HR: 1330h
AN: H32B-0570    [PDF]
TI: Global Survey of 6.9 GHz Radio Frequency Interference and Implications for Future Remote Sensing
AU: * Ashcroft, P
EM: ashcroft@remss.com
AF: Remote Sensing Systems, 438 First St. Suite 200, Santa Rosa, CA 95401 United States
AU: Njoku, E G
EM: eni.g.njoku@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Li, L
EM: li.li@jpl.nasa.gov
AF: Jet Propulsion Laboratory, 4800 Oak Grove Drive, Pasadena, CA 91109 United States
AU: Wentz, F
EM: wentz@remss.com
AF: Remote Sensing Systems, 438 First St. Suite 200, Santa Rosa, CA 95401 United States
AB: The AMSR-E instrument on the AQUA platform affords a nearly unprecedented opportunity to monitor the Earth at the 6.9 GHz microwave band. In this respect, AMSR-E prefigures other instruments that will extend microwave remote sensing to even lower frequencies. These measurements have already proven useful for investigations of sea surface temperature and soil moisture. Unfortunately, expanding use of this band for telecommunications is increasingly leading to Radio Frequency Interference (RFI) conflicts with remote sensing needs. Drawing on an archive of more than one year of AMSR-E data, we present a global survey of RFI sources, focusing on both spatial and temporal characteristics. In many cases, RFI is easily recognizable either due to its intensity or its correlation with known population centers. While the obvious RFI, (almost all of which is over land), can be disregarded in studies of natural phenomena, the challenge is to identify RFI when the signature is not obvious. This discrimination will provide the dual benefits of salvaging data that would otherwise be discarded, while ensuring that only untainted data is used for studying natural phenomena. This paper explores several criteria that may be used for this purpose.
DE: 1640 Remote sensing
DE: 1866 Soil moisture
DE: 6914 Electromagnetic noise and interference
SC: Hydrology [H]
MN: 2003 Fall Meeting