Terrasar x tsx has led to a new era for synthetic aperture radar sar imaging, offering highresolution 1m data that was not previously available from space. All these products support mapping and monitoring as well as applyingsar interferometry insar to observe and measure ground mov ements. Demonstration of terrasarx scansar persistent scatterer. Subsidence detection by terrasar x interferometry on a network of natural persistent scatterers and artificial corner reflectors. Pdf the terrasarx project is a public,private partnership between astrium gmbh. Region of movement x satellite associated with the terrasar x data.
Terrasar x applications guide list of abbreviations. Sar interferometry with terrasarx esa earth online. An example is terrasar x, which is a german earthobservation satellite. Pdf first topsar interferometry results with terrasarx. Terrasarx ground segment experimental product description. The successful launch of terrasar x took place on june 15, 2007 from the russian cosmodrome, baikonur, kazakhstan, on a russianukrainian dnepr1 launch vehicle with a 1.
Aiming to solve these problems, a blind estimation method for azimuth. A comparison of terrasarx, radarsat2 and alospalsar. An advantage of satellite sar systems with electronic beam steering is the absence of platform stability problems during. Terrasarx1 data, infoterra the sarscape interferometry module allows you to process interferometric sar 2pass interferometry, insar, and differential interferometric sar npass interferometry, dinsar data. First topsar image and interferometry results with terrasar x adriano meta, pau prats, ulrich steinbrecher, josef mittermayer and rolf scheiber. First topsar image and interferometry results with terrasarx. Blind azimuth phase elimination for terrasar x scansar interferometry zhe hu, linlin ge and xiaojing li geodesy and earth observing systems group geos. The project is supported by bmbf german ministry of education and science and managed by dlr german aerospace center. Zhoualos palsar scansar interferometry and its application in wenchuan earthquake. For each order future acquisition order or catalogue order the customer can specify. Tsx terrasarx eoportal directory satellite missions. Terrasar x tsx is supposed to be a revolution for synthetic aperture radar sar imaging because it offers the highest resolution spatial data and is suitable for interferometry. Automated sea ice classification on dual polarimetric.
Apart from a complex product, scansar interferometry requires that both images have a common doppler spectrum, i. Tandem x terrasar x addon for digital elevation measurements is a second, very similar spacecraft launched successfully on 21 june 2010 from baikonur cosmodrome in kazakhstan. Terrasarx basic products copernicus space component data. Xband intersatellite link for phase referencing between both radars resp. First topsar interferometry results with terrasarx. Thanks to different polarimetric combinations and processing levels the delivered imagery can be tailored specifically to meet the requirements of the application. First topsar interferometry results with terrasarx core. However, it can observe on both sides of its trajectory.
The terrasar x mission 2nd stgipy sar coordination meeting ob f ff h f s t 30 2008oberpfaffenhofen, sept 30, 2008. Terrasar x is an operational, advanced sarsatellite system for scientific and commercial applications. Element and total antenna pattern for a steering angle of 0. Terrasarx instrument operations rooted in the system. Since october 2010, terrasar x and tandem x fly in a close formation at distances of only a few hundred metres and record data synchronously. Blind azimuth phase elimination for terrasar x scansar interferometry abstract. In the scansar imaging modes, electronic antenna elevation steering is. Region of movement scansar interferometric processing using existing standard insar software for measuring large scale land deformation. A satellite formation for highresolution sar interferometry gerhard krieger, member, ieee, alberto moreira, fellow, ieee, hauke fiedler, irena hajnsek, member, ieee, marian werner, marwan younis, member, ieee, and manfred zink abstracttandem x terrasar x addon for digital elevation measurements is an innovative spaceborne. The tsx x band sensor can be operated in three interferometrically compatible imaging modes. The terrasar x mission is a public private partnership ppp between the german aerospace centre dlr and europes leading space company, eads astrium gmbh. First topsar image and interferometry results with terrasar x.
Apart from a complex product, scansar interferometry requires that both images have a. Terrasar x1 also referred to as tsx or tsx1 is a german sar satellite mission for scientific and commercial applications national project. Terrasar xtandemx image products can be acquired in 6 image modes with flexible resolutions from 0. Terrasarxtandemx wide scansar latest eo data products. In order to overcome the limitations posed by conventional systems, surveillance with satellite sar is being. Blind azimuth phase elimination for terrasarx scansar. Radarsat2 and palsar one year interferograms are useful for permafrost monitoring. Pau prats, luca marotti, steffen wollstadt, rolf scheiber microwaves and radar institute, german aerospace center, germany abstract this paper presents results on sar interferometry with the socalled tops mode.
