基于WorldView-2遥感影像的龙湾港浅海水深反演
发布时间：2018-10-11 10:23
【摘要】：根据遥感水深反演原理,利用海南岛龙湾港的World View-2多光谱卫星数据和海图水深资料,通过对水深进行0~2,2~5,5~10,10~15和15~20 m的分区处理、潮汐改正和海图水深数据与相应图像波段反射率值的相关性分析及回归分析,建立了浅海水深线性回归反演模型,开展了浅海水深的实际计算与精度分析。结果表明:对不同水深范围分别建立线性回归模型反演的水深精度要高于未分区建立的模型;分区模型中,多波段模型在0~5 m的反演精度最高,而双波段比值模型在5~20 m的反演精度最高,但是反演水深在最浅处的精度还有待提高。本文方法提取的水深与海图水深数据变化趋势基本相似,可以满足海洋科学研究对大范围浅水水下地形探测的要求。
[Abstract]:According to the principle of remote sensing water depth inversion, using the World View-2 multispectral satellite data of Longwan Port, Hainan Island and the bathymetric data of the chart, this paper deals with the water depth by dividing the water depth of 0 ~ 2 ~ 2 ~ 2 ~ 5 ~ 5 ~ 5 ~ 10 ~ 10 ~ 10 ~ 15 m and 15 ~ 20 m. The correlation analysis and regression analysis between the tidal correction and the depth data of the nautical chart and the reflectivity values of the corresponding image band are analyzed, and the linear regression inversion model of the shallow water depth is established, and the actual calculation and precision analysis of the shallow water depth are carried out. The results show that the inversion accuracy of the linear regression model for different water depth ranges is higher than that of the unzoned model, and the multi-band model has the highest inversion accuracy at 0 ~ 5 m in the zonal model. The inversion accuracy of the dual-band ratio model is the highest at 5 ~ 20 m, but the accuracy of the inversion depth at the shallowest point still needs to be improved. The variation trend of the bathymetric data extracted by this method is basically similar to that of the nautical chart, which can meet the requirements of marine scientific research for large-scale shallow water underwater topography detection.
【作者单位】： 上海海洋大学海洋科学学院;上海市海洋局河口海洋测绘工程技术研究中心;
【基金】：上海市科委基于国产高分辨率卫星的海洋测绘关键技术研究项目资助(14590502200)
【分类号】：P715.7
本文编号：2263841
[Abstract]:According to the principle of remote sensing water depth inversion, using the World View-2 multispectral satellite data of Longwan Port, Hainan Island and the bathymetric data of the chart, this paper deals with the water depth by dividing the water depth of 0 ~ 2 ~ 2 ~ 2 ~ 5 ~ 5 ~ 5 ~ 10 ~ 10 ~ 10 ~ 15 m and 15 ~ 20 m. The correlation analysis and regression analysis between the tidal correction and the depth data of the nautical chart and the reflectivity values of the corresponding image band are analyzed, and the linear regression inversion model of the shallow water depth is established, and the actual calculation and precision analysis of the shallow water depth are carried out. The results show that the inversion accuracy of the linear regression model for different water depth ranges is higher than that of the unzoned model, and the multi-band model has the highest inversion accuracy at 0 ~ 5 m in the zonal model. The inversion accuracy of the dual-band ratio model is the highest at 5 ~ 20 m, but the accuracy of the inversion depth at the shallowest point still needs to be improved. The variation trend of the bathymetric data extracted by this method is basically similar to that of the nautical chart, which can meet the requirements of marine scientific research for large-scale shallow water underwater topography detection.
【作者单位】： 上海海洋大学海洋科学学院;上海市海洋局河口海洋测绘工程技术研究中心;
【基金】：上海市科委基于国产高分辨率卫星的海洋测绘关键技术研究项目资助(14590502200)
【分类号】：P715.7
【相似文献】
相关期刊论文 前5条
1 张元奎;贺先明;高永福;;北黄海及渤海变性水团的初步分析[J];海洋湖沼通报;1983年02期
2 刘振;胡连波;贺明霞;;卫星高光谱数据反演南沙岛礁区海域浅海水深和光学参数[J];中国海洋大学学报(自然科学版);2014年05期
3 张安清;;浅海水声信道的脉冲噪声特性分析[J];声学技术;2007年05期
4 白晓慧;孙超;易锋;向龙凤;;低信噪比下的浅海水声稀疏信道估计[J];西北工业大学学报;2013年01期
5 邸凯昌,丁谦,陈薇,曹文玉;南沙群岛海域浅海水深提取及影像海图制作技术[J];国土资源遥感;1999年03期
，本文编号：2263841
本文链接：https://www.wllwen.com/kejilunwen/haiyang/2263841.html
