A study of radio frequency interference with the Nimbus-7 Scanning Multichannel Microwave Radiometer (SMMR)
Abstract
One of the important objectives of the NIMBUS-7 Scanning Multichannel Microwave Radiometer (SMMR) is to demonstrate the feasibility of all weather measurements of various ocean parameters; such as sea surface temperature (SST) and near surface wind speed (WS). These ocean parameters can be determined from multispectral measurements of ocean brightness temperatures in the microwave region of the electromagnetic spectrum. These microwave measurements, however, are distorted if the field of view of the SMMR antenna encounters radio transmissions from terrestrial sources. Sources of terrestrial Radio Frequency Interference (RFI) in the SMMR ocean data were identified. Its extent and characteristics over different ocean areas on the Earth were determined.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- November 1980
- Bibcode:
- 1980STIN...8119362K
- Keywords:
-
- Brightness Temperature;
- Conical Scanning;
- Microwave Radiometers;
- Nimbus Project;
- Oceanographic Parameters;
- Radio Frequency Interference;
- Antenna Radiation Patterns;
- Multispectral Band Scanners;
- Nimbus 7 Satellite;
- Ocean Surface;
- Surface Temperature;
- Tables (Data);
- Communications and Radar