Ap­pli­ca­tions and util­i­sa­tion

Oil slick
Oil slick
Image 1/3, Credit: DLR

Oil slick

On the 11 Novem­ber 2007, a storm broke the Rus­sian tanker Vol­go­neft-139 apart. This Ter­raSAR-X im­age shows the oil slick in the Kerch Strait be­tween the Ukraine and Rus­sia. The im­age cov­ers an area of ap­prox­i­mate­ly 30 by 100 kilo­me­tres in both po­lar­i­sa­tions (VV and HH).
Thwaite Glacier
Thwaite Glacier
Image 2/3, Credit: DLR.

Thwaite Glacier

View of the flow rate of the Thwaite Glacier in the Antarc­ti­ca, de­rived from radar in­ter­fer­om­e­try da­ta.
English Channel
En­glish Chan­nel
Image 3/3, Credit: DLR.

English Channel

Radar im­age of the En­glish Chan­nel, show­ing sea cur­rents, sur­face rough­ness and de­tec­tion of ships.

Applications

Due to its variety of operating modes, TerraSAR-X data can be used both for established applications of high-resolution data and also for large-scale monitoring tasks. The link list on the right of this page contains recent publications concerning the scientific exploitation and application of TerraSAR-X data.

Land use and regional/urban planning

So far, radar data have been effectively applied to forest monitoring, the investigation of the global carbon cycle and compliance verification for international climate conventions. The outstanding spatial resolution of the TerraSAR-X radar also allows the derivation of meaningful texture parameters. A significant improvement in land-use classification with respect to discrimination between crops and in mapping of humid areas and coastal zones can be expected. The evaluation of cross-polarised and polarimetric X-band SAR data will yield better insight for the disciplines of land-use analysis and environmental monitoring. Recently, advanced algorithms have been developed for the extraction of traffic infrastructure information and for traffic surveillance.

Disaster management

Disaster management comprises risk analysis, constant monitoring of threatened areas, the support of rescue teams and damage assessment. For these applications, the substantial advantage of radar sensors is their ability to operate in all weather conditions and the absence of daylight. Even on the global level, most regions of interest can be mapped by TerraSAR-X within 25 days of the event of interest. By means of repeat-pass interferometry, large-scale movements of and changes to the surface of the Earth can be detected and monitored with an accuracy of centimetres. These changes may be caused by earthquakes, volcanic activity, ground subsidence or landslides. TerraSAR-X data are essential for ‘DLR's Center for satellite based disaster monitoring’ (Zentrum für satellitengestützte Kriseninformation; ZKI).

Snow and glaciers

Apart from its relevance for the understanding of climate change impacts, up-to-date information on snow and ice coverage is important for agriculture, the prediction of flooding and the generation of hydroelectric power. In this domain, new insight is expected from the evaluation of cross-polarised and polarimetric data. These data will also build a solid base for the estimation of the melt-water equivalent and the mapping of ablation and accumulation zones on glaciers.

Sea and sea ice

A high image repetition rate is necessary for the monitoring of sea ice and icebergs. With its beam steering capability, TerraSAR-X is able to fulfil this requirement. In addition, the X-band is optimally suited to differentiating between various types of ice. Further improvements will be achieved through the extraction of textural parameters from high resolution TerraSAR-X data. VV-polarised X-band data allow the detection of oil on sea water because of the resulting reduction of surface roughness, which causes increased polarimetric anisotropy or decreased circular coherence of the backscattered signal.

Contact
  • Elke Heinemann
    Ger­man Aerospace Cen­ter (DLR)

    Com­mu­ni­ca­tions and Me­dia Re­la­tions
    Telephone: +49 2203 601-2867
    Linder Höhe
    51147 Cologne
    Contact
  • Dr.-Ing. Stefan Buckreuß
    Mis­sion Man­ag­er Ter­raSAR-X / Tan­DEM-X
    Ger­man Aerospace Cen­ter (DLR)
    Mi­crowaves and Radar In­sti­tute
    Telephone: +49 8153 28-2344
    Fax: +49 8153 28-1449
    Münchener Straße 20
    82234 Oberpfaffenhofen-Weßling
    Contact

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