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Reprinted from IEEE Transactions on Military Electronics, Vol. MIL-8, Numbers 3 and 4, July-October 1964. ; Research supported by the Space Physics Laboratory, Air Force Cambridge Research Laboratories, Office of Aerospace Research, United States Air Force, L.G. Hanscom Field, Massachusetts. ; Space Physics Laboratory Project 4643. ; "January 1965." ; Includes bibliographical references. ; Mode of access: Internet.

Comprehensive, authoritative coverage of interferometric techniques for radio astronomy. In this Second Edition of Interferometry and Synthesis in Radio Astronomy, three leading figures in the development of large imaging arrays, including very-long-baseline interferometry (VLBI), describe and explain the technology that provides images of the universe with an angular resolution as fine as 1/20,000 of an arcsecond. This comprehensive volume begins with a historical review followed by detailed coverage of the theory of interferometry and synthesis imaging, analysis of interferometer response, g.

Very-long-baseline interferometry (VLBI) for high-resolution astronomical imaging requires phase-stable frequency references at widely separated radio-telescope antennas. For the first time to our knowledge, we have disseminated a suitable radio-frequency (RF) reference for VLBI over a "real-world" telecom optical-fiber link between radio telescopes that are >100 km apart, by means of an innovative phase-conjugation technique. Bidirectional optical amplification is used in parallel with live traffic, and phase perturbations in the effective optical-fiber path length are compensated. This RF-over-fiber approach obviates the need for separate hydrogen masers at each antenna, offering significant advantages for radio-astronomy facilities such as the Square Kilometer Array. ; The Australia Telescope Compact Array (ATCA) is part of the Australia Telescope National Facility (ATNF), which is funded by the Australian government for operation as a National Facility managed by CSIRO.