| GNSS连续站阶跃修复及其对数据处理的影响 |
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| 引用本文： | 冯胜涛,郑智江.GNSS连续站阶跃修复及其对数据处理的影响[J].全球定位系统,2013(5):53-55,82. |
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| 作者姓名： | 冯胜涛 郑智江 |
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| 作者单位： | 中国地震局第一监测中心,天津300180 |
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| 基金项目： | 地震行业专项（批准号：201308009）;一测中心预测室基金项目（批准号：201304001） |
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| 摘 要： | 近年来，由于仪器更换和强震影响，一些长期稳定的GNSS连续站出现了阶跃，严重地影响了参考框架的稳定性和解算精度，理论上这些测站不能再选为参考框架点。针对GNSS连续站阶跃修复及其对数据处理的影响进行了分析，结果表明：1）如果选用未修复阶跃的测站为框架点，将会扭曲解算结果；2）QOCA能够较为便捷地修复测站阶跃；3）修复测站阶跃能够保证参考框架点的稳定性，并能一定程度提高解算精度。
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| 关 键 词： | 阶跃 参考框架点 QOCA GNSS数据处理 |
Step Offset Recovery of GNSS Continuous Station and Its Effect on GNSS Data Processing |
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| FENG Shengtao,ZHENG Zhijiang.Step Offset Recovery of GNSS Continuous Station and Its Effect on GNSS Data Processing[J].Gnss World of China,2013(5):53-55,82. |
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| Authors: | FENG Shengtao ZHENG Zhijiang |
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| Institution: | (First Crust Monitoring and Application Center, CEA, Tianjin 300180, China) |
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| Abstract: | There are some to instrument replacement an can＇t be chosen as frame stati ence frame and calculation ace step offsets in the time series of GNSS continuous stations due d strong earthquake＇s effect in recent years. Those stations ons in theory and it seriously influenced the stability of refer- uracy. In this paper, step offset recovery of GNSS continuous station and its effect on GNSS data processing were analyzed and the results show that： 1） if the offset of stations were not recovered and were chosen as frame stations, the result would be distorted; 2） the offset can be recovered conveniently in QOCA; 3） step offset recovery of GNSS continuous station can maintain the stability of reference frame and improve the calcu- lation precision in some degree. |
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| Keywords: | Step offset frame station QOCA GNSS data processing |
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