摘要
我国海冰已成为除风暴潮之外最严重的海洋灾害,同时海冰的存在也直接影响到地球、大气系统的能量收支,因此需要对海冰进行深入的了解。论述了基于全球导航卫星系统反射信号(GNSS-R)在海冰介电常数和海冰密集程度方面的潜在的研究价值,通过对欧洲空间局(ESA)在格林兰岛迪斯科海岸采集的海冰数据进行分析,使用跟踪多颗GPS卫星并且保证数据处理时间的连续性和有效性,分析结果显示:幅度极化比值随着时间的变化趋势与海冰的形成和消融过程中海冰的密集程度有明显的关系。
In our country, sea ice has become one of the most serious marine disasters in addition to storm surge, and at the same time, the existence of the sea ice is also directly affect the earth, the energy of budget atmosphere system, so need to in-depth understanding of sea ice. This paper evaluates the potential use of reflected signals from global navigation aatellite systems as a source of opportunity for sea ice permittivity and concentration research. We use GNSS-R sea ice observation data at Greenland island from ESA to perform this stud- y. We tried to track several different satellites to estimate polarimetric ratio of dual polarization of the reflected signals, result shows that the different normalized ratio of the reflected signal is closely linked with the sea ice formation and ablation procedure.
出处
《全球定位系统》
2013年第2期1-6,共6页
Gnss World of China
基金
上海高校特聘教授(东方学者)岗位计划资助
上海市科学技术委员会的资助(批准号:11510501300)
