Coverage and Performance Predictions for the North-West European Loran-C System

In 1991 six European nations, Denmark, France, Germany, Ireland, The Netherlands and Norway, agreed to co-operate in deploying a Loran-C system to cover North-West Europe and the North Atlantic Ocean. The system will comprise 9 stations arranged in 4 chains. In estimating the coverage which will be...

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Published in:SIMULATION
Main Authors: Last, David, Searle, Mark, Farnworth, Richard
Format: Article in Journal/Newspaper
Language:English
Published: SAGE Publications 1993
Subjects:
Online Access:https://doi.org/10.1177/003754979306000504
https://journals.sagepub.com/doi/pdf/10.1177/003754979306000504
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author Last, David
Searle, Mark
Farnworth, Richard
author_facet Last, David
Searle, Mark
Farnworth, Richard
author_sort Last, David
collection SAGE Publications
container_issue 5
container_start_page 318
container_title SIMULATION
container_volume 60
description In 1991 six European nations, Denmark, France, Germany, Ireland, The Netherlands and Norway, agreed to co-operate in deploying a Loran-C system to cover North-West Europe and the North Atlantic Ocean. The system will comprise 9 stations arranged in 4 chains. In estimating the coverage which will be provided, the effects of signal attenuation, atmospheric noise, carrier- wave interference, skywave propagation, the change of envelope-to-cycle difference with range and transmitter timing uncertainty ,have all been taken into account. Contours of repeatable accuracy have been predicted for both conventional hyperbolic receivers, which employ the signals of a master and two secondary stations of a single Loran-C chain, and receivers which work in the semi-circular, cross-chain and master-independent modes. A standard receiver with specified bandpass, notch filter and tracking loop characteristics has been adopted as the basis for coverage and performance assessment. Further, in a rigorous search was carried out forgroup repetition interval (GRI) values which minimised the numbers of synchronous and near-synchronous interferers in the area covered by each chain. The very substantial variations of coverage with choice of GRI were explored and optimal GRI values selected.
format Article in Journal/Newspaper
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geographic Loran
Norway
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volume 60, issue 5, page 318-326
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spelling crsagepubl:10.1177/003754979306000504 2025-04-06T15:00:31+00:00 Coverage and Performance Predictions for the North-West European Loran-C System Last, David Searle, Mark Farnworth, Richard 1993 https://doi.org/10.1177/003754979306000504 https://journals.sagepub.com/doi/pdf/10.1177/003754979306000504 en eng SAGE Publications https://journals.sagepub.com/page/policies/text-and-data-mining-license SIMULATION volume 60, issue 5, page 318-326 ISSN 0037-5497 1741-3133 journal-article 1993 crsagepubl https://doi.org/10.1177/003754979306000504 2025-03-09T10:14:39Z In 1991 six European nations, Denmark, France, Germany, Ireland, The Netherlands and Norway, agreed to co-operate in deploying a Loran-C system to cover North-West Europe and the North Atlantic Ocean. The system will comprise 9 stations arranged in 4 chains. In estimating the coverage which will be provided, the effects of signal attenuation, atmospheric noise, carrier- wave interference, skywave propagation, the change of envelope-to-cycle difference with range and transmitter timing uncertainty ,have all been taken into account. Contours of repeatable accuracy have been predicted for both conventional hyperbolic receivers, which employ the signals of a master and two secondary stations of a single Loran-C chain, and receivers which work in the semi-circular, cross-chain and master-independent modes. A standard receiver with specified bandpass, notch filter and tracking loop characteristics has been adopted as the basis for coverage and performance assessment. Further, in a rigorous search was carried out forgroup repetition interval (GRI) values which minimised the numbers of synchronous and near-synchronous interferers in the area covered by each chain. The very substantial variations of coverage with choice of GRI were explored and optimal GRI values selected. Article in Journal/Newspaper North Atlantic SAGE Publications Loran ENVELOPE(-55.609,-55.609,52.249,52.249) Norway SIMULATION 60 5 318 326
spellingShingle Last, David
Searle, Mark
Farnworth, Richard
Coverage and Performance Predictions for the North-West European Loran-C System
title Coverage and Performance Predictions for the North-West European Loran-C System
title_full Coverage and Performance Predictions for the North-West European Loran-C System
title_fullStr Coverage and Performance Predictions for the North-West European Loran-C System
title_full_unstemmed Coverage and Performance Predictions for the North-West European Loran-C System
title_short Coverage and Performance Predictions for the North-West European Loran-C System
title_sort coverage and performance predictions for the north-west european loran-c system
url https://doi.org/10.1177/003754979306000504
https://journals.sagepub.com/doi/pdf/10.1177/003754979306000504