首页> 外文期刊>IEEE Transactions on Geoscience and Remote Sensing >Robust Detection of Single and Double Persistent Scatterers in Urban Built Environments
【24h】

Robust Detection of Single and Double Persistent Scatterers in Urban Built Environments

机译:在城市建筑环境中对单个和两个持久性散射体的鲁棒检测

获取原文
获取原文并翻译 | 示例
           

摘要

In this paper, we develop a synthetic aperture radar (SAR) tomography-based persistent scatterer interferometry (Tomo-PSInSAR) method to detect single and double persistent scatterers (PSs) in urban built environments. By constructing a two-tier network, we can jointly detect single and double PSs with no need for preliminary removal of the atmospheric phase screen (APS) in the whole area. This technique is more applicable in high-rise built environments (e.g., Hong Kong) with cloudy and rainy weather, where there is much uncertainty when removing the APS. In the first-tier network, we aim to detect the most reliable single PSs (SPSs) by constructing a Delaunay triangulation network. To improve the robustness of estimation, we combine beamforming with an M-estimator for parameter estimation at the arcs and introduce a ridge estimator for network adjustment. In the second-tier network, we detect the remaining SPSs and all of the double PSs (DPSs) by constructing local star networks that use the SPSs detected in the first-tier network as reference points. To simplify the detection of DPSs, we employ a local maximum ratio method for extracting overlaid DPSs. Finally, 56 Hong Kong TerraSAR-X images are used to validate the Tomo-PSInSAR method.
机译:在本文中,我们开发了一种基于合成孔径雷达(SAR)层析成像的持久性散射体干涉测量(Tomo-PSInSAR)方法,用于检测城市建筑环境中的单个和双重持久性散射体(PSs)。通过构建一个两层网络,我们可以联合检测单个和两个PS,而无需在整个区域中预先拆除大气相筛(APS)。此技术更适用于多云和阴雨天气的高层建筑环境(例如,香港),在拆除APS时存在很多不确定性。在第一层网络中,我们旨在通过构建Delaunay三角测量网络来检测最可靠的单个PS(SPS)。为了提高估计的鲁棒性,我们将波束成形与M估计器结合起来以进行弧处的参数估计,并引入了一个岭估计器来进行网络调整。在第二层网络中,我们通过构建使用第一层网络中检测到的SPS作为参考点的本地星形网络来检测剩余的SPS和所有双PS(DPS)。为了简化DPS的检测,我们采用局部最大比率法提取重叠DPS。最后,使用56张香港TerraSAR-X图像验证了Tomo-PSInSAR方法。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号