| 北斗反射信号海风海浪反演系统与试验 |
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| 引用本文： | 杨东凯, 王翔宇, 刘建华, 王峰. 北斗反射信号海风海浪反演系统与试验[J]. 电子与信息学报, 2019, 41(2): 317-323. doi: 10.11999/JEIT180397 |
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| 作者姓名： | 杨东凯 王翔宇 刘建华 王峰 |
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| 作者单位： | 1.北京航空航天大学电子信息工程学院 北京 100083;;2.胜利油田安全环保督查中心 东营 257000 |
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| 基金项目： | 国家自然科学基金;国家重点研发计划 |
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| 摘 要： | 该文设计并实现了一种小型低功耗的北斗反射信号海风海浪反演系统，针对反演精度受卫星高度角影响较大的问题，提出高度角正弦值幂指数修正方法，且为降低风速突变对风速反演的影响，对风速反演模型进行了延时修正，有效提高了有效波高和风速的反演精度。为了进一步提高反演精度，提出多星联合观测和单边滤波的方法。北斗反射信号海风海浪探测试验结果表明：设计和实现的反演系统具备长期稳定运行和观测的性能；提出的反演模型和精度提升方法可以有效提高反演精度，有效波高和风速反演精度分别可达0.14 m和1.28 m/s，相比于Soulat等人提出的反演模型，分别提高了0.13 m和0.78 m/s。
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| 关 键 词： | 北斗反射信号 海风海浪反演 高度角修正 多星观测 单边滤波 |
| 收稿时间： | 2018-04-27 |
| 修稿时间： | 2018-09-10 |
BeiDou-reflectometry Sea Wind and Wave Retrieval System and Experiment |
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| Dongkai YANG, Xiangyu WANG, Jianhua LIU, Feng WANG. BeiDou-reflectometry Sea Wind and Wave Retrieval System and Experiment[J]. Journal of Electronics & Information Technology, 2019, 41(2): 317-323. doi: 10.11999/JEIT180397 |
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| Authors: | Dongkai YANG Xiangyu WANG Jianhua LIU Feng WANG |
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| Affiliation: | 1. School of Electronic and Information Engineering, Beihang University, Beijing 100083, China;;2. Safety and Environmental Supervision Center, Shengli Oil Field, Dongying 257000, China |
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| Abstract: | A low power and cost BeiDou-reflectometry used to retrieve Significiant Wave Height (SWH) and wind is designed and implemented. To improve the retrieval accuracy, a correction method based on the power function of the elevation angle sinusoidal and a delay correlation for the rapid change of wind speed is proposed. Moreover, combined observation of multi-satellite signals and single-side filtering for the observable are performed to improve further the retrieval accuracy. The experiment results of observating SWH and wind speed using reflected BeiDou signals show that designed and developed system could implement long-term and stable observation; the retrieval accuracies of SWH and wind speed retrieved by propsoed retrieval models and improvement methods of the retreival accuracy are 0.13 m and 1.28 m/s which are 0.13 m and 0.78 m/s higher than the methods proposed by Soulat et al. |
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| Keywords: | Reflected BeiDou signals Wind speed and Significant Wave Height (SWH) retrieval Correction of elevation angle Multi-satellites observation Single-side filtering |
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