Comment on 'Measurement of Ionospheric TEC in Spaceborne SAR Data'
| Autor: | Li Li, Michael Jehle, Yongsheng Zhang, Diannong Liang, Zhen Dong |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Synthetic aperture radar
Physics Autofocus total electron content (TEC) TEC Bandwidth (signal processing) 0211 other engineering and technologies 02 engineering and technology synthetic aperture radar (SAR) Geodesy law.invention Spaceborne radar Ionospheric total electron content law Chirp General Earth and Planetary Sciences Ionosphere Electrical and Electronic Engineering SAR processing 021101 geological & geomatics engineering Remote sensing |
| Zdroj: | IEEE Transactions on Geoscience and Remote Sensing. 54:1240-1242 |
| ISSN: | 1558-0644 0196-2892 |
| DOI: | 10.1109/tgrs.2015.2469787 |
| Popis: | Two novel approaches for measuring the ionospheric total electron content (TEC) from single-polarized spaceborne SAR data were proposed in the mentioned paper, i.e., the TEC autofocus method and the systematic alternate up/down pulse methodology. The up/down pulse methodology indicates that ionospheric TEC could be estimated using the difference between range-compressed phase distributions of the up and down chirps. However, it can be shown theoretically that the difference between the up and down chirps after compression is not expected. Thus, the estimation of TEC from alternating up versus down chirp combinations might not be feasible. |
| Databáze: | OpenAIRE |
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