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A Study Of Signal To Noise Ratio Lane Counting And Position Accuracy Using The Omega Navigation System
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Book Synopsis A Study of Signal to Noise Ratio, Lane Counting, and Position Accuracy Using the Omega Navigation System by : Glen Leif Francisco
Download or read book A Study of Signal to Noise Ratio, Lane Counting, and Position Accuracy Using the Omega Navigation System written by Glen Leif Francisco and published by . This book was released on 1976 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: A forty-hour flight program was completed to study signal to noise ratio, lane counting and position accuracy using a low cost Omega navigation system in a general aviation aircraft. Specific test objectives were developed to investigate signals both on the bench and in the air. Signal to noise ratio and lane counting characteristics were investigated in a single frequency, uncorrected mode and in a pseudo-differential mode. It was learned that the received signal to noise ratio is highly correlated with lane counting characteristics and receiver navigability. The relationship between system accuracy and reliability was also examined. The Omega navigation system's bias and position accuracy were investigated with the aid of the Discrete Address Beacon System (DABS). A circular probable error of 3500 feet was observed. It was also determined that certain necessary hardware and system improvements must be implemented before a completely usable Omega navigation system can be offered to the general aviation user.
Book Synopsis A Study of Signal to Noise Ratio, Lane Counting, and Position Accuracy Using the Omega Navigation System by : Glen Leif Francisco
Download or read book A Study of Signal to Noise Ratio, Lane Counting, and Position Accuracy Using the Omega Navigation System written by Glen Leif Francisco and published by . This book was released on 1977 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Conference Publication written by and published by . This book was released on 1981 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation Publisher : ISBN 13 : Total Pages :546 pages Book Rating :4.0/5 (18 download)
Book Synopsis Coast Guard Authorization-1975 by : United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation
Download or read book Coast Guard Authorization-1975 written by United States. Congress. House. Committee on Merchant Marine and Fisheries. Subcommittee on Coast Guard and Navigation and published by . This book was released on 1974 with total page 546 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NRL Report written by and published by . This book was released on 1979 with total page 474 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Evolution of Naval Radio-electronics and Contributions of the Naval Research Laboratory by : Louis A. Gebhard
Download or read book Evolution of Naval Radio-electronics and Contributions of the Naval Research Laboratory written by Louis A. Gebhard and published by . This book was released on 1979 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Study and Evaluation of the Omega Navigation System for Transoceanic Navigation by Civil Aviation by : Robert E. Scott
Download or read book Study and Evaluation of the Omega Navigation System for Transoceanic Navigation by Civil Aviation written by Robert E. Scott and published by . This book was released on 1969 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purposes of the study were to evaluate the accuracy of the Omega Navigation System operating in an airborne environment and the potential operational utility of the system for civil aviation. The error sources of Omega are identified, and their effect on the ability of an aircraft to maintain the desired flight track is evaluated. Characteristics of Omega which are pertinent to operation by civil aviation but which cannot be fully evaluated with available information are identified and recommendations for further investigations are given. The use of omega as a navigational aid with Omega signals continuously available at the input of the receiver, with compensation for lane loss, and with an appropriate phase-propagation model would allow air-craft operation at conventional aircraft speeds with rms cross-track deviations of 3 nmi if the 10.2 kHz carrier is used for position fixing. The most serious errors would result from failure of lane identification. Several methods of improving resolution reliability in airborne applications are given. Omega could be employed as a useful and valuable navigational aid if several potential problems can be resolved satisfactorily. While solutions to these problems can reasonably by expected with present technology, they have not been conclusively demonstrated. (Author).
Book Synopsis Investigation of New Techniques for Aircraft Navigation Using the Omega Navigation by :
Download or read book Investigation of New Techniques for Aircraft Navigation Using the Omega Navigation written by and published by . This book was released on 1978 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development Publisher : ISBN 13 : Total Pages :364 pages Book Rating :4.3/5 (243 download)
Book Synopsis Propagation Limitations of Navigation and Positioning Systems by : North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development
Download or read book Propagation Limitations of Navigation and Positioning Systems written by North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development and published by . This book was released on 1977 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Operational and Airworthiness Approval of Airborne OMEGA Radio Navigation Systems as a Sole Means of Overwater Long Range Navigation by : United States. Federal Aviation Administration
Download or read book Operational and Airworthiness Approval of Airborne OMEGA Radio Navigation Systems as a Sole Means of Overwater Long Range Navigation written by United States. Federal Aviation Administration and published by . This book was released on 1978 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1974 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings - International Marine and Shipping Conference by :
Download or read book Proceedings - International Marine and Shipping Conference written by and published by . This book was released on 1974 with total page 724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis General Aviation Omega Navigation in the National Airspace System by : Carl Edward Wischmeyer
