NASA湾流–III搭载UAVSAR雷达研究夏威夷火山 文章来源: 发布时间: 2012-01-12 NASA的湾流-III科研测绘飞机于1月7日返回夏威夷群岛,继续进行一项火山科研项目,帮助科学家更好的理解地球表面下发生的运动过程。装载在飞机吊舱里的是喷气推进实验室研制的无人飞行器合成孔径雷达UAVSAR。UAVSAR利用干涉技术从飞机传感器上向地面发射微波能量脉冲,检测地球上的微小形变。 图:NASA的湾流-III研究试验平台从爱德华兹空军基地跑道升空,机腹吊舱搭载无人机合成孔径雷达。 该雷达将从夏威夷大岛基拉韦厄火山上方41,000英尺高度收集数据。UAVSAR于2010年1月获取过这一区域的首批测量数据,在NASA的德莱顿飞行研究中心工程师设计的精密自动驾驶仪平台协助下,2011年5月再次对该火山区域进行航空测量。这两次观测成功的拍摄到了由于2011年3月基拉韦厄火山东裂隙带喷发造成的地表形变。 图:这些颜色增强图像拍摄于2010年1月和2011年5月,显示基拉韦厄火山区域距离山顶火山口六英里处的东部裂隙。从1983年起浆流一直流经东部裂隙,是基拉韦厄最活跃的的部分。 本月的航空测量将追踪前两年的相同路径,监测自2011年3月喷发以来产生的形变,并作为分析活动火山形变模式的前瞻性研究。 湾流–III于1月7日离开NASA帕姆代尔的德莱顿航空运营中心,按计划将于1月15日返回,在夏威夷期间将以柯纳国际机场作为地面基地。 如需获取更多资料, 请浏览: http://www.nasa.gov/topics/earth/features/kilauea_2012.html 资料提供:中国科学院对地观测与数字地球科学中心中国科学院成都文献情报中心 http://www.nasa.gov/topics/earth/features/kilauea_2012.html NASA G-III Carrying the UAVSAR Repeats Hawaiian Volcano Study 01.09.12 NASA's Gulfstream-III research testbed lifts off from the Edwards Air Force Base runway with the UAV synthetic aperture radar pod under its belly. (NASA / Tom Tschida) › View Larger Image › View Larger Image These color-enhanced interferogram images taken between January 2010 and May 2011 show the east rift zone of Kilauea volcano, about six miles from the summit caldera. Lave has been flowing from the east rift zone since 1983, and is the most active part of Kilauea. (JPL / UAVSAR image) › View Larger Iimage NASA’s G-III research aircraft returned to the Hawaii Islands Jan. 7 to continue a study of volcanoes intended to help scientists better understand processes occurring under Earth’s surface. Mounted in a pod under the aircraft is the Jet Propulsion Laboratory-developed Uninhabited Aerial Vehicle Synthetic Aperture Radar. UAVSAR uses a technique called interferometry that sends pulses of microwave energy from the sensor on the aircraft to the ground to detect and measure very subtle deformations in Earth’s surface. The radar will collect data over the Kilauea volcano on the Big Island of Hawaii from an altitude of about 41,000 feet. The UAVSAR’s first data acquisition over this region took place in January 2010. Assisted by a Platform Precision Autopilot designed by engineers at NASA’s Dryden Flight Research Center, flights over the volcano were repeated in May 2011. Those two sets of observations successfully imaged the surface deformation caused by the March 2011 fissure eruption in Kilauea’s east rift zone. Flights this month will trace the same path as the two previous years to measure deformation of the volcano since the March 2011 eruption and as part of future studies of the volcano’s changing deformation patterns due to volcanic activity. The aircraft departed NASA’s Dryden Aircraft Operations Facility in Palmdale, Calif., Jan. 7 and is scheduled to return Jan. 15. It will be based at Kona International Airport while in Hawaii. Beth Hagenauer NASA Dryden Public Affairs
“RAT(R a dar T ools)是一个 强大的、开源的用于合成孔径雷达数据处理的工具。鉴于ENVI或ERDAS等遥感图像处理软件中只包括一些基本的雷达数据处理功能,在PolSAR、 InSAR技术和PolInSAR方面的高级算法必须由专业人员处理,因此,我们决定开发RAT,RAT包含最新的SAR处理算法,特别是在数据处理和复 杂的SAR数据处理方面做了简化,极大的方便了普通用户的使用。” 附部分雷达处理软件链接 Free SAR software: ASF tools Converting and geocoding tools of the Alaska Satellite Facility BEST "Basic Envisat SAR Toolbox": The ESA collection of executable software tools that has been developed to facilitate the use of their SAR data. DORIS InSAR / DInSAR processor by the Delft Institute for Earth-oriented Space Research I.D.I.O.T. Easy-to-usesoftware for basic DInSAR processing, developed at the Berlin University of Technology. PolSarPro POLSARPRO is a freely distributed software for processing of polarimetric SAR data, developed at the University of Rennes with support by ESA. Radarworks toolbox Matlab toolbox mainly intended for polarimetric SAR data processing. RAT (Radar Tools) Open-source IDL application for various advanced SAR image processing tasks (SAR, PolSAR, PolInSAR InSAR), developed at the Berlin University of Technology. ROI_PAC "Repeat Orbit Interferometry Package" by Caltech/Jet Propulsion Laboratory , mainly for interferometric SAR processing. Commercial SAR software: DIAPASON "Differential Interferometric Automated Process Applied to Survey Of Nature", a general purpose DInSAR processor by CNES/Altamira Information EarthView Software for spaceborne SAR and InSAR processing and POLSAR data analysis by Vexcel / Microsoft Gamma Remote Sensing Complete software to support the entire processing of SAR data (SAR processing, InSAR, DInSAR, classification) InfoPACK Commercial high level library of routines for SAR image understanding, implementing specially developed algorithms optimised for SAR data. Photomod Radar Spaceborne SAR data processing SARscape Specialized ENVI extension for processing of SAR/InSAR data 附 SARsacpe主界面与简介链接 功能简介: http://www.esrichina-bj.cn/2010/1112/206.html
尼古拉.特斯拉被认为是世界上最伟大的发明家,他发明的交流供电系统,打败了发明大王爱迪生的直流供电系统。他被认为是无线电通信的第一发明人。此外,他对雷达、机器人、无线通讯提出了最先的设想。 他精通数国语言,过目不忘,被认为是科学狂人。因为他的思想是革命性的,远远超出了人们当时的想象。证据如下: T hough Tesla died in obscurity, his work earned him a place in history as Americas greatest electrical engineer. Computer science, theoretical physics, ballistics, nuclear physics, robotics and radar all benefited from his theories and experiments. Though his accomplishments were at times overshadowed by his eccentricities and carelessness with money, he earned for himself an important place in world scientific history. 特斯拉有一点不为当时和现在人们所理解的地方,就是他对数字3特别着迷。 他没有房产,只能住在旅馆里。但他对旅馆房间号有固执的要求, 就是房间号必须能够被3整除。 证据如下: Today, Tesla probably would have been diagnosed with obsessive compulsive disorder (OCD). In later life, the scientist was hamstrung by many of his obsessions, including a hatred of jewelry and round objects and a fixation on the number three. He never owned a house or an apartment, preferring to live in hotel rooms whose room numbers were divisible by three. 为什么世界上最伟大的天才发明家会要求房间号必须被3整除? 这一直是未解之谜。 参考文献: 【1】 http://www.magnet.fsu.edu/mediacenter/publications/flux/vol1issue1/documents/magnetmilestones.pdf