关于海域面积精确计算的若干问题探讨

海域面积精确计算是实现海洋功能区划的基础和关键之一。本文通过对江苏省海洋功能区划工作中误差的分析 ,并针对其产生原因 ,在地图投影的选择和坐标的变换、扫描精度的控制、配准精度的控制、图象的数字化和图形编辑等方面 ,提出了相应的优化处理方法 ,提高了海域面积计算的精度 ,将其中误差控制在估计值范围内 ,从而在实际工作中有一定的应用价值。

Discussion of Some Problims about Accurate Calculation of Sea Area

Accurate calculation of sea area is one of the bases and keys to realize ocean functional division The errors that exist in the project of ocean functional division in Jiangsu province are analyzed Aiming at their causes, this paper presents corresponding superior methods in following aspects: selection of map projection, transformation of coordinates, control of scan accuracy and register accuracy, digitization of images, edit of figures, and so on Thus, the accuracy of sea area calculation can be improved, and the media errors can be controlled within esimation, and a certain aplication value can be achieved