RFI Characterization and Mitigation for the SMAP Radar

被引：17
|
作者：
Spencer, Michael W. [1 ]
Chen, Curtis W. [1 ]
Ghaemi, Hirad [1 ]
Chan, Samuel F. [1 ]
Belz, John E. [1 ]
机构：
[1] CALTECH, Jet Prop Lab, Pasadena, CA 91109 USA
来源：
IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING | 2013年 / 51卷 / 10期
基金：
美国国家航空航天局;
关键词：
Earth remote sensing; L-band radar systems; radio frequency interference (RFI); Soil Moisture Active-Passive (SMAP) mission; INSTRUMENT; MISSION;
D O I：
10.1109/TGRS.2013.2253472
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The Soil Moisture Active-Passive (SMAP) mission will launch in late 2014 and will carry a combined L-band radiometer/radar instrument for the retrieval of global soil moisture and surface freeze-thaw state. Radio frequency interference (RFI) is a known challenge for Earth remote sensing in the L-band portion of the spectrum. This paper addresses efforts to characterize and mitigate RFI for the SMAP radar. A model for the RFI environment due to surface-based emitters is developed, and is shown to agree well with the observations of currently operating L-band radar systems. An analysis of the environment due to space-based emitters is also presented. Techniques to mitigate RFI in the radar band are described, and are shown to perform sufficiently well to meet the stringent SMAP measurement requirements. A companion paper addresses the different issues encountered with RFI in the radiometer band.
引用
收藏
页码：4973 / 4982
页数：10
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