摘要
针对甚长基线干涉测量技术以其极高的测角精度和稳定性在解算地球定向参数和维持地球参考框架方面发挥着不可替代的作用,但是由于其设备庞大昂贵,因此测站较少且观测不连续的问题,该文首先利用VieVS软件解算了2012—2016年的甚长基线干涉测量数据,获得地球定向参数。提出了采用极坐标插值法对极移参数进行插值,以获取连续的极移参数解。对插值后的极移时间序列进行频谱分析,得到较为明显的周年、半周年等周期项,验证了本文采用插值方法的可行性和可靠性。
The very long baseline interferometry(VLBI)plays a key role in earth orientation parameters(EOP)solutions and earth reference frame maintaining based on the high precision and stability of observations.However,in consideration of the massive and expensive of the hardware,the observation data is insufficient and discontinuous from the sparse stations.In this study,to solve problem mentioned above,2012-2016 years VLBI observations are processed by the VieVS to figure out the corresponding EOP parameters.Then,the polar-format interpolation on EOP is conducted,which could obtain the more continuous EOP than original data.Finally,the periodic terms of the interpolation EOP are extracted with the spectrum analyzing Experimental results show the annual and semi-annual periods are existed,which verifies the feasibility and reliability of the interpolation.
作者
张军杰
王潜心
吴飞
王志文
陈雄川
ZHANG Junjie;WANG Qianxin;WU Fei;WANG Zhiwen;CHEN Xiongchuan(School of Environment Science and Spatial Informatics,China University of Mining and Technology,Xuzhou,Jiangsu221116,China)
出处
《测绘科学》
CSCD
北大核心
2019年第1期139-143,共5页
Science of Surveying and Mapping
