Results 151 to 160 of about 1,504 (173)

Loran-A/Loran-C Systems Availability

Offshore Technology Conference, 1975
ABSTRACT In the United States, Statute 14 USCG 81 assigns responsibility for aids to navigation to the U. S. Coast Guard. Established aids provide the user with position determination capabilities -- to avoid hazards, reach destinations, or to maintain fixed locations. The marine environment is divided into the high
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Weather Effect on LORAN-C Propagation

Navigation, 1980
A few simple and fundamental theories are offered to help explain some observed weather effects on Loran-C signal. For instance, Loran-C data for the U.S. East Coast in winter indicate that the dry term of the refractive modulus, N-dry, behaves approximately as an exponential function of height.
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Trade-Offs in Loran-C Receivers

Offshore Technology Conference, 1976
Abstract This paper will compare various classes of Loran-C receivers with respect to both price and operating characteristics. It includes a short discussion of the Loran-C system, and then sets out to provide the prospective receiver purchaser with some guidelines to use for evaluation of the commercial market ...
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Loran-C Expansion: Impact on Offshore Technology

Offshore Technology Conference, 1975
ABSTRACT Expansion of the Loran-C Navigation System will have a substantial impact on offshore navigation in the U. S. coastal Confluence Zone. Loran-C provides a precise, continuously-available method of vessel location, permitting more effective harvest of natural resources through considerable savings in time ...
James F. Culbertson, John F. Roeber
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Loran-C: A Precision Radionavigation System

Navigation, 1962
LORAN-C IS A HYPERBOLIC system of radionavigation, similar to Loran-A, which can be used by ships and aircraft for position fixing in all weather, on the sea as well as over land. It operates in the frequency band of 90–110 kilocycles, which was allocated for long-distance radionavigation systems by the, 1947 International Telecommunications Union ...
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A Loran C Precision Guidance System

Offshore Technology Conference, 1976
ABSTRACT The United States Coast Guard is implementing a feasibility demonstration of LORAN C to perform precision guidance of ore carriers on the St. Mary?s River. A special four-station LORAN C chain has been erected to provide optimal hyperbolic LORAN C coverage for the 60- mile river channel.
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Loran-C and the land-mobile environment

36th IEEE Vehicular Technology Conference, 1986
In the last few years interest in automatic vehicle location (AVL) systems has been increasing. Several systems have been proposed employing a wide variety of location sensors, including the use of the LORAN-C radionavigation system. The LORAN-C system is described in detail and the operation of a LORAN-C receiver is explained.
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The Department of Transportation Loran-C study

IEEE 1998 Position Location and Navigation Symposium (Cat. No.98CH36153), 2002
The 1994 Federal Radionavigation Plan (FRP) stated that the US Department of Transportation (DOT) would terminate operation of the Loran-C radionavigation system no later than the end of the year 2000. In 1996, the US Congress directed the DOT to conduct a study of this decision, and to prepare a report to the Congress "defining the future use of and ...
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Fully Automatic Loran-C For Commercial Airlines

Navigation, 1974
this paper addresses one of the alternatives being considered by U. S. Airlines as a replacement for Loran–A in the event this service is discontinued. Loran–C coverage exists over a large portion of the airline route structure and the current evaluations are aimed at determining the suitability of Loran–C for airline service.
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LORAN-C on the Lower Great Lakes

Navigation, 1973
In 1970-71 a study of Loran-C reception and stability characteristics was carried out along the Lower Great Lakes. By setting up calibration stations for periods from 1 hour to 18 days between Eastern Lake Ontario and Western Lake Erie, measures were obtained of chain variability, instrument variability, signal strength and certain other effects ...
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