am? of 
1 with 
'Tence 
radar 
ctified 
of 10 
erage, 
it area 
ped in 
> and 
range 
'S, See 
cts for 
's and 
n with 
ation, 
ethod, 
ymatic 
image 
,, and 
more 
as the 
O use 
ult to 
ap for 
ymatic 
work, 
mage. 
visual 
ctified 
, The 
.-band 
height 
ilding 
'ights. 
Nuri Al-Nakib 
  
More informations on this technique is given in (Schmieder, 1997). For the projects in Indonesia, Brazil and Venezuela 
this correction technique was not applied due to the required accuracies and the lack of time. 
  
Figure 7: SAR ortho map, scale 1 : 50,000 Figure 8: Map for planning purposes, scale 1 : 50,000 
  
Figure 9: Topographic map, scale 1 : 50,000 
5. CONCLUSION 
The radar system AeS-1 has shown its suitability for mapping large areas in tropical countries based on three projects 
mentioned in this paper. The AeS-1 is able to collect data in remote and often cloud covered areas, while in each project 
specific purpose, project requirements and desired application are considered. 
For projects in future, two developments are important: On the one side, the AeS-1 system is continously technically 
developed: A third radar antenna is installed, which gives the possibility to use two baselines simultaneously (Wimmer 
et al., 2000). This helps to increase the accuracy of the data. Additonally installed frequency bands will increase the 
amount of extractable data. 
On the other side, new information extraction and application techniques are introduced and existing ones developed: 
For applications in future, it is planned to arrange the derivation of geoinformation data and the generation of high 
quality cartographic products increased automatically and database driven, in order to facilitate a faster production and a 
better integration of the data to cartographic and geographic information systems. 
REFERENCES 
Schmieder, A. (9/1997). Gewinnung von Hóhendaten aus InSAR-Daten durch automatische Klassifikation zur 
Gelündemodellbearbeitung. Diploma thesis, Munich, Germany, September 1997 
Schmieder, A., Huber, R. (2/2000). Automatic generation of contour lines for topographic maps by means of airborne 
high-resolution interferometric radar data. February 2000, to be published in the ASPRS conference proceedings, 22- 
26 may 2000, Washington, USA. 
Schwábisch, M., Moreira, J. (1999). The high resolution airborne interferometric SAR AeS-1. Fourth international 
airborne remote sensing conference and exhibition, Ottawa, Canada, 21-24 June 1999. 
Wimmer, Ch., Siegmund, R., Schwábisch, M., Moreira, J. (1/2000). Generation of high-precision DEM's of the 
Wadden Sea with airborne interferometric SAR. January 2000, to be published in IGARSS, september 2000 
  
International Archives of Photogrammetry and Remote Sensing. Vol. XXXIII, Part Bl. Amsterdam 2000. 23