Residual Phase errors and autofocusing in airborne SAR systems
| Autor: | Oleksandr O. Bezvesilniy, Ievgen M. Gorovyi, Dmytro M. Vavriv |
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| Rok vydání: | 2014 |
| Předmět: |
business.industry
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Phase (waves) Side looking airborne radar Function (mathematics) Residual law.invention Inverse synthetic aperture radar law Radar imaging Computer vision Artificial intelligence Radar business Representation (mathematics) |
| Zdroj: | 2014 IEEE Microwaves, Radar and Remote Sensing Symposium (MRRS). |
| Popis: | Presence of phase errors in radar data is a crucial problem for high-resolution SAR imaging. In the paper, a new idea for representation of an arbitrary phase error by its local approximations is proposed. Within such approach, a general analytical expression for the resolution degradation of multi-look SAR images is derived. The principle of local approximations is also used in a novel autofocusing approach that allows estimating and compensating of an arbitrary residual phase error function via measuring local quadratic phase errors. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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