Angular navigation on short baselines using phase delay interferometry

Details Angular navigation on short baselines using phase delay interferometry Angular navigation on short baselines using phase delay interferometry

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989itim...38..665e&link_type=abstract

(Society of Instrument and Control Engineers of Japan, IEEE, URSI, et al., Conference on Precision Electromagnetic Measurements,

Physics

Optics

Fiber Optics, Interferometry, Navigation Aids, Phase Detectors, Space Navigation, Time Lag, Radio Sources (Astronomy), Very Long Base Interferometry

Scientific paper

Results are presented for two recent short baseline experiments, with baseline lengths of 6 and 253 km, showing delay residuals of 10 ps or less for angularly close sources. On the 6-km baseline, a fiber-optic link was used to distribute a common frequency reference, enabling coherent operation of the two stations. The observed delay residuals correspond to a differential angular accuracy of about 10 nrad on the 253-km baseline. Future plans are discussed, including the development of a realtime correlation capability on a 22-km baseline at Goldstone, CA.

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