Rice Biomass Estimation Using Radar Backscattering Data at S-band
文献类型：期刊论文
| 作者 | Jia, Mingquan1; Tong, Ling1; Zhang, Yuanzhi2 ; Chen, Yan1
|
| 刊名 | IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 7期号:2页码:469-479 |
| 关键词 | Backscattering coefficients growth model ground-based radar scatterometer neural network rice biomass scatter model |
| 英文摘要 | This paper presents an inversion method based on neural networks (NN) to estimate rice biomass in a paddy rice field with fully polarimetric (HH, HV, VH, VV) measurements at S-band. The backscattering coefficients are measured by a ground-based scatterometer system during the rice growth period from May to September 2010. The rice growth parameters including biomass, leaf-area index (LAI) and canopy structure are collected by random sampling at the same time. Data analyses show that the multi-temporal backscattering coefficients are very sensitive to the changes of biomass, LAI, canopy height and stem density. We also find that multi-temporal observations are suitable for paddy detection in the early growth period, and co-polarimetric observations perform well for monitoring rice status in the late growth period. According to the field measurements, a rice growth model was established as the function of rice age. The model made the parameters more representative and universal than limited random measurements over a given rice field. The scatter model of rice fields was simulated based on Monte Carlo simulations. The input parameters in the scatter model were generated by the rice growth model. The simulation results of the scatter model were composed as the NN training dataset, which was used for training and accessing the NN inversion algorithm. Two NN models, a simple training model (STM) and a related training model (RTM), were applied to estimate rice biomass. The obtained results show that the root mean square error (RMSE = 0.816 Kg/m(2)) of the RTM is better than that of the STM (RMSE = 1.226 kg/m(2)). The results suggest that the inversion model is able to estimate rice biomass with radar backscattering coefficients at S-band. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000331457400009 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6495]  |
| 专题 | 国家天文台_月球与深空探测研究部 |
| 作者单位 | 1.Univ Elect Sci & Technol China, Sch Automat, Chengdu 611731, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Mingquan,Tong, Ling,Zhang, Yuanzhi,et al. Rice Biomass Estimation Using Radar Backscattering Data at S-band[J]. IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,2014,7(2):469-479. |
| APA | Jia, Mingquan,Tong, Ling,Zhang, Yuanzhi,&Chen, Yan.(2014).Rice Biomass Estimation Using Radar Backscattering Data at S-band.IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING,7(2),469-479. |
| MLA | Jia, Mingquan,et al."Rice Biomass Estimation Using Radar Backscattering Data at S-band".IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING 7.2(2014):469-479. |
入库方式： OAI收割
来源：国家天文台
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