| 无先验基准方法在SLR资料处理中的应用 |
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| 引用本文： | 冯初刚,张飞鹏,朱元兰.无先验基准方法在SLR资料处理中的应用[J].天文学报,2002,43(1):99-105. |
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| 作者姓名： | 冯初刚 张飞鹏 朱元兰 |
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| 作者单位： | 中国科学院天文地球动力学研究中心;中国科学院国家天文台,北京,100012;中国科学院上海天文台,上海,200030 |
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| 基金项目： | 地震科学工程中国地震运动观测网981602，国家攀登项目二级课题全国地震运动监测网，GPS测轨网研究970231003资助项 |
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| 摘 要： | SLR（satellite Laser Ranging)资料处理一般来说总是由各SLR测站构成的从标框架里进行。为了克服在SLR资料处理过程中对坐标框架的重复定义，利用全球1999年1月到12月的LAGEOS-1的SLR资料以无先验基准方法解算EOP（Earth Orientation Parameters）和所有SLR站的坐标的试验。在SLR资料处理中用无先验基准方法与GPS（Glaobal Positioning System)的不太一样，由于SLR的资料不能把SLR观测站连结成非常牢固的空间多面体（GPS的资料在每一瞬间可以拟测站联成一完整的空间多面体），因此需要加一些约束，以避免法方程出现秩亏。解得的测站从标用7参数转换到ITRF97坐标系，rms为1.3cm。EOP与IERS的eopc04序列相比，Xp、Yp、的rms分别为0.37mas、0.30mas，LOD（Length Of Day)的rmas为0.019ms。
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| 关 键 词： | 基准框架 无先验基准方法 SLR 卫星激光测距 资料处理 |
Application of No Fiducial Approach in SLR Data Processing |
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| FENG Chu-Gang,ZHANG Fei-Pengk ZHU Yuan-Lan.Application of No Fiducial Approach in SLR Data Processing[J].Acta Astronomica Sinica,2002,43(1):99-105. |
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| Authors: | FENG Chu-Gang ZHANG Fei-Pengk ZHU Yuan-Lan |
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| Abstract: | In analysis of SLR(Satellite Laser Ranging) data, a terrestrial reference frame is required. This is a test with no fiducial approach to obtain the estimates of polar motion and site coordinates based on SLR data from Jan. to Dec. of 1999. No fiducial approach in SLR is not same as in GPS(Global Positioning System). The some constraints is added to no fiducial approach of SLR in the test. The results are transformed into ITRF97 with the seven-parameter. The transformed coordinates are quite consistent with those of ITRF97 and the rms is 1.3cm. The polar motion is also consistent with that of the EOP(Earth Orientation Parameters) (IERS) and the rrns of xp, yp and LOD are 0.37 mas, 0.30 mas and 0.019 ms respectively. The test is successful. |
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| Keywords: | fiducial network no fiducial approach constraint |
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