Recent Developments in Shadow Imaging

David G. Sheppard, Integrity Applications Incorporated, Dennis M. Douglas, Integrity Applications Incorporated, Bobby R. Hunt, Integrity Applications Incorporated, Ariel Todoki, Integrity Applications Incorporated,

Keywords: Shadow imaging, GEO satellites, unconventional imaging

Abstract:

Shadow imaging is a technique to obtain highly resolved silhouettes of resident space objects (RSOs) which would otherwise be unattainable using conventional terrestrial based imaging approaches. This is done by post processing the measured irradiance pattern (shadow) cast onto the Earth as the RSO occults a star. The research presented here focuses on recent developments in shadow imaging of geosynchronous (GEO) satellites with near stationary orbits approximately 36,000 km from the Earth. A high fidelity shadow prediction tool is presented and verified using data collects taken by small aperture Raven class telescopes. The morphology of shadow densities on the Earth is shown in the context of the local galactic orientation over the course of a year, and is used to explore advantageous collection system location.

Date of Conference: September 19-22, 2017

Track: Poster

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