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| 分布式InSAR基线转换及其误差分析 | |
| 引用本文： | 路瑞峰,高强,李科,陈筠力.分布式InSAR基线转换及其误差分析[J].上海航天,2012,29(2):7-12. |
| 作者姓名： | 路瑞峰 高强 李科 陈筠力 |
| 作者单位： | 1. 上海卫星工程研究所,上海,200240 2. 中国人民解放军海军驻上海航天技术研究院代表室,上海,201109 3. 上海交通大学电子信息与电气工程学院,上海,200240 |
| 摘 要： | 建立了分布式干涉合成孔径雷达（InSAR）卫星的基线模型,给出了部位修正、全球卫星定位系统（GPS）授时、插值和配准等主要误差源与基线误差的关系,在Matlab软件中仿真分析了各误差源对基线及测高精度的影响。结果表明：GPS测量误差对测高精度的影响严重;合成孔径雷达（SAR）及GPS天线相位中心相对安装点的误差对测高精度的影响较大;安装及热变形误差对测高精度的影响较小;姿态测量误差、配准误差,以及GPS授时误差对测高精度的影响可忽略。 |
| 关 键 词： | 干涉合成孔径雷达 基线 测高精度 误差分析 |
Baseline Transformation and Accuracy Analysis on Distributed InSAR System |
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| LU Rui-feng,GAO Qiang,LI Ke,CHEN Jun-li.Baseline Transformation and Accuracy Analysis on Distributed InSAR System[J].Aerospace Shanghai,2012,29(2):7-12. | |
| Authors: | LU Rui-feng GAO Qiang LI Ke CHEN Jun-li |
| Institution: | 1(1.Shanghai Institute of Satellite Enginerring,Shanghai 200240,China;2.The CPLA Represent Office in SAST,Shanghai 201109,China;3.School of Electronic,Information and Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China) |
| Abstract: | The mathematical model of the baseline for the distributed satellite interferometeric synthetic aperture radar(SAR) was established in this paper.The relationships among the baseline error and main error sources such as position modification,GPS time service,and interpolation and registration were given out.The influence of each error source on the baseline and height accuracy were analyzed using Matlab software.The results showed that the effect of the GPS measurement error on the elevation resolution was serious,the influence of the antenna phase center’s instability error of SAR and GPS on the elevation resolution was great,the effects of the installation error and thermo distortion were rather small,and the influences of attitude error,registration error and GPS time service error on the elevation resolution could be ignored. |
| Keywords: | Interferometric synthetic aperture radar Baseline Height accuracy Error analysis |
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