منابع مشابه
Differential Loran-C
The U. S Coast Guard and Federal Aviation Administration are cooperating in a major effort to define and analyze the performance of a new Enhanced Loran system as a backup for GPS provided services. Each transportation mode has defined requirements that the new Enhanced Loran must meet to be acceptable in the radionavigation mix of systems. The USCG developed a set of requirements for Loran mar...
متن کاملMid-Continent Earthquakes as a Complex System
Niels Bohr once observed: “How wonderful that we have met with a paradox. Now we have some hope of making progress.” This situation is happening in the long-frustrating effort to understand large earthquakes in continental interiors. The paradox arises from a series of GPS studies across the New Madrid seismic zone (NMSZ). Large (magnitude >7) earthquakes felt across the Midwest occurred here i...
متن کاملMigration of LORAN-C for Land-Navigation
Jörg Pfister, ZIV-Institute for Integrated Traffic and Transport Systems Robert-Bosch-Strasse 7,64293 Darmstadt, Germany Tel.: +49 6151 27028-36, Fax: +49 6151 27028-10 E-Mail: [email protected] Günther Abwerzger, TeleConsult Austria (Austria) Jürgen Beyer, DE-Consult (Germany) Klaus Legat TeleConsult Austria (Austria) Martin Maurer, MAN Technologie AG (Germany) Christian Schmalz, Darmstadt Univer...
متن کاملGeographic Information System Loran-c Coverage Modeling
Geographic information system (GIS) technologies can offer significant advantages over conventional computer programs designed to predict Loran-C coverage. While newer conventional coverage prediction programs offer sophisticated propagation and interference modeling, flexibility in the specification of positioning techniques, and improved mapping quality, geographic information systems offer t...
متن کاملThe Loran-C Cycle Identification Problem
Current techniques for cycle identification in Loran-C radionavigation receivers are reviewed and compared. A new technique is presented for use in hard-limiting receivers. It is based on the widely used analogue “half-cycle peak ratio” technique, from which it differs by being entirely digital; no additional analogue signal processing or other hardware is required. Drawing on recent advances, ...
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ژورنال
عنوان ژورنال: IEEE Aerospace and Electronic Systems Magazine
سال: 1987
ISSN: 0885-8985
DOI: 10.1109/maes.1987.5005294