Geosynchronous SAR raw data simulator in presence of ionospheric scintillation using reverse backprojection
| Autor: | Yifei Ji, Lei Yu, Zaoyu Sun, Qilei Zhang, Zhen Dong, Yongsheng Zhang, Li Dexin |
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| Rok vydání: | 2020 |
| Předmět: |
Synthetic aperture radar
Scintillation Computer Science::Graphics Interplanetary scintillation Computer science 020208 electrical & electronic engineering 0202 electrical engineering electronic engineering information engineering Geosynchronous orbit 02 engineering and technology Electrical and Electronic Engineering Raw data Transfer function Remote sensing |
| Zdroj: | Electronics Letters. 56:512-514 |
| ISSN: | 1350-911X 0013-5194 |
| DOI: | 10.1049/el.2019.4151 |
| Popis: | The future L-band geosynchronous synthetic aperture radar (GEO SAR) system will be inevitably affected by ionospheric scintillation. Due to the lack of the real system, it is necessary to achieve the scintillation-affected GEO SAR raw data for the research of influential mechanism and correction strategies. A method for the generation of scintillation-affected GEO SAR raw data is proposed that utilises the reverse backprojection (ReBP) to efficiently and accurately modulate the scintillation transfer function on GEO SAR signals. A simulation experiment for a real SAR scene from one of the ALOS-PALSAR observation is operated in case of the current inclined L-band GEO SAR system configuration. The simulation takes less time by using the ReBP, compared with the existent method, and shows the speckle-like phase error similar to the injected scintillation phase error, which validates the nice efficiency and accuracy of the proposed methodology. |
| Databáze: | OpenAIRE |
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