共查询到18条相似文献,搜索用时 46 毫秒
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本文叙述了影响遥感海洋要素的大气参数——透过率和程辐射强度的定量测量原理和方法,并列举了四个谱段的测量实例。结果表明,这种测量方法是可行的,所测大气参数对定量分析遥感海洋要素是有意义的。 相似文献
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海水温盐深剖面测量技术综述 总被引:1,自引:0,他引:1
温盐深是反应海洋物理学特性的重要参数,是海洋水文观测的基本要素。CTD剖面仪(Conductivity-Temperature-Depth profiler)是进行海水温盐剖面观测的主要仪器,利用CTD剖面仪可精确测得水下不同深度上海水的温度和电导率参数,进而能够推算出海水盐度、密度、声速等相关信息,对于海洋经济开发、海上国防建设、海洋环境保护等都具有非常重要的意义。本文介绍了温盐深剖面测量技术的基本原理与发展现状,对几种典型的温盐深测量设备及各种海洋观测平台中搭载的CTD传感器进行了介绍,论述了CTD传感器的标定和测试技术,并对其发展趋势进行了分析。 相似文献
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青岛地区太阳紫外线辐射研究 总被引:12,自引:0,他引:12
通过对青岛地区2004年全年紫外线观测数据的分析,在预设局地纬度、海拔高度、大气中臭氧量及其分布、空气质量状况、地表反照率等因素基本不变的情况下,总结了青岛地区紫外辐射随与太阳天顶角相关的不同季节和时段、天气状况(云况)的统计性变化规律,以服务于该地区人们日常生活中对紫外线的防护,尤其是为调光生态膜的研制及改善提供参考。 相似文献
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为更进一步认清国内外海洋重力测量技术的现状和发展趋势提供技术支撑,从海洋重力测量领域专利分析视角出发,在划分海洋重力测量关键技术分支,构建专利检索策略并开展全球范围专利检索的基础上,采用宏观到微观、定性与定量相结合的研究方法,对国内外该领域专利的布局特点、发展趋势、主要创新主体情况和高质量重点专利情况进行梳理研究,并对下一步海洋重力测量技术发展重点方向给出建议。研究结果可为我国海洋重力测量领域自主知识产权优化布局、自主创新能力提升和有关装备论证研制等提供技术支撑。 相似文献
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In this paper, we experimentally perform the measurement of the backscattered light intensity from the underwater targets with different size. We develop a simple system, which can easily measure the intensity of the backscattered light, after the laser is scattered at the target underwater. We find that, the signal period is related to the particle size, and the stability of the intensity (standard deviation) varies linearly with changing the particle size. After the calibration, our system can be used to precisely determine the particle size of arbitrary targets. Our method could open a new opportunity for the future underwater detection using femtosecond pulse laser. 相似文献
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水下光谱辐射测量技术 总被引:5,自引:0,他引:5
海水中的叶绿素、泥沙、黄色物质等及其含量直接影响海水的光谱特性。此外,海洋水色遥感算法的建立及验证也离不开现场相关光学参数的测量,准确的海水现场光谱辐射测量,是提高海洋水色定量化遥感精度的重要环节。文章通过开展水下光谱辐射测量方法的讨论、仪器总体方案的设计及相应的试验的结果分析,提出了有关水下光谱辐射测量仪器构成的一些想法。 相似文献
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要实现利用微波辐射计对海面溢油的厚度等参数进行遥感监测,必须先对水面油膜的微波辐射特性进行研究,以便为传感器的设计和遥感资料的解译提供依据。在实验室条件下,利用“灰体室”的环境条件及测量方法,测试了原油、燃料油和食用植物油膜的微波发射率与油膜厚度之间的关系,并对测量结果进行分析和讨论。为实际应用提供技术资料。 相似文献
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海水低浓度负二价硫传感器现场测量关键技术研究 总被引:1,自引:0,他引:1
通过对传感器敏感探头参比电极盐桥的改进,并在信号转换电路中引入锁相放大技术,使传感器整体性能提高,解决了海水负二价硫(S2-)低浓度(10-4~10-7mol/L)情况下的现场测量关键技术。 相似文献
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Bin Shi Hongzhong Xu Bin Chen Dan Zhang Yong Ding Heliang Cui Junqi Gao 《Marine Georesources & Geotechnology》2003,21(3):333-343
Taiwan Strait Tunnel (TST) will be an extra-long tunnel or tunnel-bridge complex, running over 150 km of seafloor geologic body with complicated topographic and geologic units. It is therefore necessary to measure and monitor the strain distribution along the TST. In this article, the Brillouin optical time-domain reflectometer (BOTDR), a newly developed strain measurement and monitoring technology, is introduced, and the feasibility of its application in the strain monitoring for TST is analyzed through the monitoring achievement with BOTDR of a tunnel located in Nanjing City, China. The results indicate that the BOTDR has many unique merits such as distributed measurement, long-distance, real-time, and resistibility for strain monitoring application in a tunnel such as TST. Finally, apreliminary scheme for BOTDR application in TST monitoring is proposed. 相似文献
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《Marine Georesources & Geotechnology》2013,31(3-4):333-343
Taiwan Strait Tunnel (TST) will be an extra-long tunnel or tunnel-bridge complex, running over 150?km of seafloor geologic body with complicated topographic and geologic units. It is therefore necessary to measure and monitor the strain distribution along the TST. In this article, the Brillouin optical time-domain reflectometer (BOTDR), a newly developed strain measurement and monitoring technology, is introduced, and the feasibility of its application in the strain monitoring for TST is analyzed through the monitoring achievement with BOTDR of a tunnel located in Nanjing City, China. The results indicate that the BOTDR has many unique merits such as distributed measurement, long-distance, real-time, and resistibility for strain monitoring application in a tunnel such as TST. Finally, apreliminary scheme for BOTDR application in TST monitoring is proposed. 相似文献