University of Canterbury Home
    • Admin
    UC Research Repository
    UC Library
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    View Item 
    1. UC Home
    2. Library
    3. UC Research Repository
    4. Faculty of Engineering | Te Kaupeka Pūhanga
    5. Engineering: Conference Contributions
    6. View Item
    1. UC Home
    2.  > 
    3. Library
    4.  > 
    5. UC Research Repository
    6.  > 
    7. Faculty of Engineering | Te Kaupeka Pūhanga
    8.  > 
    9. Engineering: Conference Contributions
    10.  > 
    11. View Item

    A Hybrid Adaptive Optics System for Space Situational Awareness (2019)

    Thumbnail
    View/Open
    Accepted version (219.8Kb)
    Type of Content
    Conference Contributions - Published
    UC Permalink
    https://hdl.handle.net/10092/18358
    
    Collections
    • Engineering: Conference Contributions [2298]
    Authors
    Weddell, Stephen John
    Clare, Richard
    Muruganandan, V.A.
    Lambert, Andrew
    show all
    Editors
    Vdovin, G.
    Abstract

    We are developing and will commission a space debris and object detection system in New Zealand that will provide high resolution capability to examine orbiting near Earth objects using a simplified, low-cost approach, where acquired data on new candidate objects are updated on a database. We will use a modular wide-field adaptive optics (AO) system to determine spatially variant distortion functions from multiple natural guide stars to compensate for atmospheric turbulence. To achieve this, our custom designed geometric wavefront sensor will provide estimates of phase distortion from each source object. Orbiting satellites and large space debris objects are detected within a wide field of natural stars, where a combination of closed- and open-loop adaptive optics are applied. A closed loop tip/tilt mirror system removes low-order aberrations in real-time, whereas an open-loop system will use deconvolution from wavefront sensing with batch processing to remove high-order distortion. Fast moving target objects will be imaged using a separate detector, where high frame rate-images of relatively bright objects will be used to minimise motion blur, and where synchronisation with AO cameras will allow removal of both low- and high-order aberrations from captured images. The hybrid AO system described in this paper will provide a platform to test novel methods for the detection of small, faint, fast-moving objects using alternative methods to atmospheric tomography.

    Citation
    Weddell S, Clare R, Muruganandan V, Lambert A (2019). A Hybrid Adaptive Optics System for Space Situational Awareness. Delft, Netherlands: Adaptive Optics in Industry and Medcine. 21/10/2019-25/10/2019. The XII International Workshop on the Adaptive Optics in Industry and Medicine.
    This citation is automatically generated and may be unreliable. Use as a guide only.
    ANZSRC Fields of Research
    51 - Physical sciences::5109 - Space sciences::510906 - Space instrumentation
    46 - Information and computing sciences::4603 - Computer vision and multimedia computation::460301 - Active sensing
    40 - Engineering::4009 - Electronics, sensors and digital hardware::400909 - Photonic and electro-optical devices, sensors and systems (excl. communications)

    Related items

    Showing items related by title, author, creator and subject.

    • Pyramid wavefront sensing in the presence of thick spiders 

      Engler B; Weddell S; Miska LL; Christoph V; Clare R (2019)
      One of the challenges faced by the adaptive optics systems on extremely large telescopes, such as the European Extremely Large Telescope (EELT), is the pupil segmentation caused by the secondary mirror support ...
    • Artificial Intelligence Based Insulin Sensitivity Prediction for Personalized Glycaemic Control in Intensive Care 

      Benyó B; Paláncz B; Szlávecz Á; Szabó B; Anane Y; Kovács K; Chase, Geoff (Elsevier BV, 2020)
      Stress-induced hyperglycaemia is a frequent complication in the intensive therapy that can be safely and efficiently treated by using the recently developed model-based tight glycaemic control (TGC) protocols. The most ...
    • Development of a Discrete Spectrometric NIR Reflectance Glucometer 

      Campbell JD; Holder-Pearson, Lui; Benton C; Chase, Geoff; Pretty, Christopher; Knopp, Jennifer (Elsevier BV, 2020)
      Abstract: Currently, there are no continuous, non-invasive blood glucose monitors. With over 366 million people worldwide expected to be diagnosed as diabetic by 2030, an alternative to the current invasive methods is ...
    Advanced Search

    Browse

    All of the RepositoryCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThesis DisciplineThis CollectionBy Issue DateAuthorsTitlesSubjectsThesis Discipline

    Statistics

    View Usage Statistics
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer
    • SUBMISSIONS
    • Research Outputs
    • UC Theses
    • CONTACTS
    • Send Feedback
    • +64 3 369 3853
    • ucresearchrepository@canterbury.ac.nz
    • ABOUT
    • UC Research Repository Guide
    • Copyright and Disclaimer