CAJ | 학술논문

2000国家大地坐标系(CGCS2000)不具备速度场信息,不能完整表述中国地心坐标参考框架的动态性和现势性,因此,有必要基于 CGCS2000建立中国大陆速度场模型.介绍了基于CGCS2000中国大陆速度场获取的方法；利用2000~2010年国家 GPS 连续运行站及国际 IGS 站的大量重复观测数据,获得了高精度GPS连续运行站点位成果及速度场成果,发现点位水平方向的精度优于±2 mm,垂直方向的精度优于±3 mm；速度场南北方向精度优于每年±1．6 mm,东西方向精度优于每年±1．8 mm；研究了11年来国家 GPS 连续运行站的变化趋势及变化量,获得了各个站点的运动趋势,并与中国地壳运动观测网络重合点进行分析比较,发现其差异较小,证明了计算结果的可靠性和可行性,说明CGCS2000为速度场模型的建立可提供高精度数据.
2000국가대지좌표계(CGCS2000)불구비속도장신식,불능완정표술중국지심좌표삼고광가적동태성화현세성,인차,유필요기우 CGCS2000건립중국대륙속도장모형.개소료기우CGCS2000중국대륙속도장획취적방법；이용2000~2010년국가 GPS 련속운행참급국제 IGS 참적대량중복관측수거,획득료고정도GPS련속운행참점위성과급속도장성과,발현점위수평방향적정도우우±2 mm,수직방향적정도우우±3 mm；속도장남북방향정도우우매년±1．6 mm,동서방향정도우우매년±1．8 mm；연구료11년래국가 GPS 련속운행참적변화추세급변화량,획득료각개참점적운동추세,병여중국지각운동관측망락중합점진행분석비교,발현기차이교소,증명료계산결과적가고성화가행성,설명CGCS2000위속도장모형적건립가제공고정도수거.
China Geodetic Coordinate System 2000 (CGCS2000)has no velocity,and can not show the dynamic and verisimilitude of China geocentric coordinate reference frame in whole. Therefore,it is necessary to build the velocity field model based on CGCS2000.The acquisition method of velocity field in China continent based on CGCS2000 was introduced;a large number of duplicate observed data at China GPS continuous operation stations in the international IGS stations from 2000 to 2010 were used to obtain the point results of high-precision GPS continuous operation stations and velocity field.It is found that the horizontal precision of point is better than ±2 mm,and the vertical precision of point are better than ±3 mm;the precision of velocity field in the north-south direction is better than ± 1??6 mm per year,and that in the east-west direction is better than ± 1??8 mm per year.The variation and trend of China GPS continuous operation stations in 1 1 years were studied,and the motion trend of each station was obtained. The coincident points from CGCS2000 and China Crustal Movement Observation Network were compared.The small difference proves that the calculating result is reliable and feasible,and CGCS2000 can provide high-precision data for building velocity field model.