Processing of ultra-high resolution spaceborne spotlight SAR data based on one-step motion compensation
| Autor: | Tianshun Xiang, Daiyin Zhu |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Synthetic aperture radar
Motion compensation Computer science 020208 electrical & electronic engineering Resolution (electron density) 0211 other engineering and technologies 02 engineering and technology Curvature Azimuth 0202 electrical engineering electronic engineering information engineering Orbit (dynamics) Range (statistics) Image resolution 021101 geological & geomatics engineering Remote sensing |
| Zdroj: | 2017 International Symposium on Antennas and Propagation (ISAP). |
| DOI: | 10.1109/isanp.2017.8228876 |
| Popis: | With the development of spaceborne synthetic aperture radar (SAR), the high resolution has become a hot topic again in recent years. However, the higher the resolution is, the worse the accuracy of the traditional hyperbolic range model (HRM) gets. In the case of ultra-high resolution spaceborne SAR, the curved orbit should be taken into account. To overcome this problem, we present a modified data-focusing scheme integrated with state-of-the-art airborne SAR motion compensation methods for spaceborne spotlight SAR. Firstly, one-step motion compensation is selected to correct the orbit curvature effectively, which has been applied in ultra-high resolution airborne SAR systems. Meanwhile, the two-step approach (TSA) is introduced to solve the azimuth spectral folding phenomenon. The simulation results validate the effectiveness of the scheme. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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