复测水准网动态平差与静态平差结果的比较  

COMPARISON BETWEEN DYNAMIC AND STATIC ADJUSTMENT RESULTS FOR REPEATED LEVELLING NETWORKS

作　　者：罗三明[1] 董运洪[1] 韩月萍[1] 袁油新[2] 李陶[2] 

机构地区：[1]中国地震局第一监测中心,天津300180 [2]武汉大学卫星导航定位技术研究中心,武汉430079

出　　处：《大地测量与地球动力学》2012年第1期97-100,122,共5页Journal of Geodesy and Geodynamics

基　　金：地震行业科研专项重大项目(200908029);国家自然科学基金(40604002;40874003);中国地震局第一监测中心青年基金(200901)

摘　　要：用动态平差与静态平差方法对复测水准网资料进行处理,获得两种方法下高程点的变化量及其速率,对高程点变化量及其速率的分析表明:动态平差可以获取任意时刻地壳运动的动态变化信息,其结果在描述地壳垂直运动特征及其过程时更为合理;而在静态平差结果中,待定点的变化量及其精度、速率值均会因固定点位置的不同而不同,其结果中出现了一个强制约束值,该结果淹没或者转移了观测值中可能包含的形变信息。因此认为,在进行地壳垂直运动分析时,宜采用动态平差计算结果。The observations of repeated levelling network with both dynamic and static adjustment method were processed, and the two kinds of variation and velocity of each elevation point were obtained. The results show that the dynamic method is more reasonable than static one for describing characteristics and course of crustal vertical motion because the former is independent of reference mark, and takes the time factor acquired data into account. The results from static adjustment, however, the variation, accuracy and velocity of unknown marks will vary with the location of reference mark, and a constraint numerical value will occur in results. This submerges or transfers the possible deformation information contained in raw data. It is suitable to make use of dynamic result for analyzing crustal vertical motion.

关 键 词：复测水准网 动态平差 静态平差 形变信息 高程速率 

分 类 号：P207[天文地球—测绘科学与技术]