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气象:2010,36(6):112-116
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利用风云二号卫星信号进行电离层闪烁监测的方法
(1.广州气象卫星地面站, 广州 510640;2.国家卫星气象中心, 北京 100081)
A Method of the Ionospheric Scintillation Monitoring Based on the FY-2 Satellite Signals
(1.uangzhou Meteorological Satellite Station, Guangzhou 510640;2.National Center for Space Weather Monitoring and Warning, National Statellite Meteorological Center, Beijing 100081)
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投稿时间:2008-09-20    修订日期:2010-01-24
中文摘要: 利用风云二号卫星业务遥测信号进行电离层闪烁监测,根据其信号特点研究开发了监测仪。该监测仪用于实时监测分析风云二号卫星信号因电离层不规则结构引起的幅度闪烁和相位闪烁。风云二号业务遥测信号是一个1.7 GHz的调相信号,其发射振幅稳定,负载的信号精确可知,在中国及周边地区可以被用来进行电离层闪烁监测研究。由于风云二号是静止卫星,其监测结果将不存在卫星运动所附带的变化,容易将时间和空间变化分离开,因而比GPS闪烁监测更具优越性。该仪器将基于目前遍布全国的风云卫星展宽云图接收设备,在使用风云卫星展宽云图接收机天线、高频及第一中频通道的情况下进行设计,因此有利于未来的在全国范围内进行推广和组网监测。另外,风云二号已经实现双星、组网观测,其提供的两个不同方向的同频信号源将大大提高监测仪的应用价值。该仪器与GPS双频闪烁监测配合,还将能获得电离层闪烁特性的谱特征。
Abstract:This paper describes the principles and methods of monitoring the ionospheric scintillation based on the FY-2 Satellite operational telemetry signals and how the monitor works. The monitor watches real time satellite signals for scintillation in both amplitude and phase. The telemetry signal from the satellite is one of phase modulation at 1.7 GHz, which is stable in the emission amplitudes and accessible and accurate in the signals loaded. It can be used in the research on ionospheric scintillation in and around China. As the FY-2  Satellite is geostationary and monitors without changes inherent with the motion of the satellite, it is easy to separate the temporal changes from the spatial ones, making it more advantageous than the monitoring with GPS. Designed on the basis of the receivers for broadened cloud imagery that are widely installed across China and with the use of their antenna and channels and high and first intermediate frequencies, the monitoring instrument in question will be readily accepted nationwide and joined in network monitoring. In addition, it will be much more useful due to the availability of signal sources emitting the same frequency in two different directions from the existing networked twin satellites. When combined with the GPS based dual frequency scintillation monitors, this monitoring device will also be able to have access to the spectral characteristics of the ionospheric scintillation.
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基金项目:国家863高技术研究发展计划资助项目(2009AA12Z137、2007AA12Z314),国家自然科学基金委员会资助项目(40674077),中国气象局气象新技术推广项目(CMATG2008M24)共同资助
引用文本:
单海滨,王劲松,张效信,张荣楷,徐杰,曹静,赵文化,2010.利用风云二号卫星信号进行电离层闪烁监测的方法[J].气象,36(6):112-116.
SHAN Haibin,WANG Jinsong,ZHANG Xiaoxin,ZHANG Rongkai,XU Jie,CAO Jing,ZHAO Wenhua,2010.A Method of the Ionospheric Scintillation Monitoring Based on the FY-2 Satellite Signals[J].Meteor Mon,36(6):112-116.