Analysis of GNSS data at the Moon for the LuGRE project

Aided Kalman Filter Models for GNSS-Based Space Navigation

“…To assess the proposed TA-EKF architectures, a 15-minutes long orbital section is selected in a neighborhood of a point belonging to the planned LuGRE trajectory at a distance of 25.05 RE (i.e., 159 768.9 km); the selected distance is relevant to the mission scientific objectives [24]. In order to gather significant accuracy statistics to characterize the filtered navigation solution, a sample of 10 3 MC realizations is collected of the aforementioned orbital segment.…”

“…The LuGRE GNSS receiver is not expected to interface with the spacecraft GNC subsystem while only relying on GNSS observables and aiding data (i.e., GNSS ephemeris and planned spacecraft trajectory) provided from its ground segment. Among the driving scientific investigations identified to respond to the LuGRE objectives, it is considered the performance assessment of filtering-based PNT solutions obtained both onboard throughout the mission and via groundbased post-processing of the multi-GNSS observables collected throughout MTO up to Moon altitudes (i.e., about 62 RE) [24]- [26].…”

Flexible Metasignal Tracking: Architecture Robustness in Challenging PNT Scenarios

“…IN addition to earth-based navigation, positioning, navigation, and timing (PNT) services are already exploited in a plethora of applications [1]. Among these, precision agriculture [2], vehicle and inter-personal ranging [3], [4], [5], communication networks [6], or space applications [7], [8], [9], to name a few. However, as the range of applications expands, providing an adequate PNT service is becoming more challenging and, nevertheless, an increasing number of current and envisioned applications demands a precise and reliable PNT system [1].…”