Simplifying the terrasarx scansar interferometry by making it stripmaplike precise enough to remove the nonlinear azimuth phases providing a solution for terrasarx scansar interferometry starts from slc data can also be applied to other advanced sar system with nonlinear azimuth phases, such as spotlight. It is the continuation of the scientifically and technologically successful radar missions x sar 1994 and srtm 2000 and will bring the national technology developments desa and topas into operational use. Terrasarx tops, scansar and widescansar interferometric. Sbas small baseline subset interferometry sc scansar imaging mode, 4beam scansar. Terrasar x applications guide furthermore, terrasar x provides excellent radiometric stability over time, which results in. Science coordinators for terrasarx and tandemx german. Terrasar x tandem x image products can be acquired in 6 image modes with flexible resolutions from 0. The maximum azimuth steering angle of terrasar x allows the implementation of topsar with the same coverage and resolution as the nominal terrasar x scansar. Terrasar x offers the new wide scansar mode with a large coverage up to 270 x 200 km2 and a spatial resolution of 40 m.
Terrasar x persistent scatterers in the hong kong harbor. More sophisticated propulsion system of tandemx allows for constellation control. Automated sea ice classification on dualpolarimetric terrasar x data. Terrasar x ground segment experimental product description public 3. The exclusive commercial exploitation rights are held by the geoinformation service provider astrium. Simplifying the terrasar x scansar interferometry by making it stripmaplike precise enough to remove the nonlinear azimuth phases providing a solution for terrasar x scansar interferometry starts from slc data can also be applied to other advanced sar system with nonlinear azimuth phases, such as spotlight. You can also use the shift key to draw a zoom area.
Acquisition of geo ground control point information is quickly available due to its independence on weather conditions and illumination everywhere on earth. Recognition of objects airplanes, hangars, vessels, terrasarx new mode 20. Terrasarx applications guide benefits of using terrasarx geo gcp location information is provided well below one meter unmatched by any other spaceborne solution. Post tandem x monostatic commissioning version for start of terrasar x mission data provision by both satellites. Sar interferometry in scansar mode has also been used in other satellites, such as envisat 15,16, alos 17, alos2 18, and terrasar x 19. Terrasar x terrasar x is an active matrix, x band synthetic aperture radar sar, capable of acquiring data with a resolution of 1 metre, and in all weather conditions, both during the daytime and at night. Scansar interferometry of the gaofen3 satellite with. Terrasar x terrasar x is germanys first national remote sensing mission being. For comparison, a terrasar x scansar data take has been acquired over the same area and with the same geometric configuration on september 2nd. Interferometry package is a set of minimum 5 standard scenes to be ordered within 6 months with an. Optionally, click hide all scenes to simplify navigation on the world map.
Access to terrasarx for scientific purposes terrasarx mission goals. Highlights terrasarx, radarsat2 and palsar all maintain good coherence through summer months. The process chain includes all steps listed in doris manual 21. Terrasar x repeatpass images acquired in scansar and tops mode have been processed using the operational integrated tandem x processor itp 8. The sar raw data are processed by the terrasar x multi mode sar processor tmsp. Terrasar x was launched on 15 june 2007 and has been in operational service since january 2008. A comparison of terrasar x, radarsat2 and alospalsar interferometry for monitoring permafrost environments, case study from herschel island, canada. Sar modes, namely, stripmap, scansar, and spotlight, as.
Demonstration of repeat pass interferometry, along track interferometry, persistent scatterer evaluation, topsar, total zero. Details on the interferometric processing results obtained. Thanks to different polarimetric combinations and processing levels the delivered imagery can be tailored specifically to meet the. Terrasar xtandemx wide scansar basic products and maritime pack. Scansar mode, the focused burst is much larger than the raw data burst, requiring special care when performing the azimuth focusing. Terrasar x applications guide terrasar image product basic image product. Terrasarxs stripmap and scansar mode parameters modified from 23. This technique, known as radar interferometry, especially when combined with terrasar x s high geometric resolution of about one metre, opens up a range of new applications. Terrasarx1 also referred to as tsx or tsx1 is a german sar satellite mission for scientific and commercial applications national project.
