Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing
Various ships and submerged moving objects in the ocean are key targets of numerous remote sensors. Wake has developed into one of the key detection targets of ocean visible light remote sensing as the visible trail information left by moving objects on the ocean surface. In the situation of slow sh...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Remote Sensing |
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| Online Access: | https://www.mdpi.com/2072-4292/14/16/4054 |
| _version_ | 1797442250019438592 |
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| author | Shipeng Ying Hongsong Qu Shuping Tao Liangliang Zheng Xiaobin Wu |
| author_facet | Shipeng Ying Hongsong Qu Shuping Tao Liangliang Zheng Xiaobin Wu |
| author_sort | Shipeng Ying |
| collection | DOAJ |
| description | Various ships and submerged moving objects in the ocean are key targets of numerous remote sensors. Wake has developed into one of the key detection targets of ocean visible light remote sensing as the visible trail information left by moving objects on the ocean surface. In the situation of slow ship speed, deep draft, and the existence of air clouds and fog, the wake target signal is weak, and the signal-to-noise ratio is low due to the low reflectivity of the sea surface and the interference of the background waves on the sea surface. This paper analyzes the radiative sensitivity of visible light imaging systems for the most crucial wake detection indicator in order to address the aforementioned issues. The noise equivalent reflectance difference, which is widely used to describe radiative sensitivity in engineering, is derived and numerically simulated by establishing the imaging link model based on TDICCD. We calculated the noise equivalent reflectivity difference for eight bands commonly used in ocean remote sensing; results show that the index is generally on the order of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></semantics></math></inline-formula>, and with the increase in the central wavelength, the value of noise equivalent reflectance difference also shows a downward trend and is stable within a certain value range. This research provides theoretical guidance for the engineering design of a visible spectrum imaging system for wake detection, aids in improving the imaging system’s capacity to detect weak wake signals, and provides a basis for subsequent wake detection and enhancement processing, removal of false wakes, and retrieval of ship information. |
| first_indexed | 2024-03-09T12:39:06Z |
| format | Article |
| id | doaj.art-a22cdda20b554c8bae5c0046efd74aba |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-09T12:39:06Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-a22cdda20b554c8bae5c0046efd74aba2023-11-30T22:20:25ZengMDPI AGRemote Sensing2072-42922022-08-011416405410.3390/rs14164054Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote SensingShipeng Ying0Hongsong Qu1Shuping Tao2Liangliang Zheng3Xiaobin Wu4Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaChangchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaVarious ships and submerged moving objects in the ocean are key targets of numerous remote sensors. Wake has developed into one of the key detection targets of ocean visible light remote sensing as the visible trail information left by moving objects on the ocean surface. In the situation of slow ship speed, deep draft, and the existence of air clouds and fog, the wake target signal is weak, and the signal-to-noise ratio is low due to the low reflectivity of the sea surface and the interference of the background waves on the sea surface. This paper analyzes the radiative sensitivity of visible light imaging systems for the most crucial wake detection indicator in order to address the aforementioned issues. The noise equivalent reflectance difference, which is widely used to describe radiative sensitivity in engineering, is derived and numerically simulated by establishing the imaging link model based on TDICCD. We calculated the noise equivalent reflectivity difference for eight bands commonly used in ocean remote sensing; results show that the index is generally on the order of <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><msup><mrow><mn>10</mn></mrow><mrow><mo>−</mo><mn>4</mn></mrow></msup></mrow></semantics></math></inline-formula>, and with the increase in the central wavelength, the value of noise equivalent reflectance difference also shows a downward trend and is stable within a certain value range. This research provides theoretical guidance for the engineering design of a visible spectrum imaging system for wake detection, aids in improving the imaging system’s capacity to detect weak wake signals, and provides a basis for subsequent wake detection and enhancement processing, removal of false wakes, and retrieval of ship information.https://www.mdpi.com/2072-4292/14/16/4054wake detectionradiation sensitivitynoise equivalent reflectance difference |
| spellingShingle | Shipeng Ying Hongsong Qu Shuping Tao Liangliang Zheng Xiaobin Wu Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing Remote Sensing wake detection radiation sensitivity noise equivalent reflectance difference |
| title | Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing |
| title_full | Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing |
| title_fullStr | Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing |
| title_full_unstemmed | Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing |
| title_short | Radiation Sensitivity Analysis of Ocean Wake Information Detection System Based on Visible Light Remote Sensing |
| title_sort | radiation sensitivity analysis of ocean wake information detection system based on visible light remote sensing |
| topic | wake detection radiation sensitivity noise equivalent reflectance difference |
| url | https://www.mdpi.com/2072-4292/14/16/4054 |
| work_keys_str_mv | AT shipengying radiationsensitivityanalysisofoceanwakeinformationdetectionsystembasedonvisiblelightremotesensing AT hongsongqu radiationsensitivityanalysisofoceanwakeinformationdetectionsystembasedonvisiblelightremotesensing AT shupingtao radiationsensitivityanalysisofoceanwakeinformationdetectionsystembasedonvisiblelightremotesensing AT liangliangzheng radiationsensitivityanalysisofoceanwakeinformationdetectionsystembasedonvisiblelightremotesensing AT xiaobinwu radiationsensitivityanalysisofoceanwakeinformationdetectionsystembasedonvisiblelightremotesensing |