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研究了南沙群岛海域 Ｔ Ｍ 图像提取浅海水深的模型和方法以及影像海图制作技术。在传统的多波段线性回归模型的基础上，引入数据分组平均预处理、潮汐改正、分段线性回归和数据归一化等技术，使改进后的模型更加合理并具有较高的精度，从而适用于大的海域。在此基础上，提出了一整套遥感影像海图制作的技术和工艺流程。
The models and methods for extracting shallow water depth from T M images in the Nansha Islands and the techniques of making video nautical charts were studied. Based on the traditional multi-band linear regression model, the techniques of average pretreatment of data packet, tidal correction, piecewise linear regression and data normalization are introduced to make the improved model more reasonable and with higher precision In the big sea. On this basis, we put forward a set of technologies and process flow of a set of remote sensing image chart production.