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Rapid satellite-to-site visibility determination is of great significance tocoverage analysis of satellite constellations as well as onboard missionplanning of autonomous spacecraft. This paper presents a novel self-adaptiveHermite interpolation technique for rapid satellite-to-site visibilitydetermination. Piecewise cubic curves are utilized to approximate the waveformof the visibility function versus time. The fourth-order derivative is used tocontrol the approximation error and to optimize the time step forinterpolation. The rise and set times are analytically obtained from the rootsof cubic polynomials. To further increase the computational speed, an intervalshrinking strategy is adopted via investigating the geometric relationshipbetween the ground viewing cone and the orbit trajectory. Simulation resultsshow a 98% decrease in computation time over the brute force method. The methodis suitable for all orbital types and analytical orbit propagators.

Rapid Satellite-to-Site Visibility Determination Based on Self-Adaptive Interpolation Technique