-locked loops

    Publication Year: 1994, Page(s):252 - 259
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (548 KB)

    The problem of robust phase-locked loop (PLL) design has attracted attention for many years, particularly since the advent of the Global Positioning System. This paper proposes and demonstrates the use of a fuzzy PLL to estimate the time-varying phase of a sinusoidal signal. It is shown via simulation results that fuzzy PLLs offer performance comparable to analytically derived PLLs (e.g., Kalman f... 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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  • Dynamic Environment Communications Analysis Testbed (DECAT) and its applications to Space Shuttle Orbiter and Space Station usage of the Global Positioning System (GPS)

    Publication Year: 1994, Page(s):8 - 15
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    The Communication System Simulation Laboratory (CSSL) provides a facility for analyzing and simulating space communication systems. The CSSL has simulation tools that model NASA communication systems and the environment in which they operate. One of these tools is a radio frequency coverage analysis tool called the Dynamic Environment Communications Analysis Testbed (DECAT). DECAT provides the cap... View full abstract»

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  • Minimum variance network DGPS algorithm

    Publication Year: 1994, Page(s):418 - 425
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    A new algorithm is presented, which is called the minimum variance algorithm. It is applicable for DGPS reference station networks of any size and is ideally suited for local and regional area DGPS networks. This algorithm solves for the minimum variance weighting coefficients which are applied by the user to the corrections received from multiple DGPS reference stations. Monte Carlo performance s... View full abstract»

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  • The Army GPS Truth Data Acquisition, Recording, and Display System (TDARDS) at the White Sands Missile Range (WSMR)

    Publication Year: 1994, Page(s):134 - 144
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    The Army GPS Truth Data Acquisition, Recording, and Display System (TDARDS) at the White Sands Missile Range (WSMR) is a compact, lightweight, low-cost, and easily transportable or mobile GPS-based tracking system that uses up-to-date GPS, radio datalink, and computer technology to provide highly accurate, real-time time-space position information (TSPI) on up to ten test objects, such as ground v... View full abstract»

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  • Quality control in DGPS separation vector systems

    Publication Year: 1994, Page(s):726 - 732
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    Quality control and the computation of relative positions of multiple remote objects are key elements of a marine seismic streamer tracking system. NCS International and Pulsearch Navigation Systems have developed a separation vector system that has undergone extensive testing in the Gulf of Mexico and the North Sea. Each remote object, or in this case a tail buoy, is equipped with a controller bo... View full abstract»

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