摘要
分析幅度稳定性、相位稳定性、时序相关性及振幅离差阈值等多种PS点提取方法的特点与缺陷,提出基于时序相关系数阈值与振幅离差阈值并集和交集的PS点识别策略,给出其相应模型,并实例验证了该方法的有效性与优越性。
The recognition and selection of high-coherence PS points is a premise that guarantees the high-precision of permanent scatterers. The characteristics and flaws of all kinds of selection methods, such as amplitude stability, phase stability, timing sequence correlation and amplitude dispersion index threshold were analyzed. The recognition strategy of PS points is brought forward based on the union and intersection of time sequence correlation coefficient threshold and amplitude dispersion index threshold. The basic principle of point target check method is expounded and the corresponding model is given, in addition, its effectiveness and superiority is verified.
出处
《大地测量与地球动力学》
CSCD
北大核心
2011年第4期144-148,共5页
Journal of Geodesy and Geodynamics
基金
国家自然科学基金(41004002)
中南大学博士后科学基金
关键词
永久散射体
识别提取
交集
并集
点目标检测
Permanent Scatterer （PS）
recognition and selection
intersection
union
point target check
