Study of lunar librations using differential very-long-baseline observations of ALSEPs
Abstract
Observations of signals from the ALSEP transmitters via differential very-long-baseline interferometry (VLBI) are being made to determine the relative selenocentric coordinates of the ALSEPs and the motion of the moon about its center of mass. By VLBI the relative positions of the ALSEPs can be determined with uncertainties less than 5 meters, and the orientation of the moon within 0.5 second of selenocentric arc.
- Publication:
-
In: Recent advances in engineering science. Volume 8. (A77-39904 18-31) Boston
- Pub Date:
- 1977
- Bibcode:
- 1977raes....8..431K
- Keywords:
-
- Interferometry;
- Librational Motion;
- Moon;
- Radio Interferometers;
- Radio Tracking;
- Body Kinematics;
- Error Analysis;
- Lunar Surface;
- Position Errors;
- Position Indicators;
- Selenology;
- Spacecraft Tracking;
- Lunar and Planetary Exploration