中国区域SLR测站观测精度分析  

Observation accuracy analysis of SLR station in China

作　　者：李亚博 王小亚[1,2,3] LI Yabo;WANG Xiaoya(Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Key Laboratory of Space Navigation and Positioning Techniques,Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai 200030,China)

机构地区：[1]中国科学院上海天文台,上海200030 [2]中国科学院大学天文与空间科学学院,北京100049 [3]中国科学院上海天文台上海市空间导航与定位技术重点实验室,上海200030

出　　处：《测绘科学》2022年第10期59-65,共7页Science of Surveying and Mapping

基　　金：国家自然科学基金项目(11973073);国家重点研发计划项目(2016YFB0501405);中科院二代导航专项课题项目(ZFS19001D-ZTYJ04);上海市空间导航与定位技术重点实验室项目(06DZ22101)

摘　　要：针对中国区域卫星激光测距(SLR)观测站测距精度评估和稳定性问题,该文利用上海天文台SHORD-Ⅱ(ShangHai ORbit Determination-Ⅱ)软件对2010年1月—2021年6月lageos1/2卫星观测数据进行精密定轨,并分析了国内长春站、北京站、上海站和昆明站的距离偏差、时间偏差和测站残差。结果表明,国内测站有效观测数均达90%以上,观测精度较高,同时测站的长期系统偏差趋于稳定。对于lageos1卫星,各测站经过系统偏差修正后,长春站、北京站、上海站、昆明站残差平均值分别为4.14、4.70、2.01、3.90 mm;对于lageos2卫星,各测站经过系统偏差修正后,长春站、北京站、上海站、昆明站残差平均值分别为5.63、5.25、1.85、4.30 mm,残差平均值均优于1 cm,与国际激光测距服务(ILRS)国际测站观测精度相当。Aiming at the problem of ranging accuracy evaluation and stability of satellite laser ranging(SLR)observation stations in China,precise orbit determination had carried out based on lageos1/2 satellite observation data from January 2010 to June 2021 by using ShangHai ORbit Determination-Ⅱsoftware of Shanghai Astronomical Observatory,then the station distance deviation,time deviation and residual error Changchun station,Beijing station,Shanghai station and Kunming station were analyzed.The results showed that the effective observation number was more than 90%,which had higher observation precision,as well as the long-term systematic deviation of the stations tended to be stable.For lageos1 satellite,after the system deviation correction,the residual error mean of Changchun station,Beijing station,Shanghai station and Kunming station was 4.14、4.70、2.01、3.90 mm,respectively;For lageos2 satellite,the average residual errors of Changchun station,Beijing station,Shanghai station and Kunming station were 5.63,5.25,1.85 and 4.30 mm respectively.And the average residual error were all better than 1 cm,which was equivalent to that of International Laser Ranging Service(ILRS)international stations.

关 键 词：SLR精密定轨 距离偏差 时间偏差 测站观测质量 

分 类 号：P228[天文地球—大地测量学与测量工程]