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Bonn, Germany (SPX) Aug 23, 2010 Erhard Diedrich, in charge of the building of the Inuvik satellite station, returned from Canada with his colleagues, a happy man. The inauguration on 10 August was not only moving, but also marked the end of a successful first checkout phase. Over 300 passes of data have been acquired since April this year, among them 60 from the TanDEM-X satellite. We acquired a first image over the Inuvik satellite station from TanDEM-X at the very beginning of the mission. During this acquisition, the 13-metre satellite dish followed the satellite flight path and therefore acted as a radar reflector. It appears on the radar image as a bright cross. The town of Inuvik is at the top left of the image; the airport is towards the lower right. The station in Inuvik is fully automated, from antenna control, through the complete reception chain, to the recording of the encrypted raw data onto tape. These tapes are then sent to DLR for processing. Monitoring of the station operations is performed at the Earth Observation Center in Oberpfaffenhofen, where all the data from the various TanDEM-X ground stations comes together and is assessed for completeness and quality. We now have 525 acquisitions from the TerraSAR-X satellite and 157 from TanDEM X in the archive, among them first joint acquisitions by both satellites, which can be used for the generation of elevation data sets. The first such image pair was acquired on 1 August over October Revolution Island in the Russian Arctic, which had already been the target of the very first 3D experiments. The TanDEM-X data received at the Inuvik satellite station were combined with those from the corresponding TerraSAR X scene and processed into elevation data using the operational TanDEM X processor. Further elevation data sets and explanations concerning the 3D representation will be given in an upcoming blog by my colleague, Thomas Fritz.
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Related Links TanDEM-X Earth Observation News - Suppiliers, Technology and Application
Google photographing French streets again, minus Wi-Fi scansParis (AFP) Aug 20, 2010 Google said Friday it had resumed photographing France with its Street View bikes and cars but without gathering fragments of personal data sent over unsecured Wi-Fi systems for which it is being probed. The French data protection agency CNIL said in June it was examining private data collected for Street View, including emails and possibly banking details, to decide if the firm should face ... read more |
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