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DOE OSTI · 1880471

Improving SGP4 Orbit Determination with New State Estimation Algorithm

Jansens, Rowan Philip
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Abstract

The Simplified General Perturbations 4 Model (SGP4) is a well-known tool for performing satellite orbit determination. However, uncertainties and inaccuracies in the initial state inputs (required by SGP4) degrade the performance of the propagator. We present a new state estimation algorithm that allows for independent computation of these initial inputs using Unscented Kalman Filtering and GPS data from a satellite. The algorithm is tested on real flight data and demonstrates a notable performance improvement over the standard method of orbit determination using SGP4.

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97 MATHEMATICS AND COMPUTINGOrbit DeterminationSGP4UKFUnscented Kalman Filter

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Jansens, Rowan Philip. 2022-08-09. Improving SGP4 Orbit Determination with New State Estimation Algorithm. https://doi.org/10.2172/1880471

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