The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part Bl. Beijing 2008 
information and other ancillary information. Depending on the 
Value Added Product type, different auxiliary raster products are 
available. 
Geocoded Incidence Angle Mask (GIM): The GIM contains 
information on the local incidence angle and on the location of 
radar shadowing and layover. This mask has the same coding 
and file structure as the GIM available for the EEC products [1]. 
The mask can be used for further processing, e.g. radiometric 
calibration using the incidence angle information. The GIM is 
available for ORI sar , RAN sar , and all other VA products 
derived from these products or EEC. 
Incidence Angle Mask (IAM): The IAM is an alternative 
representation of the local incidence angle information. The 
values are not coded, thus the mask can be directly used for 
further processing such as radiometric calibration using the 
incidence angle information. The IAM is available for ORI sar , 
RAN sar , and all other VA products derived from them. 
Layover and Shadow Mask (LSM): The LSM is the second 
part of the alternative representation of the GIM. It contains 
information on radar shadow and layover regions in the image. 
Like the IAM it can directly be combined with the image data. 
The LSM is available for ORI sar , RAN sar , and all other VA 
products derived from them. 
Local Resolution Mask (RES): The RES identifies the actual 
ground resolution of the SAR system for each pixel resulting 
from the local topography and incidence angle. The RES is 
available for the ORI sar and products derived from it. 
Source mask (SOU): The source mask gives a numeric value 
that allows the identification of the source input image for each 
output pixel. The Source Mask is optionally available for the 
MC SAR , ADM sar and the OI SAR . 
Enumeration files: Enumeration files consists of the Along 
Track Enumeration file (ALT) and Across Track Enumeration 
file (ACT). Both files provide the original location in SAR 
(range-azimuth) geometry for each output pixel. These files are 
useful for conversions from slant range to geocoded geometries 
(and vice-versa), e.g. for geocoding additional products co 
registered with the input image. The enumeration files are only 
available for ORI sar if it is produced with a DEM provided by 
the customer. 
The following table gives an overview on the availability of 
Auxiliary Raster Products for TS-X Value Added Products. 
Auxiliary files 
Product 
GIM 
IAM 
LSM 
SOU 
RES 
ALT 
ACT 
ORI sar 
y* 
y * 
RAN sar 
V 
V 
MC SAR 
y * 
y* 
y * 
y* 
OI SAR 
y* 
y * 
y* 
y* 
y* 
ADM sar 
y * 
y* 
y * 
S 
y * 
* optional, depending on input products type (see description) 
3. TERRASAR-X APPLICATIONS 
3.1 Mapping activities 
3.1.1 Land Use/Land Cover Mapping 
TerraSAR-X high geometric and radiometric resolution, high 
repeat cycle and polarisation availability can support, in 
combination with ancillary data, the generation of update land 
use/land cover information map. Land use or land cover 
mapping products are needed by many authorities on rather 
different spatial levels and with different thematic contents 
(land use mapping, transport agency, environmental entities ...) 
for the use in GIS systems. 
»•«j »msoMUffflioiWom infoiarra 
Fig. 10: Demonstration using LMCS / sub-set of CORINE Land 
Cover dass types - Belzig, Brandenburg (Germany) 
Fig. 10 shows the land cover classification according to the 
CORINE nomenclature of the test site of Belzig in Germany. 
The following image (Fig 11) shows a high resolution 
SpotLight data over the coastal zone of Irian Jaya, Indonesia. It 
can be easily seen on the TerraS AR-X image that different types 
of vegetation cover the considered area. The coast line is in fact 
covered of mangrove, whereas palm oil plantation is dominated 
on the drier land. Studies are currently on-going in order to 
determine how much TerraS AR-X can support forestry 
activities. 
Our preliminary studies thus showed that the very high 
resolution, the multi-polarization and multi-incidence angle 
capability of TerraS AR-X open very interesting perspectives for 
the mapping and monitoring of urban areas. 
3.1.2 Topographic Mapping 
Topographic base maps contain surface forms, surface features 
(vegetation cover, man-made surfaces and buildings, traffic 
lines, water lines and bodies etc). They are essential instruments 
for any planning activity (e.g. strategic, spatial, agricultural, 
forestrial, and environmental) and are a prerequisite for the 
retrieval of further value added geo-information products. 
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