Results 71 to 80 of about 121 (91)
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H-field antenna considerations for eLoran aviation applications
2008 IEEE/ION Position, Location and Navigation Symposium, 2008The U.S. Department of Homeland Security has designated enhanced Loran (eLoran) as a backup for the Global Positioning System and will pursue development and delivery of eLoran services to aviation, maritime, and time and frequency users. Many of the improvements, much of the analysis, and the operational modifications necessary to transition the ...
Chris G. Bartone +4 more
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ELoran Receiver Sky-ground Wave Recognition Based on MUSIC Algorithm
Proceedings of the 2nd International Conference on Telecommunications and Communication Engineering, 2018In view of the fact that the conventional eLoran receiver sky-ground wave recognition method can not effectively utilize the signal energy, according to the characteristics of the eLoran sky-ground wave frequency domain signal mathematical model, a sky-ground wave recognition method based on multiple signal classification (MUSIC) algorithm is proposed.
Yaru Zhao, Yanwei Sun, Ping Huang
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An Evaluation of eLoran as a Backup to GPS
2007 IEEE Conference on Technologies for Homeland Security, 2007In 2001, the Volpe National Transportation Systems Center completed an evaluation of the Global Positioning System (GPS) vulnerabilities and the potential impacts to transportation systems in the United States. One of the recommendations of this study was for the operation of backup system(s) to GPS; Loran C, which has been operated by the U.S.
Johnson, Gregory W. +4 more
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2018
The second half of the 20th century has made its mark on world history as the era of information technology and conquest of space. Since 1974, when the first test NAVSTAR GPS satellite was launched, our lives have been elevated to another dimension. Presently, there are eleven global and regional satellite systems in the integration phase with Global ...
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The second half of the 20th century has made its mark on world history as the era of information technology and conquest of space. Since 1974, when the first test NAVSTAR GPS satellite was launched, our lives have been elevated to another dimension. Presently, there are eleven global and regional satellite systems in the integration phase with Global ...
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Transmitted Enhanced Loran (eLoran) Signal Standard
2018<div class="section abstract"> <div class="htmlview paragraph">This transmitted eLoran signal standard provides technical descriptions of the waveform, specifications, and explanations. The data channel, receiver specification, and recommended practices are described in the SAE9990 family of standards.</div></div>
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An Evaluation of the Effectiveness of Intentional Interference to eLORAN
MILCOM 2006, 2006Recent studies on the vulnerability of GPS to interference recommend that a backup system be made available to determine own-aircraft position for both navigation and surveillance services in the National Airspace System (NAS). This backup will provide horizontal-only position information during brief, localized GPS outages caused by system, natural or
David Chadwick, Taehwan Kim
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Transmitted Enhanced Loran (eLoran) Signal Standard for 9th Pulse Modulation
2018<div class="section abstract"> <div class="htmlview paragraph">This eLoran transmitted signal standard provides technical descriptions of the data channel using ninth pulse modulation techniques. The eLoran transmitted signal standard, to which this data channel technique applies, is part of the SAE9990 family of standards covering data ...
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Transmitted Enhanced Loran (eLoran) Signal Standard for Tri-State Pulse Position Modulation
2018<div class="section abstract"> <div class="htmlview paragraph">This eLoran transmitted signal standard provides technical descriptions of a data channel based on the tri-state pulse position modulation technique. The eLoran transmitted signal standard, to which this data channel technique applies, is part of the SAE9990 family of ...
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Design of a 210-m High eLoran Transmitting Antenna
Journal of Korean Institute of Information Technology, 2016Swoon-Woo Choi +4 more
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Design of Performance Monitoring System for eLoran Time Synchronization Service
Journal of the Korean Society of Marine Environment and Safety, 2021Seo Seo +4 more
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