作业过程中，技术人员借助望远镜对无人船航行路线进行实时巡视，密切关注周边船舶、浮标、渔 网、礁石等潜在风险，全面保障了任务安全、有序推进。 近日，自然资源部宁波海洋中心测绘遥感室的技术团队在浙江舟山近岸海域，运用无人船搭载多波 束测深系统，完成了一次海滩剖面地形测量任务，显著提升了作业效率和安全性。 以往，这类测量多依赖人工操作，不仅效率低，也常伴随安全风险。为此，技术团队引入无人船系 统，通过遥控终端与岸基系统的实时联动，全程监控船只航迹与数据流。无人船能够灵活适应复杂岸线 变化与海况波动，精准控制测量路径。其所搭载的多波束系统，如同"水下CT"，对海底地形实施全覆 盖、高密度扫测，一次获取了大量精细、可靠的水下地形数据。 此次测量不仅是新装备与新技术的结合，更标志着无人船在地形测绘领域业务化应用的突破。所获 数据将为海岸线变迁分析、风暴潮灾害评估等实际工作提供重要支撑，有效提升了海洋测绘工作的生产 效率与成果精度。本次任务展现了智能化装备在海洋测绘中的突出优势，也为后续相关工作开展积累了 经验。 ...

本报讯(记者杨民仆)"十四五"以来，江苏省财政厅累计安排资金1.3亿元支持自然资源部门向海图强，获 取我省近海海域水下地理信息数据，筑牢海洋开发利用的"数据基石"。 这些数据，为海岸带生态修复、临海产业空间选址等提供了精细化的时空数据支撑。在海岸带安全屏障 建设领域，成果为全省海堤全线提标工程方案研究提供高精度地形数据支撑，通过数据对比分析了近岸 地形变化、滩面下蚀情况，显著提升工程规划方案的科学性与安全性，为筑牢抵御风暴潮灾害的"海上 长城"奠定坚实基础。 "十四五"以前，我省近海海域水下精确地形数据空缺。项目团队攻坚克难，历史性突破近海复杂地形测 量的技术瓶颈，首次成功获取了连云港、南通等地区2.1万平方千米水下地理信息数据与关键海图要 素。累计完成水下地形测量测线长度达14.1万余千米，相当于绕地球赤道三周半，形成了一系列精度达 厘米级的水下地形成果。 ...

Core Viewpoint - The project aims to unify the historical reference benchmarks of tidal stations with the 1985 National Elevation Benchmark, enhancing the accuracy and reliability of elevation control systems for various applications [1] Group 1: Project Overview - The project involves the technical design review of the tidal station leveling measurement service for six stations: three on land (Gaolan, Dongping, Shapa) and three on islands (Guishan, Shangchuan Island, and Wailianding) [1] - The review meeting was organized by the Zhuhai Ocean Center of the Ministry of Natural Resources, with participation from various expert units [1] Group 2: Technical Significance - The project employs global navigation satellite system elevation measurement and leveling methods to accurately transfer the 1985 National Elevation Benchmark to the six tidal stations [1] - The project is recognized for its advanced precision indicators, which are considered to be at a leading level domestically [1] Group 3: Applications and Recommendations - The unified and high-precision elevation control results will support core activities such as marine disaster prevention, ecological monitoring, and natural resource management [1] - Experts recommend promoting and applying the project results due to its significant theoretical and practical value [1]

Core Viewpoint - The article highlights the evolution and technological advancements of Ningbo Shanghang Surveying and Mapping Co., Ltd. (Shanghang Surveying) in the field of marine surveying, showcasing its transition from traditional methods to modern, high-precision techniques that significantly enhance operational efficiency and data accuracy [2][4][10]. Group 1: Technological Advancements - Shanghang Surveying has developed proprietary software for magnetic anomaly inversion, achieving a positioning accuracy within 5 centimeters for underwater cable surveys [2]. - The company transitioned from manual depth measurement methods to advanced technologies such as multi-beam sonar and unmanned vessels, completing in one day what previously took weeks [2][5]. - The integration of drone technology with unmanned boats has improved surveying precision from meter-level to centimeter-level, enabling real-time data transmission and 3D modeling [6][9]. Group 2: Historical Context - The company’s history dates back to 1984, when traditional methods relied on lead weights for depth measurement, which were inefficient and inaccurate [4]. - The introduction of microwave positioning technology in the 1990s marked a significant turning point, allowing for precise positioning of construction vessels [4]. - By the 21st century, the advent of global positioning systems revolutionized the industry, reducing the manpower required for surveying tasks [5]. Group 3: Contributions to Industry - Shanghang Surveying has played a crucial role in various port construction projects, both domestically and internationally, including in Cambodia and Uruguay, enhancing maritime safety and operational efficiency [6][9]. - The company has developed patented technologies that support coastal water quality monitoring and pollution prevention, contributing to environmental sustainability [9]. - Its innovations have positioned Shanghang Surveying as a leader in the marine surveying sector, transitioning from a service provider to a standard setter in the industry [7][10]. Group 4: Future Directions - The company is leveraging digital twin technology and big data analytics to enhance urban planning and environmental monitoring, showcasing its commitment to integrating advanced technologies into its operations [11][12]. - The launch of the "Comprehensive Information Management System" aims to provide real-time monitoring for port operations, further solidifying its role in the digital transformation of the marine surveying industry [12].