A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients
An understanding of land and sea surface backscatter coefficients at high frequencies (HF) is required to accurately assess ionospheric propagation conditions for over-the-horizon radar. In this paper, two methods of calculating sea surface backscatter coefficients are compared. The first method is...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/9/2139 |
| _version_ | 1797503046113034240 |
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| author | Danielle Edwards Manuel Cervera Andrew MacKinnon |
| author_facet | Danielle Edwards Manuel Cervera Andrew MacKinnon |
| author_sort | Danielle Edwards |
| collection | DOAJ |
| description | An understanding of land and sea surface backscatter coefficients at high frequencies (HF) is required to accurately assess ionospheric propagation conditions for over-the-horizon radar. In this paper, two methods of calculating sea surface backscatter coefficients are compared. The first method is a theoretical method developed by Barrick in 1972, which treats the sea as a slightly rough surface defined by a wave height spectrum and uses a perturbation approach. The second method compares the difference between observed and modelled backscatter ionograms in which all other losses are accounted for to obtain a measurement of the sea surface backscatter coefficient. Similar trends and values for the sea surface backscatter coefficients from each method were found despite the many models and assumptions required for both these methods. However, it was noted that there was a larger range of values for the sea surface backscatter coefficients when the Barrick method was used. |
| first_indexed | 2024-03-10T03:44:54Z |
| format | Article |
| id | doaj.art-60037288214e4448b4413f2a89290fe6 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T03:44:54Z |
| publishDate | 2022-04-01 |
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| series | Remote Sensing |
| spelling | doaj.art-60037288214e4448b4413f2a89290fe62023-11-23T09:11:11ZengMDPI AGRemote Sensing2072-42922022-04-01149213910.3390/rs14092139A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter CoefficientsDanielle Edwards0Manuel Cervera1Andrew MacKinnon2Defence Science and Technology Group, Edinburgh 5111, AustraliaDefence Science and Technology Group, Edinburgh 5111, AustraliaSchool of Physical Sciences, The University of Adelaide, Adelaide 5005, AustraliaAn understanding of land and sea surface backscatter coefficients at high frequencies (HF) is required to accurately assess ionospheric propagation conditions for over-the-horizon radar. In this paper, two methods of calculating sea surface backscatter coefficients are compared. The first method is a theoretical method developed by Barrick in 1972, which treats the sea as a slightly rough surface defined by a wave height spectrum and uses a perturbation approach. The second method compares the difference between observed and modelled backscatter ionograms in which all other losses are accounted for to obtain a measurement of the sea surface backscatter coefficient. Similar trends and values for the sea surface backscatter coefficients from each method were found despite the many models and assumptions required for both these methods. However, it was noted that there was a larger range of values for the sea surface backscatter coefficients when the Barrick method was used.https://www.mdpi.com/2072-4292/14/9/2139backscatter coefficienthigh-frequency radarover-the-horizon radar |
| spellingShingle | Danielle Edwards Manuel Cervera Andrew MacKinnon A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients Remote Sensing backscatter coefficient high-frequency radar over-the-horizon radar |
| title | A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients |
| title_full | A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients |
| title_fullStr | A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients |
| title_full_unstemmed | A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients |
| title_short | A Comparison of the Barrick and Backscatter Ionogram Methods of Calculating Sea Surface Backscatter Coefficients |
| title_sort | comparison of the barrick and backscatter ionogram methods of calculating sea surface backscatter coefficients |
| topic | backscatter coefficient high-frequency radar over-the-horizon radar |
| url | https://www.mdpi.com/2072-4292/14/9/2139 |
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