The smallsat revolution has impacted the architecture of most modern satellites with the notable exception of fine-pointing space telescopes. Conventional attitude control hardware scales poorly as the spacecraft gets smaller, resulting in significant mass and performance penalties for nanosatellites with strict pointing requirements. This paper presents a novel attitude actuation and planning strategy that utilizes actuated booms with tip masses and magnetorquers for three-axis pointing and momentum desaturation. The speed of the booms is an appropriate match for the slowly varying environmental disturbance torques encountered in low-Earth orbit. As a result, these booms do not create the high-frequency jitter that reaction wheels do, lessening the need for complex second-stage correction hardware in the payload. An optimization-based motion planner is able to reason about the orbital ephemeris to ensure the booms never exceed their actuation limits, and a Linear Quadratic Gaussian controller is able to maintain fine-pointing during times of payload operation.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Ultra-Fine Pointing for Nanosatellite Telescopes With Actuated Booms


    Contributors:


    Publication date :

    2022-03-05


    Size :

    2475435 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English






    Scanning Offner Relay Simplifies Fine Pointing Of Large Telescopes

    Kadogawa, Hiroshi / Wade, Lawrence A. | NTRS | 1996


    Cable-Actuated Articulated Cylindrical Tensegrity Booms

    Roffman, Kaila M. / Lesieutre, George A. | AIAA | 2019