A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges
This article compares the performance of four different interferometric synthetic aperture radar (SAR) techniques for the estimation of rice crop height by means of bistatic TanDEM-X data. Methods based on the interferometric phase alone, on the coherence amplitude alone, on the complex coherence va...
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9502559/ |
| _version_ | 1818577212978233344 |
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| author | Noelia Romero-Puig Juan M. Lopez-Sanchez |
| author_facet | Noelia Romero-Puig Juan M. Lopez-Sanchez |
| author_sort | Noelia Romero-Puig |
| collection | DOAJ |
| description | This article compares the performance of four different interferometric synthetic aperture radar (SAR) techniques for the estimation of rice crop height by means of bistatic TanDEM-X data. Methods based on the interferometric phase alone, on the coherence amplitude alone, on the complex coherence value, and on polarimetric SAR interferometry (PolInSAR) are analyzed. Validation is conducted with reference data acquired over rice fields in Spain during the Science Phase of the TanDEM-X mission. Single- and dual-polarized data are exploited to also provide further insights into the polarization influence on these approaches. Vegetation height estimates from methodologies based on the interferometric phase show a general underestimation for the HH channel (with a bias that reaches around 25 cm in mid-July for some fields), whereas the VV channel is strongly influenced by noisy phases, especially at large incidences [root-mean-square error (RMSE) = 31 cm]. Results show that these approaches perform better at shallower incidences than the methodologies based on coherence amplitude and on PolInSAR, which obtain the most suitable results at steep incidences, with RMSE values of 17 and 23 cm. On the contrary, at shallower incidences, they are highly affected by very low input coherence levels. Hence, they tend to overestimate vegetation height. |
| first_indexed | 2024-12-16T06:26:20Z |
| format | Article |
| id | doaj.art-a38ce554ad814ae6b73ddf97b0df603f |
| institution | Directory Open Access Journal |
| issn | 2151-1535 |
| language | English |
| last_indexed | 2024-12-16T06:26:20Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing |
| spelling | doaj.art-a38ce554ad814ae6b73ddf97b0df603f2022-12-21T22:41:00ZengIEEEIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing2151-15352021-01-01147911793010.1109/JSTARS.2021.31008749502559A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and ChallengesNoelia Romero-Puig0https://orcid.org/0000-0002-7661-7563Juan M. Lopez-Sanchez1https://orcid.org/0000-0002-4216-5175Institute for Computer Research, University of Alicante, Alicante, SpainInstitute for Computer Research, University of Alicante, Alicante, SpainThis article compares the performance of four different interferometric synthetic aperture radar (SAR) techniques for the estimation of rice crop height by means of bistatic TanDEM-X data. Methods based on the interferometric phase alone, on the coherence amplitude alone, on the complex coherence value, and on polarimetric SAR interferometry (PolInSAR) are analyzed. Validation is conducted with reference data acquired over rice fields in Spain during the Science Phase of the TanDEM-X mission. Single- and dual-polarized data are exploited to also provide further insights into the polarization influence on these approaches. Vegetation height estimates from methodologies based on the interferometric phase show a general underestimation for the HH channel (with a bias that reaches around 25 cm in mid-July for some fields), whereas the VV channel is strongly influenced by noisy phases, especially at large incidences [root-mean-square error (RMSE) = 31 cm]. Results show that these approaches perform better at shallower incidences than the methodologies based on coherence amplitude and on PolInSAR, which obtain the most suitable results at steep incidences, with RMSE values of 17 and 23 cm. On the contrary, at shallower incidences, they are highly affected by very low input coherence levels. Hence, they tend to overestimate vegetation height.https://ieeexplore.ieee.org/document/9502559/Bistatic radarheightinterferometric SAR (InSAR)polarimetric SAR interferometry (PolInSAR)riceTanDEM-X |
| spellingShingle | Noelia Romero-Puig Juan M. Lopez-Sanchez A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing Bistatic radar height interferometric SAR (InSAR) polarimetric SAR interferometry (PolInSAR) rice TanDEM-X |
| title | A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges |
| title_full | A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges |
| title_fullStr | A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges |
| title_full_unstemmed | A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges |
| title_short | A Review of Crop Height Retrieval Using InSAR Strategies: Techniques and Challenges |
| title_sort | review of crop height retrieval using insar strategies techniques and challenges |
| topic | Bistatic radar height interferometric SAR (InSAR) polarimetric SAR interferometry (PolInSAR) rice TanDEM-X |
| url | https://ieeexplore.ieee.org/document/9502559/ |
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