Long Base Line Interferometry: A New Technique

Science  23 Jun 1967:
Vol. 156, Issue 3782, pp. 1592-1593
DOI: 10.1126/science.156.3782.1592


The technique of using magnetic-tape recorders and atomic frequency standards to operate two widely separated radio telescopes as a phase-coherent interferometer when the stations have no radio-frequency connecting link has been successfully tested at the National Research Council of Canada's Algonquin Radio Observatory.