Citation
Abstract
The potential accuracy attainable for AVLBI positional measurements (submilliarcsecond level) can be reached by simultaneously observing pairs of compact radio sources whose angular separations are smaller than the beamwidth of each antenna. Simultaneous AVEBI (SVLBI) enables significant cancellation of measurement errors. Solar plasma is the dominant fluctuating error source in SVLBI positional measurements since there is enhanced cancellation of the troposphere and ionosphere, and complete cancellation of oscillator instabilities. Of the nonfluctuating error sources, errors due to universal time predominate. By performing SVLBI experiments over several years with many different close pairs of radio sources, limits can be placed on reference-frame stability. Intrinsic properties of . the sources, such as source structure and proper motion, will limit measurements. The SVLBI differential phase and corruptive noise sources will be discussed here along with estimated results.
Details
- Volume
- 42-79
- Published
- November 15, 1984
- Pages
- 1–16
- File Size
- 1.0 MB