统一全球地壳垂直运动参考基准的方法研究  

A Method of Unifying the Global Crustal Vertical Motion Reference Datum

作　　者：董文亮 孙付平[1] 朱新慧[1] 刘帅[1] 

机构地区：[1]信息工程大学导航与空天目标工程学院,河南郑州450001

出　　处：《武汉大学学报（信息科学版）》2014年第3期358-361,共4页Geomatics and Information Science of Wuhan University

基　　金：国家自然科学基金资助项目(41374027;40674011);地理信息工程国家重点实验室开放研究基金资助项目(SKLGIE2013-M-1-4)~~

摘　　要：提出一种以SLR作为统一全球地壳垂直运动参考基准的方法。利用SLR、GNSS和VLBI国际分析中心提交给ITRF2008和ITRF2005的坐标速度场数据,选出精度较高的并置站,并经坐标转换计算出各自站心坐标系下的垂向速度场。基于系统差模型解算出SLR与GNSS、VLBI的垂向速度场之间的系统差,并利用此系统差将GNSS、VLBI的垂向速度场改正到以SLR为垂直运动参考基准上来。经一致性检验发现,改正后相关系数和斜率都趋近于1,这表明以SLR作为统一地壳垂直运动参考基准是可行的。One method for taking SLR as the global crustal vertical motion reference datum is proposed after considering SLR ranging characteristics. The data for coordinates and velocity fields that SLR, GNSS and VLBI analysis centers submitted to the ITRF2008 and ITRF2005 was used to select high precision co-location sites and calculate their vertical velocity field in the local coordinate system using coordinate conversion. Systematic errors between SLR and GNSS or VLBI vertical velocity field were calculated based on a deduced mathematical model. With the calculated systematic errors, the vertical velocity fields of GNSS and VLBI were corrected to the SLR vertical motion reference datum. Taking SLR as the global crustal vertical motion reference datum was proven to be feasible as the correlation coefficient as the slope tends to be 1 after consistency inspection.

关 键 词：地壳垂直运动参考基准 SLR 垂向速度场 系统差 并置站 

分 类 号：P227[天文地球—大地测量学与测量工程]