A preliminary survey of radio-frequency interference over the U.S. in Aqua AMSR-E data
- 19 February 2004
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Geoscience and Remote Sensing
- Vol. 42 (2) , 380-390
- https://doi.org/10.1109/tgrs.2003.817195
Abstract
A spectral difference method is used to quantify the magnitude and extent of radio-frequency interference (RFI) observed over the United States in the Aqua AMSR-E radiometer channels. A survey using data from the AMSR-E instrument launched in May 2002 shows the interference to be widespread in the C-band (6.9 GHz) channels. The RFI is located mostly, but not always, near large highly populated urban areas. The locations of interference are persistent in time, but the magnitudes show temporal and directional variability. Strong and moderate RFI can be identified relatively easily using an RFI index derived from the spectral difference between the 6.9- and 10.7-GHz channels. Weak RFI is difficult to distinguish, however, from natural geophysical variability. These findings have implications for future microwave sensing at C-band, particularly over land areas. An innovative concept for radiometer system design is also discussed as a possible mitigation approach.Keywords
This publication has 11 references indexed in Scilit:
- Design of an L-band microwave radiometer with active mitigation of interferencePublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- Phase one development of the NPOESS Conical-scanning Microwave Imager/Sounder (CMIS)Published by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Instrument characteristics and calibration of AMSR and AMSR-EPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2003
- Spaceborne polarimetric microwave radiometry and the Coriolis WindSat systemPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- The Status of the Tropical Rainfall Measuring Mission (TRMM) after Two Years in OrbitJournal of Applied Meteorology and Climatology, 2000
- Retrieval of land surface parameters using passive microwave measurements at 6-18 GHzIEEE Transactions on Geoscience and Remote Sensing, 1999
- Removal of RFI in wideband radarsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1998
- RFI suppression for ultra wideband radarIEEE Transactions on Aerospace and Electronic Systems, 1997
- SSM/I instrument evaluationIEEE Transactions on Geoscience and Remote Sensing, 1990
- The Seasat scanning multichannel microwave radiometer (SMMR): Instrument description and performanceIEEE Journal of Oceanic Engineering, 1980