期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2008
卷号：XXXVII-B8
页码：1299-1304
出版社：Copernicus Publications
摘要：At present there is no single technology that can measure both terrain heights and water depths to a suitable level of accuracy and density for applications such as storm surge modelling and coastal inundation studies. Conventional topographic LIDAR systems have been designed for measuring high resolution terrain heights, but they do not have the ability to penetrate water to yield bathymetric results. Bathymetric LIDAR systems have been specifically developed to measure water depth and can also measure terrain heights, but with typically lower accuracy and spatial resolution than available from the topographic equivalent. A further limitation of all bathymetric LIDAR systems is their inability to measure depths where the water is cloudy or turbid. Of particular importance to this project is the fact that bathymetric LIDAR systems cannot acquire dependable bathymetric data in the near-shore or surf zone. Accordingly, there is frequently a discontinuity between terrain height data acquired by topographic LIDAR systems and water depth data collected by bathymetric LIDAR systems. The height datums used by such systems also tend to be inconsistent in terms of the way they are realised, creating further difficulties when endeavouring to integrate the respective data sets. The Cooperative Research Centre of Spatial Information has been working with the Victorian Department of Sustainability and Environment on a pilot project to investigate issues and technical challenges that are faced in the development of a continuous LIDAR based terrain model that traverses the littoral zone. This paper summarises the results of this pilot project, which has been based on topographic and bathymetric LIDAR data collected over the southern part of Port Phillip Bay, Victoria, Australia
