| 基于二次曲面拟合的GBSAR大气扰动误差模型研究 |
| |
| 引用本文： | 汪学琴,岳建平,邱志伟,桑杰.基于二次曲面拟合的GBSAR大气扰动误差模型研究[J].长江科学院院报,2016,33(2):115-117. |
| |
| 作者姓名： | 汪学琴 岳建平 邱志伟 桑杰 |
| |
| 作者单位： | 1.水能资源利用关键技术湖南省重点实验室,长沙 410014; 2.河海大学 地球科学与工程学院,南京 210098;3.西藏自治区水利电力规划勘测设计研究院,拉萨 850000 |
| |
| 基金项目： | 国家自然科学基金项目(41174002)；水能资源利用关键技术湖南省重点实验室开放研究基金项目(PKLHD201311)；江苏省普通高校研究生科研创新计划项目(KYLX＿0498) |
| |
| 摘 要： | 大气扰动误差是地基合成孔径雷达(GBSAR)观测的主要误差之一,它与大气环境的变化密切相关,受大气扰动干挠影响随时间和空间的变化而发生改变。通过分析大气扰动误差在时间和空间上的变化特性,采用二次曲面函数建立大气扰动的分布模型,利用多个固定点解算模型参数,进而估算整个测区任意位置的大气扰动误差。试验结果表明,该方法有效改正了大气扰动误差,提高了GBSAR观测结果的精度。
|
| 关 键 词： | GBSAR 大气扰动 误差改正 分布模型 改正残差 |
| 收稿时间： | 2014-09-02 |
A Model for Error Distribution of Atmospheric Disturbance in Ground-based SAR on Account of Quadric Surface Fitting |
| |
| WANG Xueqin,YUE Jianpin,QIU Zhiwei,SANG Jie.A Model for Error Distribution of Atmospheric Disturbance in Ground-based SAR on Account of Quadric Surface Fitting[J].Journal of Yangtze River Scientific Research Institute,2016,33(2):115-117. |
| |
| Authors: | WANG Xueqin YUE Jianpin QIU Zhiwei SANG Jie |
| |
| Affiliation: | 1.Hunan Provincial Key Laboratory of Key Technology on Hydropower Development, Changsha 410014,China; 2.Earth Science and Engineering , Hohai University, Nanjing 210098, China; 3.Planning and Design Institute of Water Conservancy and Electric Power of Tibet Autonomous Region , Lasa 850000, China |
| |
| Abstract: | Atmospheric disturbance effect is one of the major factors which affect the measurement precision of system of ground-based synthetic aperture radar (GBSAR). It is closely relevant to the changes of atmospheric environment, and it varies with time and space. By analyzing spatial-temporal variation characteristics of error of atmospheric disturbance, we introduce function of quadric surface to establish a distribution model for atmospheric disturbance. Moreover,we use ground control points to obtain parameters of the model and to estimate the error at any position of overall testing area. Results suggest that the error of atmospheric disturbance is reduced and the accuracy of GBSAR measured data is improved by using this model. |
| |
| Keywords: | ground-based synthetic aperture radar ( GBSAR) atmospheric disturbance error correction distribu-tion model residual correction |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《长江科学院院报》浏览原始摘要信息 |
|
点击此处可从《长江科学院院报》下载全文 |
|
