| IGDR数据用于高度计定标先期计算的可行性 |
| |
| 引用本文： | 管斌,孙中苗,刘晓刚,翟振和.IGDR数据用于高度计定标先期计算的可行性[J].海洋测绘,2018(1):10-13. |
| |
| 作者姓名： | 管斌 孙中苗 刘晓刚 翟振和 |
| |
| 作者单位： | 解放军信息工程大学地理空间信息学院;地理信息工程国家重点实验室;西安测绘研究所; |
| |
| 基金项目： | 国家自然科学基金(41174017,41374083,41674082,41304022) |
| |
| 摘 要： | 针对拟开展的Jason-3卫星高度计定标试验,分析了利用IGDR数据先期计算定标结果的可行性。介绍了基于GPS浮标的直接绝对定标方法,设计了IGDR数据用于定标计算的可行性评估方法,利用经过全球4大定标站海域的数据比较了IGDR、GDR数据计算定标结果的差异。结果表明:通过两种数据计算的定标结果之间没有明显的系统性偏差,其差异的不确定性约为1cm;相对于传统定标站GDR定标结果 3cm量级的标准差,该不确定性对于定标结果的一致性影响不大,在定标试验中可使用IGDR先期进行定标计算。
|
| 关 键 词： | 卫星测高 高度计定标 IGDR 定标试验 轨道高 |
Feasibility of Calibration Computing Using IGDR Preliminarily |
| |
| GUAN Bin,SUN Zhongmiao,LIU Xiaogang,ZHAI Zhenhe.Feasibility of Calibration Computing Using IGDR Preliminarily[J].Hydrographic Surveying and Charting,2018(1):10-13. |
| |
| Authors: | GUAN Bin SUN Zhongmiao LIU Xiaogang ZHAI Zhenhe |
| |
| Abstract: | Aiming at the planning calibration campaign of Jason-3 satellite altimeter,the feasibility of computing altimeter bias using IGDR (Interim Geophysical Data Record) preliminarily is analyzed.The direct absolute calibration method using GPS buoy is introduced,and the method of evaluating the above feasibility is designed.The difference between calibration results calculated by IGDR and GDR (Geophysical Data Record) is compared,utilizing the data passing through the 4 calibration sites around the world.The results show that two kinds of computed results have no obvious systematic bias,and the uncertainty of the difference is about 1cm.Comparing to the standard error at 3cm level calculated through GDR by traditional calibration sites,the influence of this uncertainty on the consistency of computed results is small,IGDR can be used to calculate the altimeter bias preliminarily during the campaign. |
| |
| Keywords: | |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《海洋测绘》浏览原始摘要信息 |
| 点击此处可从《海洋测绘》下载免费的PDF全文 |
|
