Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements
Considering the theoretical research needs of gravity gradient detection and navigation, this study uses the right rectangular prism method to calculate the disturbing gravity gradient from sea level anomalies in the range of 5° × 5° in the Kuroshio extension area of the western Pacific with large s...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/15/5758 |
| _version_ | 1797440632275337216 |
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| author | Pengfei Xian Bing Ji Shaofeng Bian Bei Liu |
| author_facet | Pengfei Xian Bing Ji Shaofeng Bian Bei Liu |
| author_sort | Pengfei Xian |
| collection | DOAJ |
| description | Considering the theoretical research needs of gravity gradient detection and navigation, this study uses the right rectangular prism method to calculate the disturbing gravity gradient from sea level anomalies in the range of 5° × 5° in the Kuroshio extension area of the western Pacific with large sea level anomalies. The disturbing gravity gradient is obtained in different directions within a depth of 50 m below the mean sea level based on the principle of the disturbing gravity gradient. The calculation results show that the sea level anomalies at local positions significantly impact the underwater gravity gradient measurements, with the maximum contribution exceeding 10 E and the maximum difference between different locations exceeding 20 E. The change of the sea level anomaly over time also significantly impacts the measurement of the underwater gravity gradient, with the maximum change value exceeding 20 E. The impact will have a corresponding change with the seasonal change of the sea level anomaly. Therefore, the underwater carrier needs to consider the disturbing gravity gradient caused by sea level anomalies when using the gravity gradient for underwater detection and navigation. |
| first_indexed | 2024-03-09T12:12:06Z |
| format | Article |
| id | doaj.art-b9a87754530c4840b885756bc08270e7 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T12:12:06Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-b9a87754530c4840b885756bc08270e72023-11-30T22:51:41ZengMDPI AGSensors1424-82202022-08-012215575810.3390/s22155758Influence of Sea Level Anomaly on Underwater Gravity Gradient MeasurementsPengfei Xian0Bing Ji1Shaofeng Bian2Bei Liu3Department of Navigation, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Navigation, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Navigation, Naval University of Engineering, Wuhan 430033, ChinaDepartment of Navigation, Naval University of Engineering, Wuhan 430033, ChinaConsidering the theoretical research needs of gravity gradient detection and navigation, this study uses the right rectangular prism method to calculate the disturbing gravity gradient from sea level anomalies in the range of 5° × 5° in the Kuroshio extension area of the western Pacific with large sea level anomalies. The disturbing gravity gradient is obtained in different directions within a depth of 50 m below the mean sea level based on the principle of the disturbing gravity gradient. The calculation results show that the sea level anomalies at local positions significantly impact the underwater gravity gradient measurements, with the maximum contribution exceeding 10 E and the maximum difference between different locations exceeding 20 E. The change of the sea level anomaly over time also significantly impacts the measurement of the underwater gravity gradient, with the maximum change value exceeding 20 E. The impact will have a corresponding change with the seasonal change of the sea level anomaly. Therefore, the underwater carrier needs to consider the disturbing gravity gradient caused by sea level anomalies when using the gravity gradient for underwater detection and navigation.https://www.mdpi.com/1424-8220/22/15/5758disturbing gravity gradientsea level anomalyright rectangular prismforward modeling |
| spellingShingle | Pengfei Xian Bing Ji Shaofeng Bian Bei Liu Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements Sensors disturbing gravity gradient sea level anomaly right rectangular prism forward modeling |
| title | Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements |
| title_full | Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements |
| title_fullStr | Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements |
| title_full_unstemmed | Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements |
| title_short | Influence of Sea Level Anomaly on Underwater Gravity Gradient Measurements |
| title_sort | influence of sea level anomaly on underwater gravity gradient measurements |
| topic | disturbing gravity gradient sea level anomaly right rectangular prism forward modeling |
| url | https://www.mdpi.com/1424-8220/22/15/5758 |
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