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# Position Location and Navigation Symposium, 1996., IEEE 1996

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

Publication Year: 1996
| PDF (549 KB)

Publication Year: 1996, Page(s):422 - 425
Cited by:  Papers (1)
| | PDF (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»

• ### Comparative benefits of various automotive navigation and routing technologies

Publication Year: 1996, Page(s):415 - 421
Cited by:  Papers (1)  |  Patents (8)
| | PDF (776 KB)

The first practical in-vehicle automotive navigation systems utilized dead reckoning combined with digital map-matching to keep track of vehicle positions and to show them in real time on digital map displays. Global Positioning Satellites (GPS) and differential GPS have provided significant navigation system improvements when combined with dead-reckoning, and they have enabled alternative navigat... View full abstract»

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

Publication Year: 1996, Page(s):407 - 414
| | PDF (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»

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

Publication Year: 1996, Page(s):399 - 406
| | PDF (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»

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

Publication Year: 1996, Page(s):342 - 351
| | PDF (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»

• ### Efficient ambiguity resolution using constraint equation

Publication Year: 1996, Page(s):277 - 284
Cited by:  Papers (4)  |  Patents (9)
| | PDF (476 KB)

Precise relative positioning is possible by using the carrier phase observables of Global Positioning System (GPS). To use carrier phase for positioning, however, initial integer ambiguity included in the carrier phase measurement must be resolved. Many integer ambiguity search techniques while on the move, the so called on-the-fly (OTF) ambiguity search, have been proposed in recent years. But th... View full abstract»

• ### INS/GPS navigation systems for land applications

Publication Year: 1996, Page(s):391 - 398
Cited by:  Papers (3)  |  Patents (1)
| | PDF (772 KB)

Kearfott has developed a family of ring laser gyroscope (RLG) angular displacement and linear acceleration sensors which have been integrated with GPS in various configurations to address the operational requirements and cost of ownership constraints for tactical applications. This paper discusses the considerations in developing a military land navigation system which meets the rigid performance ... View full abstract»

• ### The technological evolution of inertial reference systems

Publication Year: 1996, Page(s):336 - 341
| | PDF (440 KB)

The laser gyro based inertial reference system (IRS) has become the standard for transport aircraft since introduced on the Boeing 767/757 in September 1982. Integration of the air data function, first introduced into production on the Airbus A.320 in 1988, produced the Air Data Inertial Reference Systems (ADIRS). Honeywell has evolved the technology through a series of innovations that have led t... View full abstract»

• ### A GPS real-time system for instantaneous ambiguity resolution: development and experiences

Publication Year: 1996, Page(s):270 - 276
| | PDF (648 KB)

The system described deals with real-time applications where the symbiosis of hardware and software plays a dominating role. Based on the algorithms developed at the Institute of Physical Geodesy allowing instantaneous ambiguity resolution for rapid-static and kinematic positioning, the paper shows the realization-process of an all-purpose real-time DGPS system. Besides the adaptation of the softw... View full abstract»

• ### ECDIS steering algorithm for vessel autopilot

Publication Year: 1996, Page(s):103 - 113
Cited by:  Papers (1)
| | PDF (944 KB)

Offshore Systems Ltd. (OSL) produces an ECDIS (electronic chart display and information system), which is called the Electronic Chart Precise Integrated Navigation System (ECPINS). The objective of the ECPINS research is to incorporate the essentials of marine navigation into a single bridge display that automates marine navigation, thereby reducing cost and increasing safety. Currently OSL has in... View full abstract»

• ### Lessons learned: PATRIOT PLGR integration

Publication Year: 1996, Page(s):385 - 390
| | PDF (472 KB)

The PATRIOT air defence system is composed of fire units (FU). Each FU includes; radar sets, missile launcher stations, and engagement control stations. There are nominally eight launchers per radar. Each radar must be precisely emplaced with respect to an absolute coordinate frame, and each launcher must be precisely emplaced with respect to its radar. In order to enhance PATRIOT's mobility, redu... View full abstract»

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

Publication Year: 1996, Page(s):328 - 335
Cited by:  Papers (9)
| | PDF (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»

• ### An optimal ambiguity resolution technique for attitude determination

Publication Year: 1996, Page(s):262 - 269
Cited by:  Papers (7)  |  Patents (6)
| | PDF (508 KB)

Integer ambiguity resolution is a crucial component of attitude determination. To ensure that the integer ambiguity resolution process is optimised, all information available should be used in a suitable manner. This information not only provides more rapid ambiguity resolution, but also provides confidence that correct resolution has been achieved. This paper describes a processing procedure whic... View full abstract»

• ### Remote fiber optic gyroscopes for a broad range of applications

Publication Year: 1996, Page(s):553 - 558
| | PDF (428 KB)

