Fringe detection methods for very long baseline arrays

Details Fringe detection methods for very long baseline arrays Fringe detection methods for very long baseline arrays

Mar 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aj....109.1391r&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 109, no. 3, p. 1391-1401

Mathematics

Probability

26

Correlation Detection, Millimeter Waves, Radio Astronomy, Signal Detection, Signal Processing, Signal To Noise Ratios, Very Long Base Interferometry, Amplitudes, Analysis (Mathematics), Coherence Coefficient, Probability Distribution Functions, Sensitivity

Scientific paper

In VLBI observations, atmospheric turbulence and local oscillator phase noise often limit the coherence time to a few seconds. When such coherence losses severely limit the integration time, detection thresholds rise and weak sources cannot be detected. We show here that under these conditions. the detection methods and measurements of visibility amplitude and phase can be reformulated in terms of incoherently averaged quantities. The theory is presented by examining the properties of averaged amplitudes and triple products. This paper reviews current detection methods, discusses new techniques, presents applications to recent 3 mm VLBI experiments, and shows that signal processing can significantly improve the probability of signal detection.

Affiliated with

Also associated with

No associations

Rating

Fringe detection methods for very long baseline arrays 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 Fringe detection methods for very long baseline arrays, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fringe detection methods for very long baseline arrays will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-884006