权属发证过程中圆弧段面积变化问题研究

Study of Land Area Deviation During the Course of Land Area Identification

地块面积在转换前后经常出现面积偏差,经分析可知当前国内地块面积出现误差多由圆弧段的拟合造成,通过将圆弧段模型泰勒展开,经过反算,得到满足一定精度条件下拟合线段的数量,保证地块面积在转换前后达到一定精度需求。该方法原理简单,既保证了数据入库后面积满足精度需求,又不会增加数据的复杂程度。

There is always area deviation during the conversion of different data. It is the curve fitting that causes the deviation of land area nowadays. By analyzing the Taylor expansion of curve model,the number of poly-lines is calculated which satisfies the demands of the precision control during the land area identification. The new method is very simple,which not only ensures the land area＇s precision but also does not increase the complexity of the ownership conversion.