长江南通河段卫星遥感水深探测试验

Experiment of water depth surveying in the Nantong section of the Yangtze River

在水深遥感机理分析的基础上 ,应用多光谱遥感技术 ,开展长江南通河段水深遥感探测试验 ,建立该河段水深遥感模型 ,对河床水下地形进行反演。试验表明 ,应用陆地卫星TM数据对含沙量较高的长江河口段浅部水深进行探测有一定的效果 。

An experimental work on water depth surveying in the Nantong section of the Yangtze River was carried out by using satellite remote sensing multi-spectral technique. On the basis of the analysis on the mechanism of remote sensing in water depth surveying, a digital model of the water depth surveying in the riverbed of the section was set up by calculating quasi-synchronous remote sensing spectral data and channel sounding data, and inverted the water depth maps from landsat TM data in 1984, 1994 and 1998. The result inverted shows that the landsat TM data have some efficiencies in measuring shallow water depth in such a high sediment discharge riverbed.