Towards the Retrieval of 2-D Vessel Velocities with Single-Platform Spaceborne SAR: Experimental results with the TerraSAR-X 2-looks TOPS Mode
| Autor: | Marc Rodriguez-Cassola, Maria J. Sanjuan-Ferrer, Steffen Wollstadt, Pau Prats-Iraola, Nestor Yague-Martinez |
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| Rok vydání: | 2018 |
| Předmět: |
Synthetic aperture radar
2-look TOPS 0211 other engineering and technologies Terrain 2-looks TOPS 02 engineering and technology TOPS law.invention InSAR symbols.namesake North-South deformation law Vessel tracking Radar 021101 geological & geomatics engineering Remote sensing Synthetic Aperture Radar (SAR) Ground truth Line-of-sight Azimuth symbols Doppler effect Geology SAR TerraSAR-X |
| Zdroj: | IGARSS |
| Popis: | In this contribution, we propose the use of 2-looks Synthetic Aperture Radar data to retrieve azimuth velocities of moving targets with a single platform. The established technique to retrieve velocities of moving targets is Along-track Inter-ferometry (ATI), which provides a measurement of the velocity in the radar line of sight direction by employing two or more phase centers separated in the along-track direction. The use of 2-looks data allows to observe targets at two different instants of time, with a Doppler separation, enabling the retrieval of the target velocity in the azimuth direction. We introduce the 2-looks Terrain Observation by Progressive Scans (TOPS) mode, presenting the performance that can be achieved with the TerraSAR-X system. Moreover, we present experimental results with real data acquired with TerraSAR-X over coastal areas to retrieve velocities of vessels. A validation of the results with Automatic Identification System (AIS) data (ground truth) provides accuracies below 1 m/s. |
| Databáze: | OpenAIRE |
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