Citation
Abstract
A series of experiments was conducted for the purpose of characterizing the effects of short-term atmospheric-induced temperature fluctuations at 32 GHz (Ka-band) at DSS 13 in Goldstone, California. Total power radiometer (TPR) data were acquired at both 8.4-GHz (X-band) and Ka-band frequencies at 1-s integrations rather than the usual 5-s integrations. This effort to characterize the magnitude and statistics of atmospheric-induced system temperature fluctuations at short time scales (about 1 s) is motivated by the need to predict their effect on Ka-band spacecraft telemetry during cloudy or rainy weather conditions. The TPR zenith sky temperature fluctuations presented in this article at 1-s time scales were found to be dominated by system noise and gain instability during clear weather conditions and by the wet troposphere during turbulent cloudy/rainy weather.
Keywords
Details
- Volume
- 42-150
- Published
- August 15, 2002
- Pages
- 1–17
- File Size
- 219.7 KB