X-band noise temperature near the Sun at a 34-meter high efficiency antenna

Details X-band noise temperature near the Sun at a 34-meter high efficiency antenna X-band noise temperature near the Sun at a 34-meter high efficiency antenna

May 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988tdapr..93..247r&link_type=abstract

In its The Telecommunications and Data Acquisition Report p 247-256 (SEE N88-28178 22-32)

Physics

Antenna Design, Noise Temperature, Solar Activity Effects, Superhigh Frequencies, Solar Radiation, Temperature Measurement

Scientific paper

The X-band system noise temperature near the Sun was measured at the DSS 15, a 34 meter high efficiency (HEF) antenna, in November 1987. Data was taken at angles off the center of the Sun from 0 to 4 degrees. At angles greater than 0.5 degree, the measured results agree with Voyager tracking data taken at solar conjunction in late December 1987. Within the solar disk, at angles lower than 0.27 degree, the temperature measured was lower than the prediction of a model by 30 percent, after adjusting for known receiver nonlinearities. The discrepancy in this extreme case is probably caused by unknown nonlinearities in the receiver, uncertainties in the model, or both. The measurement is nevertheless credible for practically all Sun-Earth-probe angles of interest to deep space missions.

Affiliated with

Also associated with

No associations

Rating

X-band noise temperature near the Sun at a 34-meter high efficiency antenna does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with X-band noise temperature near the Sun at a 34-meter high efficiency antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and X-band noise temperature near the Sun at a 34-meter high efficiency antenna will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-856609