| WANG Li,WU Xiongbin,PI Xiaoshan,MA Ketao,LIU Jianfei,TIAN Yun. 2015. Numerical simulation and inversion of offshore area depth based on x-band microwave radar. Acta Oceanologica Sinica, 34(3):108－114 |
| Numerical simulation and inversion of offshore area depth based on x-band microwave radar |
| 基于X波段微波雷达的近海水深数值模拟与反演 |
| Received:February 28, 2014 Revised:May 27, 2014 |
| DOI：10.1007/s13131-015-0627-7 |
| Key words:microwave radar offshore area depth JONSWAP model numerical simulation liner wave theorem |
| 中文关键词: 微波雷达，近海水深，数值模拟，JONSWAP模型，线性波理论 |
| 基金项目: |
| Author Name | Affiliation | E-mail | | WANG Li | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | | | WU Xiongbin | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | xbwu@whu.edu.cn | | PI Xiaoshan | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | | | MA Ketao | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | | | LIU Jianfei | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | | | TIAN Yun | Radio Oceanography Laboratory, School of Electronic Information, Wuhan University Wuhan 430079, China | |
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| Abstract: |
| A detection method of offshore area depth utilizing the x-band microwave radar is proposed. The method is based on the sea clutter imaging mechanism of microwave radar, and combined with dispersion equation of the liner wave theorem and least square method (LSM), consequently get the inversion results of water depth in the detected region. The wave monitoring system OSMAR-X exploited by the Ocean State Laboratory, Wuhan University, based on a microwave radar has proven to be a powerful tool to monitor ocean waves in time and space. Numerical simulation and inversion of offshore area depth are carried out here; since JONSWAP model can give description of stormy waves in different growth phase, it is suitable for simulation. Besides, some results from measured data detected by OSMAR-X x-band radar located at Longhai of Fujian Province, China, validates this method. The tendency of the average water depths inferred from the radar images is in good agreement with the tide level detected by Xiamen tide station. These promising results suggest the possibility of using OSMAR-X to monitor operationally morphodynamics in coastal zones. This method can be applied to both shore-based and shipborne x-band microwave radar. |
| 中文摘要: |
| 根据海浪频谱模型,对浅海水深进行了数值模拟,提出一种利用X波段微波雷达对近海水深进行探测的方法。该方法利用X波段微波雷达对海杂波成像，结合线性波理论色散方程以及最小二乘算法，可以得到雷达探测区域的水深信息。由武汉大学海态实验室研制的OSMAR-X型雷达是在微波雷达基础上进行改进的测波雷达，现已被证明为一种监测海洋空时状态有效的手段。本文进行了近海水深的数值模拟与反演研究，由于JONSWAP 谱可以描述不同成长阶段的风浪，适合本文不同水深下海浪回波的模拟。文中还给出了位于福建省龙海市的OSMAR-X型测波雷达实测数据的初步分析对比结果，验证了该方法的可行性。该探测方法不仅适用于岸基X波段微波雷达，还适用于船载X波段微波雷达。 |
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