雷达科学与技术2025，Vol.23Issue(5)：503-512,10.DOI:10.3969/j.issn.1672-2337.2025.05.004
基于星载分布式InSAR系统姿态分析的基线估计方法研究
Research on Baseline Estimation Method Based on Attitude Analysis of Space-borne Distributed InSAR System
田家奇 1梁维斌 2王亚芬 1柴会明 2林梓2
作者信息
- 1. 中国科学院空天信息创新研究院,北京 100094||中国科学院空间信息处理与应用系统技术重点实验室,北京 100190||中国科学院大学电子电气与通信工程学院,北京 100049
- 2. 中国科学院空天信息创新研究院,北京 100094||中国科学院空间信息处理与应用系统技术重点实验室,北京 100190
- 折叠
摘要
Abstract
Spaceborne distributed interferometic synthetic aperture radar(InSAR)system flying in formation winding,the relative attitude change of the two satellites leads to the dynamic change of baseline system error.The tradi-tional baseline estimation method of calculating the mean value of baseline calibration results for a single calibration site cannot be effectively applied to uncalibrated arcs.A baseline estimation method is proposed in this paper to solve this problem.The baseline system error and the system error of the two satellites are analyzed,and the baseline calibra-tion result is converted to the satellite system error.Then the baseline error of the uncalibrated arc is calculated by com-bining the orbit parameters and motion attitude of the satellite.The variations of the elevation difference,the relative atti-tude and the system error of the traditional baseline estimation method and the proposed baseline estimation method dur-ing the flight of the satellite are simulated,and the experimental results are verified by the measured data of the Chinese spaceborne distributed InSAR system.The experimental results show that the proposed baseline estimation method can improve the ground elevation measurement accuracy of the uncalibrated arc compared with the traditional baseline esti-mation method,and provide a new method for the application of baseline calibration results of spaceborne distributed InSAR system.关键词
星载分布式InSAR/基线估计方法/系统误差/基线定标Key words
spaceborne distributed InSAR/baseline estimation method/systematic error/baseline calibration分类
电子信息工程引用本文复制引用
田家奇,梁维斌,王亚芬,柴会明,林梓..基于星载分布式InSAR系统姿态分析的基线估计方法研究[J].雷达科学与技术,2025,23(5):503-512,10.
