自然资源遥感2017，Vol.29Issue(3)：176-181,6.DOI:10.6046/gtzyyg.2017.03.26
被动微波遥感观测资料干扰对地表参数反演的影响分析
Effect of radio-frequency interference on the land surface parameters retrieval from passive microwave remote sensing data
摘要
Abstract
Radio-frequency interference (RFI) over eastern Asia land was detected and analyzed using one dimensional variational retrieval (1-DVAR) convergence metric method from AMSR-E (the advanced microwave scanning radiometer-earth observing system) Leval 2A measurements during July 1-16, 2011.And then its influence on the retrieval of surface parameters was studied.It is found that the RFI signals are detected both at C and X band channels of AMSR-E over eastern Asia, and the signals are most densely concentrated in industrial zones, scientific research centers, metropolises, airports and highways.Moreover, RFI signals at C and X band normally do not coincide with the same distribution area.AMSR-E RFI over eastern Asia land exists along both horizontal and vertical polarization channels.Furthermore, the intensity of AMSR-E RFI varies with the earth azimuth angle of the satellite;measurements are contaminated by RFI only when the spaceborne microwave radiometer is within some earth azimuth angle range.Lastly, it is also found that retrieved land parameters have large deviations from RFI contaminated microwave measurements.Therefore, it is expected to detect even weakened RFI effectively prior to retrieving land surface parameters from passive microwave remote sensing measurements.关键词
被动微波遥感/地表参数/无线电频率干扰(RFI)/东亚陆地Key words
passive microwave remote sensing/land surface parameter/radio-frequency interference (RFI)/eastern Asia land分类
天文与地球科学引用本文复制引用
吴莹,钱博,王振会..被动微波遥感观测资料干扰对地表参数反演的影响分析[J].自然资源遥感,2017,29(3):176-181,6.基金项目
国家自然科学基金项目"FY-3微波数据RFI订正及我国典型地区地表微波发射率反演研究"(编号: 41305033)、江苏省基础研究计划-青年基金项目"微波地表温度计算及其对中国典型地区地表发射率反演改进研究"(编号: BK20150911)和江苏高校优势学科建设工程资助项目(PAPD)共同资助. （编号: 41305033）
