海潮及大气荷载改正在连续运行基准站网（CORS）稳定性监测中的影响分析

北京市CORS网络是由多家单位共建、共享的GNSS综合应用服务系统,随着连续运行基准站系统应用领域的不断发展和在一些高精度监测领域的应用,其稳定性越发显得重要。本文简要介绍了基准站网稳定性监测流程,包括基线的精密解算、秩亏网平差、拟稳分析,并最终得到可靠的监测成果。文章重点讨论了海洋潮汐、大气荷载对区域GPS基线应用GAMIT软件精密解算的影响,并对基线数据和坐标结果进行了分析,对后续稳定性分析工作具有一定的指导作用。

Influence of Ocean Tide and Atmospheri Loading on CORS Stability Monitoring

Beijing CORS is an integrated application and service system established and shared by several departments,with CORS application fields of developing and applying in high precision monitoring fields,CORS stability is more and more important.This paper briefly introduces the CORS stability monitoring procedure,including GPS baseline’s high precision resolving,rank-deficient adjustment,quasi-stable analyzing,and geting reliable monitoring results.This paper emphatically discusses the influence of ocean tide and atmospheric loading on GPS baseline’s high precision resolving with GAMIT,and analyzes the baselines and coordinate data,which will be in favor of the subsequent stability analyzing.