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Session B6: GNSS Applications in Space

Conceptual Development of Ground Based Augmentation System on the Moon Using a Swarm of Lunar Rovers
Danim Jung, Donguk Kim, and Euiho Kim, Hongik University
Date/Time: Friday, Sep. 20, 4:26 p.m.

The study introduces strategies of establishing a ground-based augmentation system (GBAS) on the moon using a swarm of lunar rovers and its performance analysis. GBAS enhances user positioning accuracy and integrity by employing multiple reference receivers to broadcast differential correction messages. However, accurately determining the coordinates of reference receivers presents a challenge, particularly in the absence of precise positioning methods on the Moon. In our proposed scheme for establishing a GBAS system on the moon, we address this challenge by employing cooperative positioning techniques using a swarm of lunar rovers with Lunar Navigation Satellite system (LNSS), terrestrial Global Navigation Satellite Systems (GNSS), and ultra-wideband (UWB) technology. Through this approach, we will show that the LNSS/GNSS reference receivers onboard lunar rovers can be determined at the decimeter level accuracy. We will further analyze the accuracy of GBAS differential corrections and assess the effective coverage area as well as user positioning accuracy based on the expected accuracy of reference receiver coordinates and LNSS/GNSS ranging error characteristics.



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