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Journal of Instrumentation Volume 4 December 2009 Create an alert RSS this journal

M Frailis et al 2009 JINST 4 T12021 doi:10.1088/1748-0221/4/12/T12021

A systematic approach to the Planck LFI end-to-end test and its application to the DPC Level 1 pipeline

OPEN ACCESS The Planck Low Frequency Instrument

M Frailisa, M Marisa, A Zaccheia, N Morissetb, R Rohlfsb, M Mehargab, P Binkob, M Türlerb, S Galeottaa, F Gasparoa, E Franceschic, R C Butlerc, O D'Arcangeloh, S Fogliania, A Gregoriof, S R Loweg, G Maggioa, M Malaspinac, N Mandolesic, P Manzatoa, F Pasiana, F Perrottad, M Sandric, L Terenzic, M Tomasie and A Zoncae

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Abstract References Cited By

Part of The Planck Low Frequency Instrument

The Level 1 of the Planck LFI Data Processing Centre (DPC) is devoted to the handling of the scientific and housekeeping telemetry. It is a critical component of the Planck ground segment which has to strictly commit to the project schedule to be ready for the launch and flight operations. In order to guarantee the quality necessary to achieve the objectives of the Planck mission, the design and development of the Level 1 software has followed the ESA Software Engineering Standards. A fundamental step in the software life cycle is the Verification and Validation of the software. The purpose of this work is to show an example of procedures, test development and analysis successfully applied to a key software project of an ESA mission. We present the end-to-end validation tests performed on the Level 1 of the LFI-DPC, by detailing the methods used and the results obtained. Different approaches have been used to test the scientific and housekeeping data processing. Scientific data processing has been tested by injecting signals with known properties directly into the acquisition electronics, in order to generate a test dataset of real telemetry data and reproduce as much as possible nominal conditions. For the HK telemetry processing, validation software have been developed to inject known parameter values into a set of real housekeeping packets and perform a comparison with the corresponding timelines generated by the Level 1. With the proposed validation and verification procedure, where the on-board and ground processing are viewed as a single pipeline, we demonstrated that the scientific and housekeeping processing of the Planck-LFI raw data is correct and meets the project requirements.

Keywords

Instruments for CMB observations

Software Engineering

Data Handling

Space instrumentation

PACS

07.05.Hd Data acquisition: hardware and software

95.55.-n Astronomical and space-research instrumentation

84.40.Xb Telemetry: remote control, remote sensing; radar

Subjects

Electronics and devices

Instrumentation and measurement

Astrophysics and astroparticles

Dates

Issue 12 (December 2009)

Received 24 June 2009, accepted for publication 23 November 2009

Published 29 December 2009



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