Results 141 to 150 of about 1,504 (173)

Loran-C: Present and Future*

Navigation, 1982
Since its inception, the Loran-C Radionavigation System has expanded, and now covers much of the Northern Hemisphere. Coast Guard plans concerning past Loran-C expansion are discussed, as well as the Loran-C user education program, and efforts to verify the accuracy of the system. Plans for possible future expansion and use of Loran-C are also outlined.
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Microminiature Loran-C Receiver/Indicator

IEEE Transactions on Aerospace and Electronic Systems, 1966
A Loran-C Receiver is used as an example to show how an analog system could be converted to a digital one to take advantage of the expanding integrated circuit technology. The digital equivalents of the analog servo elements are described. Criteria for the design of a phase-tracking servomechanism is developed in detail.
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Loran-C Chain and UTC Synchronisation

Journal of Navigation, 2000
There has been much discussion recently implying that Loran-C chain synchronisation using ‘System Area Monitor’ (SAM) control and using ‘Time of Transmission (or Emission)’ (TOT or TOE) are incompatible mechanisations of Loran-C chain time management because of their differing impact on users.
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An Advanced LORAN-C Receiver Structure

SIMULATION, 1993
In this paper, a new LORAN-C receiver structure is proposed that is capable of reducing the influence of multipath and interference. In addition, it has the advantage of fast acquisition, since all the estimation processes are performed simultaneously instead of sequentially.
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Blinking Detection Methods for Loran-C

Journal of Navigation, 1994
To ensure integrity of the Loran-C radionavigation system during non-precision approaches, an automatic blinking system notifies the user when the system is not functioning within specifications. To be certain that timely detection of this blinking can be guaranteed, one of the requirements imposed on an airborne Loran-C receiver is that it should flag
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The Evolution of Loran-C Coverage

Navigation, 1982
This paper addresses the evolution of Loran-C signal coverage worldwide with comments on where such coverages may be expected to be implemented in the near future. Also addressed are privately operated Loran-C type systems and new system applications for Loran-C such as the Suez Canal Vessel Traffic System which may provide impetus for further ...
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Navigation and Control from Loran-C

Navigation, 1964
The position fixing capability of the Loran system has been well recognized for use in transport aircraft as a navigation system monitor. The role of Loran-C as a navigation and control system has not been recognized, however, primarily because of the unwieldly time difference coordinates of the system.
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Rho-Rho Loran-C for Offshore Surveys

The Canadian Surveyor, 1972
Using atomic clocks, the United States Coast Guard has recently pioneered a precise distance measuring version of Loran-C, for positioning by two ranges when within about 1,700 km of the transmitters. In May 1971 the authors took advantage of the calibrated Decca Lambda survey chain, being used by the CSS Baffin on the Grand Banks of Newfoundland, to ...
R. M. Eaton, S. T. Grant
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Loran-C Sky-Wave Delay Measurements

IEEE Transactions on Instrumentation and Measurement, 1968
Operational tests were conducted using simple visual receiving equipment to determine the consistency of the apparent times of arrival of Loran-C sky-wave signals at ranges from 1000 to 6000 km. Measurements were made from St. Thomas, Bermuda, and the Boston area, and comparison with ground-wave times of arrival were made using automatic receivers ...
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LORAN-C in the 21st Century

IEEE Aerospace and Electronic Systems Magazine, 1987
LORAN, which stands for long range navigation, was first brought into service during World War II. Its earliest form, LORAN-A, served us well up to the time the last station was taken off the air in December 1980. It was succeeded by LORAN-C as part of the Department of Defense's program to develop a new generation of radionavigation aids.
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