Ocean Remote Sensing Using High-frequency and Microwave Radars

使用高频和微波雷达进行海洋遥感

• 批准号: 402313-2012
• 负责人: Huang, Weimin
• 金额: $ 1.53万
• 依托单位: Memorial University of Newfoundland
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=573239
• 关键词: Ocean; Remote; Sensing; Using; frequency

High frequency surface wave radar (HFSWR) and microwave nautical radar (MNR) are widely employed in ocean remote sensing. HFSWR provides sea surface current, wind, wave and target information "over the horizon" due to the interaction of HF radio and ocean gravity waves. Traditionally, HFSWR systems have been land-based; compact ship-borne HFSWR has also been used but is subject to distortion of the Doppler spectra due to platform motion. Most HFSWR systems in use rely on a monostatic configuration in which the transmitting and receiving components are at the same location. In order to reduce the cost and potentially improve coverage, research on operating HF radar bistatically - i.e. transmission and reception occur at different sites - is necessary. Sea surface information can also be retrieved from the MNR images that contain the spatial and temporal structure of the ocean surface. MNR provides sea surface information with better range resolution but has limited coverage. In order to provide real-time information for applications in areas such as search and rescue, oil spill control and marine navigation, MNR needs to be further investigated. A long-term goal of this research program is to integrate HFSWR and MNR into a comprehensive coastal ocean observation network in Eastern Canada. To help achieve this, we will address issues associated with HFSWR antenna motion and the extraction of sea surface information from MNR data. The research will seek to (1) gain an improved understanding of HF radio wave scattering from the ocean surface and to further develop theoretical models and application algorithms for HFSWR ocean remote sensing; and (2) explore the methods of sea surface current fields, wave information extraction and target surveillance from MNR images for possible data fusion with HFSWR results. Our research will add knowledge to key theoretical and applied areas in ocean remote sensing. It will lead to an improvement in marine safety and provide ocean surface data products that do not presently exist in Canada. In doing so, we will meet the ongoing needs of the Department of National Defence, Fisheries and Oceans Canada, the Canadian Coast Guard and other marine stakeholders.

高频表面波雷达（HFSWR）和微波航海雷达（MNR）在海洋遥感中得到了广泛的应用。HFSWR通过高频无线电和海洋重力波的相互作用，提供“地平线以上”的海流、风、波和目标信息。传统上，HFSWR系统是陆基的；紧凑型船载HFSWR也已被使用，但由于平台运动而受到多普勒频谱失真的影响。使用中的大多数HFSWR系统依赖于单站配置，其中发射和接收组件位于同一位置。为了降低成本并潜在地提高覆盖范围，有必要研究双静态操作高频雷达，即在不同站点进行发射和接收。海洋表面信息也可以从包含海洋表面时空结构的多磁共振图像中检索。MNR提供的海面信息具有较好的距离分辨率，但覆盖范围有限。为了为搜救、溢油控制和海上航行等领域的应用提供实时信息，需要进一步研究MNR。