… algorithm that adapts to the challenging lunar environment with weak gravity and strong third…
of a lunar satellite in an elliptical lunar frozen orbit and quasi-frozen low lunar orbit, wherein …

… the HLS docked to the lunar gateway orbiting around the moon … addressed for accomplishing
the lunar exploration mission, … quality of the pseudo range and carrier phase. Following this …

… lunar missions. We propose a relative positioning and timekeeping technique in lunar orbit
that leverages differential carrier phase … However, using GPS signals in the lunar orbit is …

… lunar rover using same-beam VLBI observations. The analysis indicated that the differential
phase delay between the lunar … plane-of-sky between the lunar rover and the lander, with an …

… So, recovering the carrier Doppler phase is the first key step in the adaptive phase recovery
… After carrier phase tracking and phasor stopping of each DOR tone at each station, the …

… during Lunar Transfer and Lunar orbit phase. SMART-1 tracking data obtained during
selective periods were used to determine orbit solutions and to compare with orbit solutions …

… in our lab, specifically for lunar missions. In The Orbital Filter section, we describe the design
and implementation of our GPS-based orbital filter for lunar missions, which is based on an …

… on stable lunar orbits by using the analytical theory derived by Nie and Gurfil [6] for frozen
orbits … phase measurements, similarly to the way GPS works, but we make no assumptions in …

… includes 4 orbital phases: the Earth high eccentric parking orbit, trans-lunar orbit, Lissajous
… The carrier phase data processing is underway and the relevant results are not analyzed in …

… (f) The orbit and the return unit dock in the lunar orbit The differential phase delay can be
obtained with a high accuracy of 1 mm level by using the same-beam VLBI observation among …