摘要
本文讨论了水平形变网在参考椭球面上的平差问题,以邢台地震区的水平形变网为例,说明在参考椭球面上作高精度水平形变网平差是可行的。这种平差的关键是作高精度大地主题反算,这不难用数值积分方法在微机上实现。本文采用了一种更适合于形变测量特点的在参考椭球面上平差的误差方程式。在参考椭球面上作水平形变网平差不仅可以解决大规模水平形变网的平差计算问题,而且其计算结果利于同空间大地形变测量平差结果作直接比较。此外,参考椭球面上水平位移解的一个优点是没有子午线收敛角的影响。
In this paper,the adjustment of horiz ontal deformation network on the ellipsoid is discussed, with an example of the adjustment of deformation network in the region of the Xingtai earthquake (1966). It shows that such adjustment is feasible.The key problem is to get the precise inverse solution of geodesic,which can he easily realized on microcomputer through numerical integration.New forms of observation equation are given for deformation analysis.The adjustment method can he used for large scale horizontal deformation network and for comparison of adjustment results of conventional Z-D network with those of 3-D network of space teehnology,and the adjustment results are free of meridan convergence in Gaussian projection.
出处
《地壳形变与地震》
CSCD
1990年第3期90-95,共6页
Crustal Deformation and Earthquake
