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针对已有的遥感水深反演方法波段选取难,得不到较好的模型参数的问题,该文在国内外遥感水深反演研究的基础上,对经典的非线性模型进行研究,引入了逐步回归算法对模型进行了改进。以东岛为研究区,基于Worldview-2多光谱影像进行模型验证和精度评价。结果表明:应用改进后模型的反演水深精度大幅提高,水深范围不但适用在10m以浅的水区,在15~30m的区域精度也较高。由此可见改进的模型在保持原模型移植性较好的前提下,模型参数更易解算,反演精度较高,具有一定的适用性。
Aiming at the difficulty of selecting the band of remote sensing water depth by conventional methods, the problem of good model parameters can not be obtained. Based on the research of remote sensing water depth inversion at home and abroad, the classical nonlinear model is studied, The regression algorithm improves the model. Taking Dongdao as a research area, model validation and accuracy evaluation are based on Worldview-2 multi-spectral images. The results show that the accuracy of the retrieved water depth of the improved model is greatly improved. The water depth range is not only suitable for shallow water area of 10m, but also high in the area of 15 ~ 30m. It can be seen that the improved model can be more easily solved, the inversion accuracy is higher, and has certain applicability under the premise of better transplantability of the original model.