The objective of ExoMars mission (ESA) is to land and operate on Mars the Rosalind rover to search for signs of past and recent life. Before the Ukrainian crisis broke out, the rover was to be launched in September 2022 by a Proton rocket and land in March 2023 in the Oxia Planum region. The current perspective is now to fly this mission in 2028 in order to allow the development of a new lander. As regards the rover, designed by Airbus D&S UK (ADS-UK), it will be operated in different modes including Autonomous Navigation (A.N.) to extend the traverse capability up to 70 m/sol. In 2018, following a CNES/UKSA agreement to cooperate in the field of planetary rover autonomous navigation, a Contract Change Notice was approved by ESA for supporting the implementation of the CNES A.N. solution in complement of the already contracted ADS-UK solution. The presence of two Autonomous Navigation solutions on-board the rover has introduced some design and schedule constraints but brought higher flexibility and robustness due to the different characteristics of the solutions from the functional scope and performance perspective. Today, the software development and validation for both solutions is achieved and the validation by the prime contractor Thales Alenia Space (TAS-I) has been performed using the Rover Ground Test Model. Specific challenges were faced during the course of the project due to the stringent reliability requirements imposed on the Autonomous Navigation functionality. Even though any abort of the A.N. software has no impact on the mission safety since the rover will stop and wait for operator instructions, it is of paramount importance to guarantee that the commanded path will never put the rover into a configuration that would lead to the loss of the mission or dramatically impair the rover motion capability. The paper focuses on the validation approach adopted to fulfil the safety requirements while addressing the very specific technical and schedule challenges imposed to the whole software project.


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    Titel :

    CNES Autonomous Navigation Solution for ExoMars Rover: Validation Approach and Results


    Weitere Titelangaben:

    Springer Aerospace Techn.


    Beteiligte:
    Lee, Young H. (Herausgeber:in) / Schmidt, Alexander (Herausgeber:in) / Trollope, Ed (Herausgeber:in) / Delpech, Michel (Autor:in) / Valenzuela, Irene (Autor:in)

    Kongress:

    International Conference on Space Operations ; 2023 ; Dubai, United Arab Emirates March 06, 2023 - March 10, 2023


    Erschienen in:

    Space Operations ; Kapitel : 16 ; 339-371


    Erscheinungsdatum :

    14.12.2024


    Format / Umfang :

    33 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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