Detection of diffuse seafloor venting using a structured light laser sensor: 2. Evaluation of detection sensitivity and limitations

Detection of diffuse seafloor venting using a structured light laser sensor: 2. Evaluation of detection sensitivity and limitations
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使用结构光激光传感器检测海底扩散通风:2. 检测灵敏度和局限性的评估

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发表时间:
2017
期刊:
影响因子:
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通讯作者:
C. Roman
C. Roman
中科院分区:
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文献类型:
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作者:
C. Smart;C. Roman

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使用结构光激光传感器探测扩散热液喷口流体的算法已被证明是成功的。然而,潜在的限制,由于调查参数,包括高度和车辆航向,尚未探讨,是本研究的重点。从12个调查的数据进行了分析,在一个单一的热液喷口在三个不同的高度(2.7米,4.2米,6.2米)和四个不同的标题。增加测量高度会降低成像激光线的分辨率和强度;因此,提出了与距离相关的处理考虑因素,以保持检测灵敏度。对这些调查的分析表明,从调查高度到6米,喷口探测能力的退化极小。此外,由于所检测到的畸变模式的形状和位置随测量航向和高度而变化,因此它们可作为羽流形状和上升高度的潜在指示。距离和测量航向的影响对于这种传感器的未来应用是重要的,其中可能包括从更高、更快飞行的自主水下航行器进行测量。
Algorithms to detect diffuse hydrothermal vent fluids using the structured light laser sensor have proven to be successful. However, potential limitations due to survey parameters, including altitude and vehicle heading, have not been explored and are the focus of this study. Data from 12 surveys conducted over a single hydrothermal vent at three different altitudes (2.7 m, 4.2 m, and 6.2 m) and four different headings are analyzed. Increasing survey altitude decreases the resolution and intensity of the imaged laser line; therefore, range‐dependent processing considerations to maintain detection sensitivity are presented. Analysis of these surveys suggests minimal degradation of vent detection capabilities from survey altitudes up to 6 m. Additionally, as the shape and location of the detected distortion patterns vary with survey heading and altitude they are presented as potential indications of plume shape and rise height. The effects of range and survey heading are important for future applications of this sensor which may include surveying from higher, faster flying autonomous underwater vehicles.
DOI: 10.1038/ncomms1636
发表时间: 2012-01-10
影响因子: 16.6
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