In this study, we develop strategies to simulate high-fidelity star tracker images. Improving simulation fidelity enables better quantitative predictions of sensor performance, particularly during agile attitude maneuvers. These high-fidelity simulations use star tracker calibration parameters, detector sensitivity, and a simple representation of the spacecraft's attitude trajectories to synthesize images useful for detailed study of the star tracker accuracy and availability. The simulations include a variety of non-ideal imaging features such as pixel noise, vignetting, distortion, and nonlinear star tracks. The effectiveness of these high-fidelity simulations is assessed by comparing image features and processed sensor measurements obtained from synthetic images with those extracted from the laboratory, night-sky, and on-orbit sensor telemetry.


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    Title :

    Accurate Star Tracker Simulation with On-Orbit Data Verification


    Contributors:


    Publication date :

    2019-03-01


    Size :

    726223 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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