A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR
Quadrature-polarimetric synthetic aperture radar (quad-pol SAR) has extensive applications, including climate zones classification, extraction of surface roughness, soil moisture mapping, moving target indication, and rice mapping. Hybrid quad-pol SAR ameliorates the range ambiguity performance of c...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-12-01
|
| Series: | Remote Sensing |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2072-4292/14/1/155 |
| _version_ | 1797497691106705408 |
|---|---|
| author | Yanyan Zhang Sheng Chang Robert Wang Peng Li Yongwei Zhang Yunkai Deng |
| author_facet | Yanyan Zhang Sheng Chang Robert Wang Peng Li Yongwei Zhang Yunkai Deng |
| author_sort | Yanyan Zhang |
| collection | DOAJ |
| description | Quadrature-polarimetric synthetic aperture radar (quad-pol SAR) has extensive applications, including climate zones classification, extraction of surface roughness, soil moisture mapping, moving target indication, and rice mapping. Hybrid quad-pol SAR ameliorates the range ambiguity performance of conventional quad-pol SAR. However, the azimuth ambiguity of its cross-polarized (cross-pol) echo signals is serious, limiting the swath width of SAR. Therefore, this paper proposes a spaceborne weighted amplitude modulation (WAM) full-polarimetric (full-pol) SAR system, and it can suppress the azimuth ambiguity of hybrid quad-pol SAR. The performance boost of the azimuth ambiguity by the two imaging modes of the proposed SAR system is detailed and evaluated with the L-band system parameters. Moreover, the chirp scaling algorithm (CSA) is adopted to execute scene simulations for the two imaging modes. The results indicate that the proposed SAR system can effectively suppress the azimuth ambiguity of hybrid quad-pol SAR and verify the theoretical analysis. |
| first_indexed | 2024-03-10T03:22:50Z |
| format | Article |
| id | doaj.art-2bd86cf620c94fe6aa3fa98a3714e820 |
| institution | Directory Open Access Journal |
| issn | 2072-4292 |
| language | English |
| last_indexed | 2024-03-10T03:22:50Z |
| publishDate | 2021-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Remote Sensing |
| spelling | doaj.art-2bd86cf620c94fe6aa3fa98a3714e8202023-11-23T12:13:58ZengMDPI AGRemote Sensing2072-42922021-12-0114115510.3390/rs14010155A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SARYanyan Zhang0Sheng Chang1Robert Wang2Peng Li3Yongwei Zhang4Yunkai Deng5Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaAerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100190, ChinaQuadrature-polarimetric synthetic aperture radar (quad-pol SAR) has extensive applications, including climate zones classification, extraction of surface roughness, soil moisture mapping, moving target indication, and rice mapping. Hybrid quad-pol SAR ameliorates the range ambiguity performance of conventional quad-pol SAR. However, the azimuth ambiguity of its cross-polarized (cross-pol) echo signals is serious, limiting the swath width of SAR. Therefore, this paper proposes a spaceborne weighted amplitude modulation (WAM) full-polarimetric (full-pol) SAR system, and it can suppress the azimuth ambiguity of hybrid quad-pol SAR. The performance boost of the azimuth ambiguity by the two imaging modes of the proposed SAR system is detailed and evaluated with the L-band system parameters. Moreover, the chirp scaling algorithm (CSA) is adopted to execute scene simulations for the two imaging modes. The results indicate that the proposed SAR system can effectively suppress the azimuth ambiguity of hybrid quad-pol SAR and verify the theoretical analysis.https://www.mdpi.com/2072-4292/14/1/155azimuth ambiguityweighted amplitude modulation (WAM)full-polarimetric (full-pol)synthetic aperture radar (SAR) |
| spellingShingle | Yanyan Zhang Sheng Chang Robert Wang Peng Li Yongwei Zhang Yunkai Deng A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR Remote Sensing azimuth ambiguity weighted amplitude modulation (WAM) full-polarimetric (full-pol) synthetic aperture radar (SAR) |
| title | A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR |
| title_full | A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR |
| title_fullStr | A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR |
| title_full_unstemmed | A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR |
| title_short | A Novel Weighted Amplitude Modulation (WAM) System for Ambiguity Suppression of Spaceborne Hybrid Quad-Pol SAR |
| title_sort | novel weighted amplitude modulation wam system for ambiguity suppression of spaceborne hybrid quad pol sar |
| topic | azimuth ambiguity weighted amplitude modulation (WAM) full-polarimetric (full-pol) synthetic aperture radar (SAR) |
| url | https://www.mdpi.com/2072-4292/14/1/155 |
| work_keys_str_mv | AT yanyanzhang anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT shengchang anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT robertwang anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT pengli anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT yongweizhang anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT yunkaideng anovelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT yanyanzhang novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT shengchang novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT robertwang novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT pengli novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT yongweizhang novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar AT yunkaideng novelweightedamplitudemodulationwamsystemforambiguitysuppressionofspacebornehybridquadpolsar |