Literature Database Entry

clermont2024development

Vincent Mario Clermont, "Development and Test of the LIZARD Camera Subsystem for the Visual Evaluation of Microstructured Dry Adhesives Performance," Bachelor Thesis, School of Electrical Engineering and Computer Science (EECS), TU Berlin (TUB), April 2024. (Advisor: Lennart Ziemer; Referees: Falko Dressler and Enrico Stoll)

Abstract

Spacecraft in earth’s orbital environment provide indispensable services in areas of navigation, meteorology, research and communication. Some orbits are getting crowded by an ever-growing amount of space debris, threatening current and future space missions. Alongside mission disposal guidelines, Active Debris Removal (ADR) is a necessity to reduce the number of large space debris objects and remediate earth’s orbital environment. The Long-term Investigation of the effects of Zero-gravity, vAcuum and RaDiation (LIZARD) aims to assess the suitability of Microstructured Dry Adhesives (MDA) for use in docking mechanisms for ADR. Part of the LIZARD payload is a camera subsystem which provides a way to assess MDA performance through grayscale images. This thesis discusses the considerations made to ensure reliability of the camera subsystem and correctness of the data collected. Two environmental tests are performed, namely a Total Ionizing Dose (TID) test to evaluate radiation tolerance and a light exposure test to predict image degradation by sunlight. Furthermore, a compression scheme for captured images is chosen to prepare the data for downlink. Lastly, fault tolerance and spaceflight software safety standards are reviewed to design and implement a reliable system. No failure was observed during the TID test and it was found that sunlight can degrade image accuracy. A state machine design pattern was used for the flight software and redundancy was employed for data storage and on system level.

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Vincent Mario Clermont

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@phdthesis{clermont2024development,
    author = {Clermont, Vincent Mario},
    title = {{Development and Test of the LIZARD Camera Subsystem for the Visual Evaluation of Microstructured Dry Adhesives Performance}},
    advisor = {Ziemer, Lennart},
    institution = {School of Electrical Engineering and Computer Science (EECS)},
    location = {Berlin, Germany},
    month = {4},
    referee = {Dressler, Falko and Stoll, Enrico},
    school = {TU Berlin (TUB)},
    type = {Bachelor Thesis},
    year = {2024},
   }
   
   

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Last modified: 2024-10-14