Fibersense Technology Corporation has completed the development of a new type of Fiber Optic Gyroscope (FOG) configuration in which the sensing element-the fiber coil-is separated from all other gyro elements. This configuration allows fiber coils to be located on the device of interest, without requiring any electrical connections to the rest of the gyro or system. A production version of this co... View full abstract»

• ### Impact of 1-meter GPS navigation on warfighting

Publication Year: 1996, Page(s):530 - 537
Cited by:  Papers (2)  |  Patents (7)
| | PDF (800 KB)

Advanced satellite-based geocoordinate positioning systems capable of navigation accuracies of 1 meter or better, such as wide-area differential GPS (WADGPS), will cause fundamental changes in military tactics and strategies. Weapons employing this capability are about to emerge, as demonstrated by a recent set of trials supported by SRI under the Air Force's EDGE High Gear program. The determinin... View full abstract»

• ### Schuler pumping of inertial velocity errors due to gravity anomalies along a popular North Pacific airway

Publication Year: 1996, Page(s):642 - 648
Cited by:  Papers (2)
| | PDF (1088 KB)

Gravity anomalies have long been a major error source for high precision inertial navigation, but were thought to have a minimal effect on the performance of the less precise inertial navigation systems used for commercial air transport. For the most part that is true. However, there are isolated areas where gravity anomalies are so significant that they become the dominant error source even for a... View full abstract»

• ### Automatic vehicle location system implementation

Publication Year: 1996, Page(s):689 - 696
Cited by:  Patents (1)
| | PDF (716 KB)

Since August, 1994 the Phoenix Fire Department's new computer-aided dispatch system has been making dispatch recommendations based on current unit locations. This has been made possible by tightly integrating an automatic vehicle location (AVL) system with the dispatch system. This paper describes how the Phoenix Fire Department (hereinafter referred to as Department) has integrated the two system... View full abstract»

• ### Database concept for static navigational information

Publication Year: 1996, Page(s):96 - 102
Cited by:  Papers (1)
| | PDF (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»

• ### GPS military land navigation and strategy impacts

Publication Year: 1996, Page(s):381 - 384
Cited by:  Patents (2)
| | PDF (396 KB)

The battlefield of the future is a highly dynamic and lethal environment that will demand near real time situational awareness information. In order for Army commanders to survive and win in this environment, they must use a host of complex systems that provide reliable time synchronization and accurate information on the location of friendly and hostile forces. Under the ongoing army digitization... View full abstract»

• ### Algorithms that use the ionosphere to control GPS errors

Publication Year: 1996, Page(s):145 - 152
Cited by:  Papers (7)  |  Patents (1)
| | PDF (660 KB)

The ionosphere, a major source of GPS pseudorange errors, can now be used to monitor and control other pseudorange errors in GPS two-frequency systems. These errors, which may originate in the receiver, pre-amp, satellite, or elsewhere, have been a continuing correction issue for precise GPS pseudorange measurement. Ionosphere-based correction is possible through use of self-calibration of pseudor... View full abstract»

• ### Wide-area differential GPS reference-station placement

Publication Year: 1996, Page(s):503 - 514
Cited by:  Papers (2)  |  Patents (4)
| | PDF (3004 KB)

A wide-area differential Global Positioning System (GPS) augmentation system provides differential corrections to GPS users in a large, but bounded, service area. Wide-area differential corrections are of two basic types: satellite-ephemeris/clock corrections and ionospheric-delay corrections. The underlying differences between the two types of corrections and the measurements used to calculate th... View full abstract»

• ### Recursive maximum likelihood estimation of aircraft position using multiple range and bearing measurements

Publication Year: 1996, Page(s):199 - 204
Cited by:  Papers (1)
| | PDF (324 KB)

In this paper an algorithm is presented that recursively computes the maximum likelihood (ML) estimates of an aircraft's position in space. By combining an a priori ML estimate of the aircraft's state vector and its error covariance matrix with multiple range measurements, updated estimates are obtained. This technique is particularly useful in situations where distance measuring equipment coverag... View full abstract»

• ### Test results from a tactical grade IMU using fiber optic gyros and quartz accelerometers

Publication Year: 1996, Page(s):42 - 48
Cited by:  Papers (1)
| | PDF (612 KB)

Honeywell has been under contract with the US Air Force to develop a very small tactical grade fiber optic gyro (FOG) IMU. This paper covers program requirements, the FOG IMU description and test results. The unit is 25 cu. inches in volume and has a gyro performance specification of 1-10 deg/hr over the full military temperature range. The unit has been designed with cost the most important param... View full abstract»

• ### New approach to coarse alignment

Publication Year: 1996, Page(s):324 - 327
Cited by:  Papers (11)
| | PDF (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»