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A dedicated 24 h S/X dual-band geodetic very long baseline interferometry (VLBI) experiment was conducted in January 2015 with the goal of improving the position estimates for the Chinese Deep Space Station Kashi. Previously, the position estimates had been only accurate to ~20 cm, which is insufficient for future Chinese deep space explorations. The experiment design and data reduction are described...
This paper presents a comparative study of different frequency sequences which are used for Very Long Baseline Interferometry (VLBI) Bandwidth Synthesis (BWS) in recent astrometric and geodetic VLBI campaigns. The Peak Sidelobe (PS) level of Delay Resolution Function (DRF), Normalized Effective Bandwidth (NEB) and Frequency Ratio (FR) are defined as the metrics for comparison. Considering the case...
This paper presents the algorithm and results of designing optimal frequency sequences for Very Long Baseline Interferometry (VLBI) Bandwidth Synthesis (BWS) in VLBI experiments conducted jointly by Chinese Deep Space Stations (CDSS) and Chinese VLBI Stations (CVS). The optimization algorithm based on global search is intended to get lower peak side lobe level of delay resolution function and larger...
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