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首页> 外文期刊>Advances in Remote Sensing >A Synoptic Review on Deriving Bathymetry Information Using Remote Sensing Technologies: Models, Methods and Comparisons
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A Synoptic Review on Deriving Bathymetry Information Using Remote Sensing Technologies: Models, Methods and Comparisons

机译：使用遥感技术推导浴室信息的概要审查：模型，方法和比较

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This paper discusses the bathymetric mapping technologies by means of satellite remote sensing (RS) with special emphasis on bathymetry derivation models, methods, accuracies, advantages, limitations, and comparisons. Traditionally, bathymetry can be mapped using echo sounding sounders. However, this method is constrained by its inefficiency in shallow waters and very high operating logistic costs. In comparison, RS technologies present efficient and cost-effective means of mapping bathymetry over remote and broad areas. RS of bathymetry can be categorised into two broad classes: active RS and passive RS. Active RS methods are based on active satellite sensors, which emit artificial radiation to study the earth surface or atmospheric features, e.g. light detection and ranging (LIDAR), polarimetric synthetic aperture radar (SAR), altimeters, etc. Passive RS methods are based on passive satellite sensors, which detect sunlight (natural source of light) radiation reflected from the earth and thermal radiation in the visible and infrared portion of the electromagnetic spectrum, e.g. multispectral or optical satellite sensors. Bathymetric methods can also be categorised as imaging methods and non-imaging methods. The non-imaging method is elucidated by laser scanners or LIDAR, which measures the distance between the sensor and the water surface or the ocean floor using a single wave pulse or double waves. On the other hand, imaging methods approximate the water depth based on the pixel values or digital numbers (DN) (representing reflectance or backscatter) of an image. Imaging methods make use of the visible and/or near infrared (NIR) and microwave radiation. Imaging methods are implemented with either analytical modelling or empirical modelling, or by a blend of both. This paper presents the development of bathymetric mapping technology by using RS, and discusses the state-of-the-art bathymetry derivation methods/algorithms and their implications in practical applications.
机译：本文通过卫星遥感（RS）讨论了浴室映射技术（RS），特别强调了沐浴衍生模型，方法，准分性，优点，限制和比较。传统上，可以使用回声探测探测器映射沐浴浴。然而，这种方法受到浅水区的低效率和非常高的运营物流成本限制。相比之下，RS技术目前在远程和广域地区绘制浴池的高效和成本效益手段。浴rs可以分为两个广泛的课程：活动卢比和被动卢比。活性RS方法基于有源卫星传感器，其发出人工辐射，以研究地球表面或大气特征，例如，光检测和测距（LIDAR），Polarimetric合成孔径雷达（SAR），高度计等被动RS方法基于被动卫星传感器，检测从地球和可见光中的热辐射反射的阳光（自然光源）辐射和电磁谱的红外线部分，例如多光谱或光学卫星传感器。碱化方法也可以被分类为成像方法和非成像方法。通过激光扫描仪或激光器阐明非成像方法，其使用单波脉冲或双波测量传感器和水面或海底之间的距离。另一方面，成像方法基于图像的像素值或数字数字（DN）（表示反射率或反向散射）近似于图像的水深。成像方法使用可见和/或近红外（NIR）和微波辐射。成像方法用分析建模或经验建模实现，或两者的混合来实现。本文介绍了通过使用RS的碱基测绘技术的发展，并讨论了最先进的沐浴衍生方法/算法及其在实际应用中的影响。

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