引用本文:张强, 李莲芳, 杨世琦, 范莉, 何泽能.GNSS-R陆面遥感为重要补充的土壤水分监测体系设计[J].西南大学学报(自然科学版),2019,41(3):114~119
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GNSS-R陆面遥感为重要补充的土壤水分监测体系设计
张强, 李莲芳, 杨世琦, 范莉, 何泽能1,2,3
1. 重庆市气象局, 重庆 401147;2. 重庆市勘测院, 重庆 401147;3. 重庆市气象科学研究所, 重庆 401147
摘要:
介绍了GNSS-R陆面遥感的原理和发展现状,在重庆市土壤水分监测现状分析基础上,设计了一种面向用户需求的土壤水分综合监测体系.在方案设计中,对人工测墒、地面气象站、自动土壤水分监测、卫星遥感干旱监测、GNSS-R陆面遥感等5种监测手段进行了时间分辨率、空间分辨率、观测代表性的对比分析,说明将GNSS-R陆面遥感作为重要补充进行综合土壤水分监测体系设计是可行的、有益的.研究表明,GNSS-R路面遥感的应用可进一步提高重庆市土壤水分监测体系时空分辨率,填补自动土壤水分观测和卫星遥感在时间分辨率、空间分辨率之间的衔接空白,拓展GNSS连续跟踪站网新应用.与雷达估测降水、卫星重力、陆面资料同化结合,可为长江上游水资源动态监测提供支撑.
关键词:  重庆  GNSS-R  土壤水分  陆面遥感  卫星测高
DOI:10.13718/j.cnki.xdzk.2019.03.016
分类号:P237;S152.7
基金项目:重庆市社会民生科技创新专项项目(cstc2017shmsA120007).
The Design of a Soil Moisture Observation System with GNSS-R Land Remote Sensing as a Major Supplement
ZHANG Qiang, LI Lian-fang, YANG Shi-qi, FAN Li, HE Ze-neng1,2,3
1. Chongqing Meteorological Bureau, Chongqing 401147, China;2. Chongqing Survey Institute, Chongqing 401147, China;3. Chongqing Institute of Meteorological Sciences, Chongqing 401147, China
Abstract:
In this paper, the principle of GNSS-R land remote sensing and its current development are described. Based on an analysis of the current situation of soil moisture monitoring in Chongqing, a customer demand-oriented comprehensive soil moisture monitoring system is designed. In the project design, based on a comparison of the temporal resolution, spatial resolution and representativeness among manual soil moisture measurement, surface meteorological station, automatic soil moisture monitoring, satellite remote sensing soil moisture monitoring and the proposed GNSS-R land remote sensing, the feasibility and desirableness of designing a comprehensive soil moisture monitoring system with GNSS-R land remote sensing as an important supplement are proved. It is significantly increase the soil moisture monitoring network density, fill the gap between automatic soil moisture stations and satellite remote sensing in temporal and spatial resolution, and also expand the new application of the GNSS-CORS network. Combined with the radar-estimated precipitation, satellite gravity and land data assimilation. This comprehensive soil moisturemonitoring system may provide a powerful support for the dynamic water resource monitoring of the Yangtze River.
Key words:  Chongqing  Global Navigation Satellite System Reflectometry  soil moisture  land remote sensing  satellite altimetry
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