Download or read book General Aviation Omega Navigation in the National Airspace System written by Carl Edward Wischmeyer and published by . This book was released on 1975 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction: Omega navigation has great potential as a navigation sensor for general aviation aircraft. Advantages of Omega navigation include signal availability at all altitudes, and no need for overflying of various stations. Also, because Omega coverage is not localized to small geographic areas, area navigation is an implicit capability of airborne Omega receivers. For use in the National Airspace System, several questions arise: How accurate is Omega navigation? How do you use the measurements made to give navigation information? What are the noise sources? How can these noise sources be eliminated or minimized? How do you use Omega in the National Airspace System? This thesis attempts to answer these questions based upon a 70-hour flight test program, mathematical models, analysis of the literature, and the author's experience as a commercially licensed, instrument-rated pilot. The thesis rather naturally divides into two parts: the first, Chapters II through VIII, attempts to answer the questions of Omega accuracy and operational characteristics. The second part of the thesis, Chapters IX through XVI, considers the questions of Omega implementation, including regulatory aspects and details required by good operating practice. The first part of the thesis, Chapters II through VIII, concerns Omega accuracies and the results of a 70-hour flight test program. Omega noise sources discussed in the literature were used for mathematical models, and a noise source not considered in the literature is discussed and measured. This is "short-term Omega noise", which is the noise in phase between successive measurements. For long time constant receivers, this noise is not important, but for light aircraft navigation, this is an important noise source. Analysis of the Weibull distribution showed little applicability of this distribution to Omega navigation errors, based upon the experience acquired in this program with a low-cost, commercially available Omega receiver. This flight test is also discussed in Refs. 16 and 17. In addition, four approaches were flown using Omega navigation, with surprisingly good results. Based upon the flight test data and the short-term noise measurements, mathematical models were made to determine RMS error of differential Omega with variations in update rate, and path-following accuracies available using Omega. The second part of the thesis concerns Omega implementation. The various configurations of Omega receivers are discussed. These configurations differ in what information is processed and how this information is used to give position information. Present regulations for Omega receivers are discussed, and future requirements for airborne Omega receivers, such as self-test and fail-soft capabilities, are discussed. Problems of waypoint setting errors with area navigation systems are discussed, and an easy method of error detection is shown which is compatible with Omega way point definition and which will allow use of standard aeronautical charts with minimal changes. Differential Omega is discussed in terms of message content and uplink medium. The results of the thesis are boiled down into the last chapter, the Conclusions. All of the meaty points are discussed briefly. Appendices include data on the approaches flown with the Omega receiver; the data collection and reduction for the flight evaluation program; and copyright agreement restrictions on reproduction of certain figures in the thesis based upon copyrighted approach plates.
Book Synopsis North Pacific Omega Navigation System Validation by : Paul Levine
Download or read book North Pacific Omega Navigation System Validation written by Paul Levine and published by . This book was released on 1981 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: OMEGA is a world-wide radio navigation system based on phase measurements of synchronized time-multiplexed continuous wave transmissions in the frequency band 10.2-13.6 kHz. Seven of the eight planned transmitting stations are already operational and are being utilized for enroute navigation by a large community of marine and aviation users. The validation procedure is to establish fixed and mobile monitor receivers to collect signal phase, amplitude and noise data and to supplement such data with controlled flight tests using specially fitted dedicated aircraft. The data thus obtained are then analyzed in the context of a well-developed theoretical propagation model in order to arrive at models of signal coverage and phase error statistics which are compatible with both the controlled measurements and operational experience of the user community. The coverage and phase statistics models thus derived then form the basis of the position-fix accuracy assessments which, in turn, are compared to navigational requirements in the region and to OMEGA system design objectives. The results of this process show the North Pacific to be a region well-favored from the standpoint of OMEGA performance, with particularly good coverage and accuracy north of the Hawaiian islands. In the fully implemented system, accuracy (2 drms) is expected to range between 1 and 4 nmi over most of the region, and is 1-2 nmi north of the Yokahama-Honolulu-Seattle axis. It is concluded that OMEGA will meet the enroute navigation requirements of both the marine and aviation user community in the North Pacific on a 24-hour full time basis.
Book Synopsis Proceedings of the First Omega Symposium by :
Download or read book Proceedings of the First Omega Symposium written by and published by . This book was released on 1971 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Instrumentation of the Nrl Differential Omega Study of April 1969 by : W. D. Meyers
Download or read book Instrumentation of the Nrl Differential Omega Study of April 1969 written by W. D. Meyers and published by . This book was released on 1969 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Omega navigation system accuracy of one to two miles can be improved significantly in a given area by obtaining sky-wave and propagation anomaly corrections from a fixed monitor in the area. The improvement in navigational accuracy is a function of the distance from the fixed monitor, the signal-to-noise ratio, and the instrumental accuracy of the receiving equipments. As part of the differential Omega study of April 1969, two AN/WRN-2(XN-1) Omega receivers were obtained, modified, and evaluated to determine the precision with which phase measurements could be made with this type of equipment. This report describes the modifications performed and the laboratory measurements made to determine the instrumental accuracy of the equipment used in the differential Omega study. (Author).
Book Synopsis Rendezvous Accuracy of the Omega Navigation System by : J. W. Brogden
Download or read book Rendezvous Accuracy of the Omega Navigation System written by J. W. Brogden and published by . This book was released on 1964 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: Omega is a long-range, very-low-frequency radionavigation system with capabilities of providing a fix with an uncertainty of one mile or less at ranges of 5000 miles from the transmitting stations. The variations in propagation velocities of the signals over a particular path are the major cause of the errors. If the system is used as a rendezvous aid, the propagation errors will cancel out. Thus, the rendezvous accuracy will be greater than the absolute accuracy. The object of this investigation was to determine the rendezvous accuracy of a helicopter and a truck in various surroundings by use of Omega. The Forestport-Summit transmissions demonstrate that the system could be used as a rendezvous aid with accuracies of around 200 yards, with the time of day or environment having no apparent effect on the rendezvous errors. The Haiku-Summit pair showed a greater variation in rendezvous error. In past experiences with the Mark I receiver if the automatic gain control (AGC) meter indicated more than 40 microamperes, the signal input amplitude was marginal. During this experiment the majority of the AGC readings were above this value for receptions from Haiku. The additional electrical noise in the helicopter and an inadequate antenna combined with the already weak Haiku signal aided in making the Haiku-Summit readings marginal. (Author).
