Traffic Monitoring using SRTM Along-Track Interferometry
Breit, Helko and Eineder, Michael and Holzner, Jürgen and Runge, Hartmut and Bamler, Richard (2003) Traffic Monitoring using SRTM Along-Track Interferometry. In: Proceedings of IGARSS'03, CD-ROM. IGARSS'03, Toulouse.
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In February 2000, the Shuttle Radar Topography Mission SRTM was flown as the first single-pass SAR interferometer in space. The goal was to obtain a global digital elevation model. Therefore, a secondary receive-only antenna on the tip of a 60 m long deployable mast supplemented the primary transmit and receive antenna mounted in the shuttle cargo bay. Due to mechanical constraints, the interferometric baseline did not only consist of the terrain height sensitive across track component but also contained an along track component of 7 m. The resulting time lag between the data acquisitions by the two antennas causes phase differences, which are proportional to the line-ofsight velocity of moving targets. Since this system ability has been expected p rior t o the SRTM l aunch, a t raffic monitoring experiment has been carried out during the mission, which showed a surprisingly good agreement between the GPS velocity measurements on ground and the measurement from space. A strategy to exploit the along track interferometric (ATI) phase and the coherence together with the azimuth displacement of moving vehicles in focused SAR images has been developed and applied on sample test sides for traffic monitoring on highways.
|Document Type:||Conference or Workshop Item (Speech, Paper)|
|Title:||Traffic Monitoring using SRTM Along-Track Interferometry|
|Journal or Publication Title:||Proceedings of IGARSS'03|
|Keywords:||SRTM, along track interferometry, ATI, traffic monitoring, SAR, velocity measurement|
|Event Title:||IGARSS'03, Toulouse|
|HGF - Research field:||Aeronautics, Space and Transport|
|HGF - Program:||Space|
|HGF - Program Themes:||W EO - Erdbeobachtung|
|DLR - Research area:||Space|
|DLR - Program:||W EO - Erdbeobachtung|
|DLR - Research theme (Project):||UNSPECIFIED|
|Institutes and Institutions:||Remote Sensing Technology Institute|
|Deposited By:||Cornelia Roehl|
|Deposited On:||15 Jan 2009|
|Last Modified:||06 Jan 2010 22:19|
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