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Options for continuous radar Earth observations

Science China(Information Sciences) 2017年第6期60卷 7-21页

作者： Andrea MONTI GUARNIERI fabio rocca Dipartimento di Elettronica Informazione e Bioingegneria-Politecnico di Milano

Near Real Time(minutes or hours) radar imaging of ground targets located anywhere on an hemisphere, with or without interferometric coherence with previous passes, can be obtained with different solutions that are considered here. Geosynchronous systems, from the one proposed in 1978 by Tomiyasu to telecom satellite compatible solutions, and Low, Medium or Geosynchronous Earth Orbit constellations are *** benefits, problems, and sizes are briefly summarized, and a comparative table is presented. If interferometric coherence is requested, continuous imaging is obtained only if a very wide geostationary aperture is progressively scanned, eventually using a MIMO(Multiple Input Multiple Output) combination of several slow librating small satellites. Instead, fast librating, strip mapping, large geosynchronous satellites do provide high resolution imaging, but interferometry(and thus coherent change detection) is achievable only after a minimum delay of 12 h, i.e., when the target comes in sight without need to squint the antenna. Hence, both complex and simple systems reach full resolution interferometric imaging and thus coherent change detection capability only after 12 h.

关键词： synthetic aperture radar continuous Earth observing system geosynchronous systems

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Three Gorges Dam stability monitoring with time-series InSAR image analysis

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Science China Earth Sciences 2011年第5期54卷 720-732页

作者： WANG Teng Daniele PERISSIN fabio rocca LIAO Ming-Sheng State Key Laboratory of Information Engineering in Surveying Mapping andRemote Sensing Wuhan University Wuhan 430079 China Dipartimento di Elettronica e lnformazione Politecnico di Milano Milan 20133 Italy Institute of Space and Earth Information Science Chinese University of Hong Kong Hong Kong China

In this paper,we carried out a combination of permanent scatterer and quasi permanent scatterer time-series InSAR image analyses to extract geometric information over the area of the Three Gorges *** the first time,we measured and analyzed the deformation of the Three Gorges Dam and its surrounding area using 40 SAR images acquired from 2003 to *** results indicate that the temporal deformation of the left part of the dam has ceased and that the deformation of the dam was influenced by the changing level of the Yangtze *** deformation due to varying temperature is also *** obtained results agree well with the published results of the Three Gorges Dam deformation obtained by employing conventional survey *** also found that there is an area of abnormal subsidence near Zigui *** paper demonstrates the potential of time-series InSAR image analysis in the monitoring of dam stability and measurement of subsidence.

关键词： Three Gorges Project deformation monitoring InSAR permanent scatterer analysis

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基于时间序列SAR影像分析方法的三峡大坝稳定性监测

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中国科学：地球科学 2011年第1期41卷 110-123页

作者：王腾 Daniele PERISSIN fabio rocca 廖明生武汉大学测绘遥感信息工程国家重点实验室武汉430079 Politecnico di Milano Dipartimento di Elettronica e InformazioneMilan 20133Italy 香港中文大学太空与地球信息科学研究所中国香港

本文提出了结合永久散射体和准永久散射体干涉测量技术的时间序列合成孔径雷达(SAR)影像几何信息提取方案,利用2003～2008年获取的40景SAR影像量测并分析了三峡大坝运行时的稳定性问题及其周边区域的形变规律.我们发现在数据获取期间,... 详细信息

本文提出了结合永久散射体和准永久散射体干涉测量技术的时间序列合成孔径雷达(SAR)影像几何信息提取方案,利用2003～2008年获取的40景SAR影像量测并分析了三峡大坝运行时的稳定性问题及其周边区域的形变规律.我们发现在数据获取期间,三峡大坝左段的时效沉降基本停止,大坝形变受水位的影响较大,季节性变化也有一定体现.该实验结果和已发表的该坝段形变监测结果十分吻合.在数据处理结果中我们还在大坝上游秭归县附近堤坝发现一处形变异常.研究结果表明了时间序列SAR影像信息提取技术在大坝稳定性监测及坝区形变参数获取中的应用潜力.

关键词：三峡工程形变监测合成孔径雷达干涉测量永久散射体技术

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Neuraxial anesthesia versus general anesthesia in patients undergoing three-dimensional laparoscopic radical prostatectomy:Preliminary results of a prospective comparative study

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Asian Journal of Urology 2023年第3期10卷 329-336页

作者： Stefano Alba Deborah Fimognari fabio Croceross Luigi Ascalone Carmine Pullano Fernando Chiaravalloti Francesco Chiaradia Umberto Carbonara Matteo Ferro Ottavio de Cobelli Vincenzo Pagliarulo Giuseppe Lucarelli Michele Battaglia Rocco Damiano Francesco Cantiello Department of Urology Romolo HospitalRocca di NetoKrItaly Department of Urology Magna Graecia University of CatanzaroCatanzaroItaly Department of Anesthesiology Villa PiaRomaItaly Department of Anesthesiology Romolo HospitalRocca di Neto KrItaly Universita degli Studi di Bari Aldo Moro Department of UrologyBariItaly Division of Urology European Institute of Oncology(IEO)IRCCSMilanItaly Department of Oncology and Hematology Oncology Faculty of Medicine and SurgeryUniversity of MilanMilanItaly Department of Urology Vito Fazzi HospitalLecceItaly Department of Emergency and Organ Transplantation-Urology Andrology and Kidney Transplantation UnitUniversity of BariBariItaly

Objective:Neuraxial anesthesia(NA)showed to reduce both morbidity and mortality in patients undergoing laparoscopic *** aimed to investigate the use of NA in patients undergoing transperitoneal three-dimensional laparoscopic radical prostatectomy(t-3DLRP)and compare the intraoperative and postoperative outcomes with a control group of patients undergoing t-3DLRP under general anesthesia(GA).Methods:A prospective,double-center,double-surgeon study cohort of 84 consecutive patients undergoing t-3DLRP between June 2019 and June 2021 was analyzed.A study group of 42 patients undergoing t-3DLRP under NA was compared with a control group of 42 patients undergoing t-3DLRP under ***:The two group were similar in all demographic,clinical,and pathological *** blood gas parameters were within physiologic limits in both *** relaxation was adequate for surgery during both NA and *** length of stay was 1 day shorter for NA group than GA group(5 days vs.6 days,p=0.05).t-3DLRP under NA had a statistically lower rate of minor complications(4.8%vs.19.0%,p=0.03)and less postoperative pain(median numeric rating scale 3 vs.4,p=0.01)compared to *** major complications were observed in both *** more patients were willing to undergo a similar intervention under NA than GA(p=0.04).Conclusion:t-3DLRP under NA is a feasible and safe procedure,with less postoperative pain and fewer minor complications than the same procedure under *** allows the maintenance of muscle relaxation and respiratory excursions without interfering with surgery.

关键词： Laparoscopy Prostate cancer Radical prostatectomy Postoperative complications Neuraxial anesthesia General anesthesia

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