A global sensitivity analysis of soil parameters associated with backscattering using the advanced integral equation model
文献类型：期刊论文
| 作者 | Ma, Chunfeng1,2; Li, Xin1,3; Wang, Shuguo1,4 |
| 刊名 | Ieee transactions on geoscience and remote sensing
 |
| 出版日期 | 2015-10-01 |
| 卷号 | 53期号:10页码:5613-5623 |
| 关键词 | Active microwave remote sensing Extended fourier amplitude sensitivity test (efast) Sensitivity analysis (sa) Soil moisture inversion |
| ISSN号 | 0196-2892 |
| DOI | 10.1109/tgrs.2015.2426194 |
| 通讯作者 | Li, xin(lixin@lzb.ac.cn) |
| 英文摘要 | A profound and comprehensive understanding of the sensitivity of soil parameters related to backscattering coefficient is significant for the use of active microwave algorithms for soil moisture inversion. this paper presents a global sensitivity analysis (sa) based on the advanced integral equation model for soil moisture retrieval. the analysis involves diverse parameter ranges, sensor frequencies, incidence angles, surface correlation functions, and polarizations across various experiments. the primary objectives are to quantitatively and systematically evaluate the parameter sensitivities and their variations under various conditions, resulting in an improved understanding of microwave scattering and suggesting potential approaches to the improvement of soil moisture retrieval. the performance of this sa leads to the parameter sensitivities being quantified. sensitive and insensitive parameters are distinguished. the existence of the former informs the direction of model calibration, implying that these parameters can be inverted with high confidence. setting the latter as constants would be a step toward model simplification. various conditions are observed to influence the parameter sensitivities, suggesting that it is possible to perform soil moisture or roughness inversions under the most sensitive conditions for the parameters. finally, an sa of various combinations of dual-polarization, dual-frequency, and dual-incidence-angle backscatter is conducted. the results suggest that certain combinations enhance the sensitivities of certain parameters and allow for better estimation of their values. ultimately, the presented global sa highlights the quantitative and systematic evaluation of parameter sensitivities, particularly their interactions, leading to a more profound understanding of scattering and an improvement in soil moisture estimation. |
| WOS关键词 | BARE SOIL ; SURFACE-ROUGHNESS ; MOISTURE ESTIMATION ; RADAR-SCATTERING ; EMPIRICAL-MODEL ; MULTI-INCIDENCE ; INVERSION ; SAR ; BEHAVIOR ; IMAGERY |
| WOS研究方向 | Geochemistry & Geophysics ; Engineering ; Remote Sensing ; Imaging Science & Photographic Technology |
| WOS类目 | Geochemistry & Geophysics ; Engineering, Electrical & Electronic ; Remote Sensing ; Imaging Science & Photographic Technology |
| 语种 | 英语 |
| WOS记录号 | WOS:000356159900025 |
| 出版者 | IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376712 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Li, Xin |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Remote Sensing Gansu Prov, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China 4.Jiangsu Normal Univ, Xuzhou 221116, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Chunfeng,Li, Xin,Wang, Shuguo. A global sensitivity analysis of soil parameters associated with backscattering using the advanced integral equation model[J]. Ieee transactions on geoscience and remote sensing,2015,53(10):5613-5623. |
| APA | Ma, Chunfeng,Li, Xin,&Wang, Shuguo.(2015).A global sensitivity analysis of soil parameters associated with backscattering using the advanced integral equation model.Ieee transactions on geoscience and remote sensing,53(10),5613-5623. |
| MLA | Ma, Chunfeng,et al."A global sensitivity analysis of soil parameters associated with backscattering using the advanced integral equation model".Ieee transactions on geoscience and remote sensing 53.10(2015):5613-5623. |
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来源：中国科学院大学
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