中文摘要：

基于时序InSAR函数模型,分别建立了单主影像和多主影像时序InSAR误差模型,在理论上完善了时序InSAR数学模型。利用构建的随机误差模型,模拟试验研究了随机误差模型对时序InSAR待估参数精度的影响。结果表明,与等权模型相比较,加权模型（随机误差模型）估计的参数精度有一定提高;但由于加权条件下的参数估计模型复杂、计算效率低,目前利用等权方法进行时序InSAR的参数估计更简便易行。

英文摘要：

Based on the function model of TS-InSAR（time series interferometric synthetic aperture radar）technique,this paper establishes stochastic function models（weighted/equal-weight）for singlemaster and multi-master image TS-InSAR method respectively to enrich the mathematical model of TS-InSAR.A simulation test is used to estimate the precision of model parameters for our equalweighted function model（stochastic model）.Compared to the equal-weight model,the precision of deformation parameters shows little improvement over the weighted model.However,complications in the weighted model means that much disk-space is consumed with low computational efficiency.Most computers therefore cannot undertake TS-InSAR analysis tasks with reasonable hardware configuration.At present,the equal-weight model is feasible for TS-InSAR.