Ionospheric Sounding Based on Spaceborne PolSAR in P-Band
The signal of spaceborne low-frequency full-polarization synthetic aperture radar (full-pol SAR) contains abundant ionospheric information. Phased Array L-band Synthetic Aperture Radar (PALSAR) working in the L-band has been verified as an emerging ionospheric sounding technology. Aiming for a futur...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-03-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/13/4/524 |
| _version_ | 1797436962095759360 |
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| author | Wulong Guo Cheng Wang Haisheng Zhao Shaodong Zhang Le Cao Peng Xiao Lu Liu Liang Chen Yuanyuan Zhang |
| author_facet | Wulong Guo Cheng Wang Haisheng Zhao Shaodong Zhang Le Cao Peng Xiao Lu Liu Liang Chen Yuanyuan Zhang |
| author_sort | Wulong Guo |
| collection | DOAJ |
| description | The signal of spaceborne low-frequency full-polarization synthetic aperture radar (full-pol SAR) contains abundant ionospheric information. Phased Array L-band Synthetic Aperture Radar (PALSAR) working in the L-band has been verified as an emerging ionospheric sounding technology. Aiming for a future P-band SAR system, this paper investigates the ability of the P-band SAR system in ionospheric one-dimensional and two-dimensional detection. First, considering different systematic error levels, the total electron content (TEC) retrieval in L/P-band is studied by using three typical full-pol SAR data sets based on a circular polarization algorithm. Second, the TEC data retrieved by SAR are fused with the ionosonde, and the joint retrieval of ionospheric electron density is performed. Results show that the P-band TEC retrieval is approximately twice as accurate as the L-band retrieval under the same conditions, and possesses excellent robustness. In addition, the TEC obtained by L/P-band SAR can be used to correct the electron density of the topside on the ionosonde. Results also show that compared with the topside correction accuracy of L-band SAR, that of the P-band SAR is improved by more than 20%. SAR has natural high-resolution characteristics and the P-band signal contains more obvious ionospheric information than the L-band signal. Therefore, future spaceborne P-band SAR has many advantages in two-dimensional fine ionospheric observation and one-dimensional electron density retrieval. |
| first_indexed | 2024-03-09T11:11:08Z |
| format | Article |
| id | doaj.art-81952e2728104505a1b60a3d1395464b |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-09T11:11:08Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-81952e2728104505a1b60a3d1395464b2023-12-01T00:46:04ZengMDPI AGAtmosphere2073-44332022-03-0113452410.3390/atmos13040524Ionospheric Sounding Based on Spaceborne PolSAR in P-BandWulong Guo0Cheng Wang1Haisheng Zhao2Shaodong Zhang3Le Cao4Peng Xiao5Lu Liu6Liang Chen7Yuanyuan Zhang8Qian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaNational Key Laboratory of Electromagnetic Environment, China Research Institute of Radiowave Propagation, Qingdao 266107, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaSchool of Electric and Control Engineering, Xi’an University of Science and Technology, Xi’an 710054, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaQian Xuesen Laboratory of Space Technology, China Academy of Space Technology, Beijing 100094, ChinaSchool of Physics and Optoelectronic Engineering, Xidian University, Xi’an 710071, ChinaThe signal of spaceborne low-frequency full-polarization synthetic aperture radar (full-pol SAR) contains abundant ionospheric information. Phased Array L-band Synthetic Aperture Radar (PALSAR) working in the L-band has been verified as an emerging ionospheric sounding technology. Aiming for a future P-band SAR system, this paper investigates the ability of the P-band SAR system in ionospheric one-dimensional and two-dimensional detection. First, considering different systematic error levels, the total electron content (TEC) retrieval in L/P-band is studied by using three typical full-pol SAR data sets based on a circular polarization algorithm. Second, the TEC data retrieved by SAR are fused with the ionosonde, and the joint retrieval of ionospheric electron density is performed. Results show that the P-band TEC retrieval is approximately twice as accurate as the L-band retrieval under the same conditions, and possesses excellent robustness. In addition, the TEC obtained by L/P-band SAR can be used to correct the electron density of the topside on the ionosonde. Results also show that compared with the topside correction accuracy of L-band SAR, that of the P-band SAR is improved by more than 20%. SAR has natural high-resolution characteristics and the P-band signal contains more obvious ionospheric information than the L-band signal. Therefore, future spaceborne P-band SAR has many advantages in two-dimensional fine ionospheric observation and one-dimensional electron density retrieval.https://www.mdpi.com/2073-4433/13/4/524synthetic aperture radarionospheretotal electron contentionospheric electron density |
| spellingShingle | Wulong Guo Cheng Wang Haisheng Zhao Shaodong Zhang Le Cao Peng Xiao Lu Liu Liang Chen Yuanyuan Zhang Ionospheric Sounding Based on Spaceborne PolSAR in P-Band Atmosphere synthetic aperture radar ionosphere total electron content ionospheric electron density |
| title | Ionospheric Sounding Based on Spaceborne PolSAR in P-Band |
| title_full | Ionospheric Sounding Based on Spaceborne PolSAR in P-Band |
| title_fullStr | Ionospheric Sounding Based on Spaceborne PolSAR in P-Band |
| title_full_unstemmed | Ionospheric Sounding Based on Spaceborne PolSAR in P-Band |
| title_short | Ionospheric Sounding Based on Spaceborne PolSAR in P-Band |
| title_sort | ionospheric sounding based on spaceborne polsar in p band |
| topic | synthetic aperture radar ionosphere total electron content ionospheric electron density |
| url | https://www.mdpi.com/2073-4433/13/4/524 |
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