Loran-C Sky-Wave Delay Measurements
- 1 December 1968
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Instrumentation and Measurement
- Vol. 17 (4) , 366-372
- https://doi.org/10.1109/tim.1968.4313736
Abstract
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 where available. Time-of-arrival consistency was observed to be within ±20 μs. The predictability of propagation delays, based on U.S. Naval Observatory estimated ground-wave delays, modified by sky-wave corrections published by the U. S. Naval Hydrographic Office, is discussed in connection with precise long-range clock synchronization using visual Loran-C equipment.Keywords
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