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《Chinese Journal of Radio Science》 2004-04
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Synergy of optical and radar remote sensing in agricultural applications

QI Jia-guo 1,2 WANG Cui-zhen 2 Yoshio Inoue 3 ZHANG Ren-feng 4GAO Wei 5 CAO Guang-zhen 1(1. The Key Laboratory for Wave Scattering and Remote Sensing Information (Fudan University),Ministry of Education, Shangha 200433, China;2. Dept. of Geography and Center for Global Change and Earth Observations, Michigan State University, Michigan State, USA; 3. National Institute for Agro-Environmental Sciences, Tsukuba, Japan; 4. Dept. of Renewable Resources, University of Wyoming, Wyoming State, USA;5. Natural Resource Ecology Laboratory, Colorado State University, Colorado State, USA)  
Ability to estimate crop information from remotely sensed imagery is fundamental in precision agriculture. Traditional approach using optical remote sensing is restrictive by cloud-free quality imagery while microwave radar has not been fully explored to infering crop conditions. In this study, an optical/radar synergy is developed to examine its potential for extracting soil and plant information. The synergy employs a microwave scattering model developed by Karam et al. (1992) but modified due to 1) taking into account underneath soil backscattering properties and 2) using optical remote sensing as direct input variables to the model. The synergistic method is applied to two data sets from Maricopa Agricultural Center, Maricopa, Arizona, and the experimental fields of the National Institute for Agro-Environmental Sciences, Tsukuba, Japan. The data sets include the images from Landsat and ERS satellites as well as some ground based soil and plant measurements. The preliminary results indicate that radar imagery can be effectively integrated with optical imagery for extracting both soil and plant information. There exist potentials to apply such synergy for site-specific agricultural management practices.
【Fund】: 国家重点基础研究项目 (2 0 0 1CB30 94 0 1);; 国家自然科学基金资助项目 (6 0 1710 0 9)
【CateGory Index】: TP7
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【References】
Chinese Journal Full-text Database 1 Hits
1 WANG Hong-yuan1 WEI Song1 SUN Wen2(1.Dept. of Electronics and Information, Huazhong University of Science and Technology Wuhan Hubei 430074, China;2.Chengde Petroleum College, Chengde Hebei 067000, China);High resolution DBS imaging and moving target trajectory processing[J];Chinese Journal of Radio Science;2005-05
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