顾及观测值精度的断层变形参数反演研究

从观测值奇异值、观测值分布及反演模型的先验信息3个方面入手，研究观测值对反演结果的影响。以观测点到微分断层的距离倒数为权，构建顾及观测值权值影响的反演模型。以位错理论为基础，结合遗传算法，对龙门山断裂带进行三维滑动速率反演研究。结果表明，经过奇异值剔除的数据应用于顾及观测值权值的反演模型，给定合理的“先验信息”，其结果比已知观测值直接参与反演模型更稳定、可靠。

Inversion of Fault Deformation Parameters Considering Observation Precision

The influence of observation precision to inversion results is studied from singular value, the distribution of data and a priori information of the inversion model. To take the reciprocal of the shortest distance between observation and the subdivision fault for weight, the model considering observation precision is established. On the basis of the dilocation model, the velocity of Longmenshan fault is calculated by GA. The results show that the data out of singular values, with the model considering observation precision, on the premise of reasonable a priori information, are stable and reliable.