划分重力区域异常与局部异常的变阶滑动趋势分析法

VARIABLE ORDER SLIDING TREND ANALYSIS METHOD USED IN THE DIVISION OF REGIONAL AND LOCAL GRAVITY ANOMALIES

本文在分析一般趋势分析缺陷的基础上，提出了变阶滑动趋势分析法，并用正交变换代替趋势分析中的解线性方程组，避免了线性方程组病态而造成的异常失真。最后用理论模型和实际资料处理结果说明了变阶滑动趋势分析的优点。

Based on analyzing the defect of ordinary trend analysis, a new method, variable order sliding trend analysis, is presented here. Instead of resolving linear equations in ordinary trend analysis, this method uses orthogonal transformation so that some distorted anomalies resulted from ill conditioned system of equations can be avoided. Finally, the advantage of this method is supported by the theoretical model calculation and field data processing results.