Abstract:

The accelerated pressure algorithm, which would improve the Boone pressure algorithm in solution and convergence, can eliminate the top Na uv distribution dispersions of sampling points by moving the array; where Na is the number of antenna in array, namely it can amend the uv distribution maximally in an iterat ive evolut ion, hence the result is as close as possible. The comparison between APA and pressure algorithm showed its validity and high efficiency by the ALMA array configuration. Finally, the simulation-based model of Gaussian distribution is conducted on interferometric array configuration constructing by the national astronomical observatory.

Key words: heliography, interferometric array, array conf igurat ion, accelerated pressure algorithm