Spacecraft launch mission status sensor complement secondary payloads ground segment references. Since terrasar x only has one antenna, two passages in slightly different orbits are required in order to obtain a perspective view of the earth. Scansar data areavailable as detected as well as complex images. Scansar data are available as detected as well as complex images. Pdf ship surveillance with terrasarx scansar jordi. Stripmap sm, highresolution spotlight hs and scansar. Band of movement of 2030 cmyear detected along the northeast coast. This results in a commercially unique ratio between. Terrasar x is a 1 meter resolution class radar satellite, which delivers earth observation data for scientific, institutional and commercial users terrasar x is the first satellite implemented in a publicprivate partnership in germany, as eads astrium gmbh and the german aerospace centre dlr share the costs for construction and implementation of the satellite. We address the processing of interferometric terrasarx and tandemx spotlight data. Citeseerx document details isaac councill, lee giles, pradeep teregowda. Wide area psi demonstration with terrasar x scansar mode terrafirma esa project. Demonstration of terrasar x scansar persistent scatterer interferometry f. The ideal procedure for an interferometric acquisition is that of the tandem x satellite associated with the terrasar x data.
Demonstration of repeat pass interferometry, along track interferometry, persistent scatterer evaluation, topsar, total zero doppler steering demonstration of quadpol mode the use of terrasar x data was demonstrated for geoscientific applications, oceanography and disaster monitoring during commissioning phase. Pdf the terrasar x project is a public,private partnership between astrium gmbh and,the german aerospace center dlr. Using opensource components to process interferometric. The terrasar x mission and system design article pdf available in ieee transactions on geoscience and remote sensing 482. Although the terrasar x scansar system is able to provide slc data with both large coverage and high resolution, it is a huge challenge to utilise them for interferometry due to the impacts of nonlinear azimuth phases and insufficient parameters. Pdf sar interferometry with terrasarx researchgate. Glrt detection of moving targets via multibaseline alongtrack interferometric sar systems. Terrasar x applications guide benefits of using terrasar x geo gcp location information is provided well below one meter unmatched by any other spaceborne solution. Even if the mission goal is not primarily sar interferometry, terrasar x offers a number of new perspectives to sar interferometry when compared to ers and also envisat. Highlights terrasar x, radarsat2 and palsar all maintain good coherence through summer months. During the last years, the demand for vessel surveillance has increased both for fisheries control and for maritime security and safety. Ten years of experience with scientific terrasarx data. Benefits of using terrasar x the main benefit of terrasar x for generating digital elevation models is that necessary.
Chapter 2 describes the objectives of the announcement of opportunity related to the utilization of experimental terrasar x data and terrasar x like processed data acquired by the tandem x mission. The terrasar x is a german national sar satellite system for scientific and commercial applications. Palsar two and three year interferograms can also form good displacement products. Recommended image specification for image analysis. Terrasar x is a commercial german synthetic aperture radar sar earth observation satellite which was launched in june 2007. The tandem x satellite is designed for a nominal lifetime of 5 years and has a nominal overlap with terrasar x tsx1 of 3 years. Terrasar x, an imaging radar earth observation satellite, is a joint venture being carried out under a publicprivatepartnership between the german aerospace center dlr and eads astrium. Terrasarx mission 2004 werninghaus publications spie. It is a huge challenge to utilise them for interferometry due to the impacts of nonlinear azimuth phases and insufficient parameters, although the terrasar x scansar system is able to provide slc data with both large coverage and high resolution. Terrasar x image product guide basic and enhanced radar satellite imagery page 4 of 24 issue 2. A terrasar x addon satellite for singlepass sar interferometry alberto moreira, gerhard krieger, irena hajnsek, david hounam and marian werner german aerospace center dlr microwaves and radar institute hr. An advantage of satellite sar systems with electronic beam.
Terrasarxtandemx wide scansar content earth online. The maximum azimuth steering angle of terrasar x allows the implementation of topsar with the same coverage and resolution as the nominal terrasar x scansar mode, four range subswaths with 16 m. The operational imaging modes stripmap, spotlight and scansar are. Terrasar x image product guide basic and enhanced radar satellite imagery page 8 of 24 issue 2.
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