IPS limits on very low frequency VLBIThe ability of a space-based radio interferometer array to make high resolution images at frequencies of only a few MHz will be limited by interplanetary scintillation. Numerical simulations have been used to study the severity of interferometer phase fluctuations caused by the density fluctuations in the solar wind over a range of frequencies and solar elongation angles. The impact of these fluctuations on the quality of radio images produced has also been investigated. The results show that, for baselines up to 100 km, accurate imaging should be possible when nu sin (epsilon/2) is equal to or greater than 2.5, where nu is the observing frequency in MHz and epsilon is the solar elongation angle.
Document ID
19910050388
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Jones, Dayton L. (JPL Pasadena, CA, United States)
Williamson, Robert S., III (California Institute of Technology Pasadena, United States)