Abstract
Abstract. Normally, in order to provide high resolution 3 Dimension (3D) geospatial data, large scale topographical mapping needs input from conventional airborne campaigns which are in Indonesia bureaucratically complicated especially during legal administration procedures i.e. security clearance from military/defense ministry. This often causes additional time delays besides technical constraints such as weather and limited aircraft availability for airborne campaigns. Of course the geospatial data quality is an important issue for many applications. The increasing demand of geospatial data nowadays consequently requires high resolution datasets as well as a sufficient level of accuracy. Therefore an integration of different technologies is required in many cases to gain the expected result especially in the context of disaster preparedness and emergency response. Another important issue in this context is the fast delivery of relevant data which is expressed by the term “Rapid Mapping”. In this paper we present first results of an on-going research to integrate different data sources like space borne radar and optical platforms. Initially the orthorectification of Very High Resolution Satellite (VHRS) imagery i.e. SPOT-6 has been done as a continuous process to the DEM generation using TerraSAR-X/TanDEM-X data. The role of Ground Control Points (GCPs) from GNSS surveys is mandatory in order to fulfil geometrical accuracy. In addition, this research aims on providing suitable processing algorithm of space borne data for large scale topographical mapping as described in section 3.2. Recently, radar space borne data has been used for the medium scale topographical mapping e.g. for 1:50.000 map scale in Indonesian territories. The goal of this on-going research is to increase the accuracy of remote sensing data by different activities, e.g. the integration of different data sources (optical and radar) or the usage of the GCPs in both, the optical and the radar satellite data processing. Finally this results will be used in the future as a reference for further geospatial data acquisitions to support topographical mapping in even larger scales up to the 1:10.000 map scale.
Highlights
Since 2000, the International Charter on Space and Major Disaster has established an agreement by coordinating the involved agencies all around the globe to initialize an effective system collaboration of space data acquisition for providing remote sensing data within affected regions during disaster situations
The high resolution imageries were freely given to the public through authorized users immediately
This paper describes remote sensing data processing by getting an advantage of Ground Control Points (GCPs) from Global Navigation Satellite System (GNSS) measurements and stereo optical compilation
Summary
Since 2000, the International Charter on Space and Major Disaster has established an agreement by coordinating the involved agencies all around the globe to initialize an effective system collaboration of space data acquisition for providing remote sensing data within affected regions during disaster situations. Initiated by the French Space Agency (CNES) and the European Space Agency (ESA), the members of that charter are 23 institutions either from private or governmental sector providing widely used space borne remote sensing data for disaster preparedness and emergency response. Under this charter, the provided space borne imagery data shall be distributed by the participating agencies on a voluntary basis without any direct funding and payment during the period of natural or man-made disasters in any part of the globe. The high resolution imageries were freely given to the public through authorized users immediately
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