精密轨道支持下的哨兵卫星TOPS模式干涉处理
发布时间：2018-08-15 14:16
【摘要】：哨兵卫星采用TOPS模式成像,为确保影像干涉相位偏差小于3°,方位向配准精确度需达到0.001个像素。本文论证了哨兵卫星精密轨道条件下进行几何配准即可达到较高的配准精度,满足增强谱分集进行方位向残余偏移量估计的前提条件,并基于DORIS软件实现哨兵卫星TOPS模式影像的几何配准和增强谱分集优化配准处理。地表方位向形变等信号可导致Burst干涉图之间发生相位跳变,并对增强谱分集估计几何配准残余偏移量时产生干扰,本文开展了相关的理论分析和数据处理试验,提出粗差探测方法消除相位跳变对增强谱分集配准的干扰。
[Abstract]:The Sentinel satellite is imaged in TOPS mode. In order to ensure the interference phase deviation is less than 3 掳, the azimuth registration accuracy needs to reach 0.001 pixels. In this paper, it is demonstrated that the geometric registration of Sentinel satellites under precise orbit conditions can achieve a higher registration accuracy, which meets the prerequisite of estimating the azimuth residual migration of enhanced spectral diversity. Based on DORIS software, geometric registration and enhanced spectral diversity optimization of Sentinel satellite TOPS pattern images are realized. Surface azimuth deformation and other signals can cause phase jump between Burst interferograms and interfere with the estimation of geometric registration residual offset by enhanced spectral diversity. The relevant theoretical analysis and data processing experiments have been carried out in this paper. A gross error detection method is proposed to eliminate the interference of phase jump on enhanced spectral diversity registration.
【作者单位】： 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室;武汉大学卫星导航定位技术研究中心;
【基金】：国家自然科学基金(41474014;41674032)~~
【分类号】：P237
，
本文编号：2184462
[Abstract]:The Sentinel satellite is imaged in TOPS mode. In order to ensure the interference phase deviation is less than 3 掳, the azimuth registration accuracy needs to reach 0.001 pixels. In this paper, it is demonstrated that the geometric registration of Sentinel satellites under precise orbit conditions can achieve a higher registration accuracy, which meets the prerequisite of estimating the azimuth residual migration of enhanced spectral diversity. Based on DORIS software, geometric registration and enhanced spectral diversity optimization of Sentinel satellite TOPS pattern images are realized. Surface azimuth deformation and other signals can cause phase jump between Burst interferograms and interfere with the estimation of geometric registration residual offset by enhanced spectral diversity. The relevant theoretical analysis and data processing experiments have been carried out in this paper. A gross error detection method is proposed to eliminate the interference of phase jump on enhanced spectral diversity registration.
【作者单位】： 湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室;武汉大学卫星导航定位技术研究中心;
【基金】：国家自然科学基金(41474014;41674032)~~
【分类号】：P237
，
本文编号：2184462
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