地震精密水准网平差的一种高效算法研究

A Fast Adjustment Algorithm of Earthquake Precise Leveling Network

传统的地震水准网平差计算方法因需要进行大量的"零乘积"运算而致使运算效率低下,不适用于数据量较大的地震水准网计算工作。针对地震水准网平差计算过程中法方程系数具有对称正定的特性,利用变量循环重新编号法进一步提升运算效率。利用新算法进行数据平差计算,对比验证结果表明,与传统算法相比,地震精密水准网型越复杂,新算法节省的时间越多。

Generally,there are many calculations of about zero in the traditional adjustment algorithm,which is useless and decreases the calculation efficiency,especially when the data quantity is very large.The new adjustment algorithm avoids the problem above effectively,and the new algorithm is further improved using a variable-loop-and-renumber-method.Finally,the new adjustment algorithm is used to adjust the precise leveling data in Tianjin,and the results show that new algorithm is more effective.