The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008 
Fig. 11 .Irian Jay a, Indonesia - HS - HH/VV 
Map scales created through TerraSAR-X data exploitation can 
range from large area overviews (1:250.000) up to higher 
resolution maps (1:10.000) depending on the area and 
application. 
3.2 SAR Interferometry 
TerraSAR-X repeat pass interferometry can be applied in arid 
areas. The first results achieved by the German Aerospace 
Centre show that TerraSAR-X SpotLight modes allows the 
realisation of Digital Elevation Model with 5m horizontal and 
vertical accuracy (Adam, 2007). Moreover TerraSAR-X also 
allows urban ground motion with significantly higher resolution 
and shorter temporal baselines than current SAR satellites. 
Many studies are currently on-going and further results will be 
presented during the workshop. 
3.3 DinSAR and PS-InSAR 
Several applications regarding subsidence mapping on base of 
TerraSAR-X data are currently under evaluation. These 
comprise subsidence/uplift due to oil-/gas production and 
related stimulation activities as well as those related to the 
storage of gas in abandoned gas production sites. In addition, 
examples from construction activities (e.g. tunnelling/subway 
construction) are under investigation. 
First results using Differential Interferometry (DinSAR) are 
promising: Precise orbit information provided by using 
scientific orbits for TerraSAR-X data are reducing efforts for 
baseline estimation and potentially existing baseline error 
related residues in DinSAR results. Furthermore, the existence 
of an acquisition tube for TerraSAR-X leads to a majority of 
baselines below 300 m and thus a suitability of most of 
interferograms due to restricted loss of geometric decorrelation. 
• Burned area mapping 
3.4.1 Flooding Mapping 
Floods are among the most frequent types of natural disasters in 
Europe: More than one hundred major floods were recorded in 
the past decade alone, each causing severe social, ecological 
and economic damages. The overall objective of an effective 
flood risk management is to reduce the likelihood as well as the 
impact of floods. Thus, geo-information services and related 
Earth observation data are a fundamental source of information 
for all phases of risk management. They reliably support the 
responsible authorities and relief units in their decision-making. 
The following example (Fig 12) illustrates the assessment of a 
flood extent over the area of Trinidad, capital of Beni. The flood 
extent was realised by UNOSAT with a single polarisation 
TerraSAR-X images; RADARSAT-1 images from the 
08/02/2008 and 05/04/2001 were additionally used. 
For the application of persistent scatterer techniques, the 
acquisition of data stacks is currently ongoing for different areas ¡2. Flooding in the urban area of Trinidad, TerraSAR(SL) 
of interest with known surface displacements. Specific /Radars at radar images Source. TerraSAR-X; Radarsat, 1 m 
persistent scatterer analyses are foreseen as soon as suitable data SpotLight (X-Band) resolution.- @UNOSAT2008 
stacks are available. 
3.4.2 Oil Spills Monitoring 
3.4 Risk Management and Disaster assessment TerraSAR-X acquires oil slicks in the Black Sea - Nov 16 2007: 
The StripMap image acquired 5 days after an oil tanker broke 
TerraSAR-X high repeat cycle and resolution are important into two pieces shows massive oil slicks drifting on the surface, 
contributors for risk diagnostics, which are related to natural 
hazards. In the following subsection are proposed four examples 
of TerraSAR-X capability for disaster assessment and 
monitoring. 
• Flood extend mapping 
• Oil Spills 
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