基于GLCM衍生的纹理特征的海洋雷达图像序列的海面风速检索
Hui Wang1, Haiyang Qiu1, Lei Wang2
1School of Low-Altitude Equipment and Intelligent Control, Guangzhou Maritime University, Guangzhou 510725, China.
Entropy (Basel, Switzerland)
|August 28, 2025
概括
这项研究引入了一种使用X波段海洋雷达和纹理特征测量海面风速的新方法. 与传统模型相比,这种新方法提高了准确性和适用性.
科学领域:
- 海洋气象学
- 遥感技术
- 海洋学
背景情况:
- 海面风速对于海上安全和离岸作业至关重要.
- 现有的雷达风速检索方法缺乏适应性和准确性.
- 经验模型在一般化和精确性方面存在困难.
研究的目的:
- 使用X波段海洋雷达开发一种新的海面风速检索方法.
- 为了提高准确性,利用灰度共发生矩阵 (GLCM) 的纹理特征.
- 提高风速估计的环境适应性和适用性.
主要方法:
- 使用X波段海洋雷达图像序列来检索风速.
- 应用了三个阶段的预处理管道:噪声抑制,几何校正和插入.
- 提取风线和分析GLCM纹理特征 (能量和).
- 根据已识别的特征开发了一个细分的双参数风速模型.
主要成果:
- 拟议的基于质感的GLCM模型显著优于传统的经验模型.
- 能量和模型将平均误差分别降低了49.3%和16.7%.
- 能量稳定模型实现了高相关系数 (0.89);模型在低风速时表现出色.
结论:
- 新的基于纹理的GLCM方法为海面风速检索提供了更准确和更有效的解决方案.
- 分段式双参数模型在不同的环境条件下增强了稳定性.
- 这种方法为海洋气象学和相关应用提供了宝贵的进步.
相关概念视频
Precipitation Gravimetry
7.4K
Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
In determining nickel by gravimetric analysis, a precipitant of ethanolic dimethylglyoxime is added to a hot nickel salt solution. This is quickly followed by the dropwise addition of dilute ammonia solution until precipitation occurs. A...
7.4K
Boundary Layer Characteristics
215
When a fluid encounters a solid surface, a boundary layer forms due to the interaction between the fluid's motion and the stationary surface. This phenomenon is characterized by a thin region adjacent to the surface where viscous forces dominate, influencing the fluid's velocity profile. The development of the boundary layer begins at the leading edge of the surface and evolves as the fluid moves downstream.As the fluid flows over the surface, friction between the fluid and the wall slows down...
215
Methods of Obtaining Topography
116
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
116
Average and Instantaneous Velocity Vectors
7.0K
To calculate other physical quantities in kinematics, the time variable must be introduced. The time variable not only allows us to state where an object is (its position) during its motion, but also how fast it’s moving. The speed at which an object is moving is given by the rate at which the position changes with time. For each position, a particular time is assigned. If the details of the motion at each instant are not important, the rate is usually expressed as the average velocity v.
7.0K


