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The study aims to improve real-time precise orbit determination for Low Earth Orbit satellites using a cooperative framework.

January 22, 2026Remote SensingOpen Access

GRACE-FO Real-Time Precise Orbit Determination Using Onboard GPS and Inter-Satellite Ranging Measurements with Quality Control Strategy

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The study aims to improve real-time precise orbit determination for Low Earth Orbit satellites using a cooperative framework.
Developed a framework that fuses GNSS and inter-satellite link measurements.
Implemented an iterative Detection, Identification, and Adaptation quality control algorithm.
Conducted validation using Centre National d’Etudes Spatiales real-time products.
GRACE-D satellite demonstrated a 39% improvement in mean orbit accuracy.
Average convergence time for GRACE-D reduced by 44.3%.
GRACE-C showed a 4.2% enhancement in accuracy and 1.3% decrease in convergence time.

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Real-Time Precise Orbit Determination improves accuracy and stability in LEO satellites, indicating a robust method for future satellite formations.

Zhong et al. (2026) studied this question.

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Real-Time Precise Orbit Determination improves accuracy and stability in LEO satellites, indicating a robust method for future satellite formations.