AVU/BAM: Software refurbishment (design and implementation) for the CU3 Gaia Verification Pipeline

摘要

AVU/BAM is the Gaia software for the Astrometric Verification Unit (AVU) devoted to the monitoring of the Basic Angle Monitoring (BAM), one of the metrology instruments onboard of the Gaia Payload. AVU/BAM is integrated and operative at the Data Processing Center of Turin (DPCT), since the beginning of the Gaia Mission. The DPCT infrastructure performs the ingestion of pre-elaborated data coming from the satellite and it's responsible of running the code of different Verification Packages. The new structure of the pipeline consists of three phases: the first is a pre-analysis in which a preliminary study data is performed, with the calculation of quantities needed to the analysis; the second one processes the interferograms coming from the instrument; the third phase analyzes the data obtained from the previous processing. Also it has been changed part of the long-term analysis and was added a phase of calibration of the data obtained from the processing.