利用2014 年8 月1 至16 日AMSR-2 一个观测周期的资料详细分析了日本、中国及周边地区陆地上7.3 GHz 观测，研究结果表明：日本7.3 GHz 通道无线电频率干扰主要来源于视场反射的静止电视/通信卫星下发信号。除7.3 GHz外,日本6.9 GHz 和10.65 GHz 也存在无线电频率干扰(RFI)影响，主要来自长期稳定的离散地面固定源。越南全境内每天不论是升轨还是降轨7.3 GHz 都观测到很强的RFI。中国主要是7.3 GHz 和10.65 GHz 通道观测受污染，这两个频率受RFI 影响的地域与中国地基雷达站点分布吻合一致。a

AMSR-2 observations at 7.3 GHz from Aug. 1 to 16, 2014 over Japan, China and surrounding areas are carefully analyzed. The observations of 7.3 GHz channel in ascending portions of orbits are usually interfered over Japanese land, while no radio frequency interference (RFI) detected in descending passes. The signals emanating from geostationary communication and television satellites that reflect off the land surface are the major interference sources of these RFI. Besides 7.3 GHz, the measurements of 6.9 GHz and 10.65 GHz over Japan are all affected by RFI. These RFI signals are all from ground point target sources, being isolated in space and persistent in time. Strong and wide RFI are detected every day in Vietnam in both ascending and descending orbits. Both 7.3 GHz and 10.65 GHz information are all contaminated over China. The cities and areas affected by RFI at both frequencies are identical with the distribution of Chinese ground-based radar stations.