Relativistic effects in radar, optical and radiointerferometric measurements

Details Relativistic effects in radar, optical and radiointerferometric measurements Relativistic effects in radar, optical and radiointerferometric measurements

Sep 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979muni.iafcq....b&link_type=abstract

International Astronautical Federation, International Astronautical Congress, 30th, Munich, West Germany, Sept. 17-22, 1979, Pap

Astronomy and Astrophysics

Astronomy

Optical Measurement, Radar Measurement, Radio Interferometers, Relativistic Effects, Doppler Radar, Equations Of Motion, Frequency Shift, Light Transmission, Relativity, Solar System, Time Lag

Scientific paper

The relativistic post-Newtonian effects in round-trip transit time of radar signal between planets and geocentric angular distances between the sun and a planet and between a quasar and a planet have been considered in Brumberg, Finkelstein (1979). It was shown that: (1) these quantities may be expressed only in terms of the measured initial values of any kind, and (2) the relativistic corrections in the values of physically measurable quantities depend on the type of initial measurements. In the present paper these calculations are extended to the remaining kinds of astronomical measurements (Doppler measurements and radiointerferometry in the Solar system and earth). It is noted that each considered quantity is expressed initially in coordinate form valid for the actual motion of the planets and for any position of a light source (a quasar) with respect to the planets. Finally, the relativistic effects considered are of importance in discussing accurate observations of not only natural planets but artificial probes as well.

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