Approach to the Side-scan Sonar Data Storage Based on Spatial Database Technology
Side-scan sonar is a remote sensing technology for submarine geological and geomorphological information detection,which provides acoustic imaging of the bottom at rates of up to several thousand square kilometers a day.How to manage so abundant and tremendous data has become a new problem,urgently needs to be resolved.As side-scan sonar image,also known as sonograph has an inherent geometric distortion which is so-called slant-range effect.Otherwise,the original side-scan sonar image is characterized as an order of scanning lines,without geographical position integrity and scalability.All this requirements and factors are considered and the correction of slant range distortions is outlined.This approach provides a management mechanism of raster catalog for series of sonar images of a surveying zone.Against the efficiency problem of massive image data storage,a spatial database engine is improved from such aspects as tile size setting,image resampling also called pyramid creation and spatial index establishment and so on,so as to enhance performance and improve access rate.The fact is that it archived an ideal response time and is proved to be more effective.
Spatial Database Management Raster Catalog Side-scan sonar
Liu Ting Liu Renyi Yin Tianhe Liu Nan
P.O.Box154,Department of Earth Science,Zhejiang University,Hang Zhou,China,310027
国际会议
第16届国际地理信息科学与技术大会(16th International Conference on GeoInformatics and the Joint Conference)
广州
英文
2008-06-28（万方平台首次上网日期，不代表论文的发表时间）