Quantum mechanical uncertainty limitations on deep space navigation by Doppler tracking and very long baseline interferometry.
Abstract
The ultimate precision with which very long baseline interferometry (VLBI) can determine the angular position of a spacecraft is determined by the quantum mechanical limitations on the performance of the interferometer receivers and the quantum mechanical uncertainty relation ∆N∆Φ ≥ 1. It is shown that for the navigation of a typical deep space mission using presentday techniques, fundamental physics imposes limits on the precision of spacecraft navigation. The limitations which are a consequence of quantum mechanical uncertainty on the determinations of the phase of a spacecraft tracking signal may be circumvented in principle by the application of squeezed quantum states.
 Publication:

Radio Science
 Pub Date:
 April 1990
 DOI:
 10.1029/RS025i002p00097
 Bibcode:
 1990RaSc...25...97C
 Keywords:

 Quantum Mechanics;
 Space Navigation;
 Spacecraft Tracking;
 Very Long Base Interferometry;
 Deep Space;
 Doppler Radar;
 Squeezed States (Quantum Theory);
 Space Communications, Spacecraft Communications, Command and Tracking;
 Space Missions: Navigation