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    Area of Science:

    • Astronomy
    • Optical Engineering

    Background:

    • Shadow imaging reconstructs object silhouettes from diffraction patterns.
    • Synthetic-aperture silhouette imaging (SASI) applies this to geosynchronous satellites using commercial telescopes.

    Purpose of the Study:

    • To investigate the feasibility of achieving sub-meter resolution with SASI arrays.
    • To inform the design trade-offs for operational SASI arrays.

    Main Methods:

    • Simulated a linear array of commercial off-the-shelf telescopes.
    • Analyzed the impact of telescope spacing on resolution.
    • Evaluated configurations with up to three aperture diameter spaces and intermittent spacing.

    Main Results:

    • Sub-meter resolution is maintained with up to three aperture diameter spaces between telescopes.
    • Similar sub-meter resolution can be achieved with arrays using 25% of telescopes spaced intermittently.

    Conclusions:

    • SASI offers a cost-effective method for high-resolution satellite imaging.
    • Optimized telescope spacing is crucial for achieving desired resolution in SASI arrays.