Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations

Details Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations

Apr 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974rarlj..21..543k&link_type=abstract

Radio Research Laboratories, Journal, vol. 21, no. 107, 1974, p. 543-550.

Computer Science

Performance

1

Cassegrain Antennas, Error Analysis, Instrument Errors, Performance Prediction, Pointing Control Systems, Radio Astronomy, Antenna Design, Antenna Radiation Patterns, Azimuth, Calibrating, Polarization Characteristics, Position Errors, Power Gain

Scientific paper

We have measured pointing accuracy and the electrical performance of the Kashima 26m phi Cassegrain antenna by means of radiometric observation of cosmic radio sources at the frequency of 4.2 GHz. There are four causes of instrumental errors in pointing of the antenna of an azimuth-elevation mount. We have obtained the following values of the errors. These are (1) a deviation of the azimuth axis direction from zenith, 5.8 millidegrees, (2) nonorthogonality of the azimuth and elevation axes, 5.0 millidegrees, (3) nonorthogonality of the antenna-beam axis and elevation axis, -5 millidegrees, and (4) gravitational deflection of the antenna structure, 0.42 millidegrees/deg. in elevation angle. The decrease of the antenna gain at low elevation angle is a few percent in every polarization, and half power beam width (HPBW) shows almost no change in any elevation and azimuth angle, but fairly depends on polarization.

Affiliated with

Also associated with

No associations

Rating

Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations 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 Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pointing accuracy and electrical performance of Kashima 26m phi antenna, obtained from radio astronomical observations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-812694