With the establishment of the Chinese space station, a series of space science missions will
be conducted in its vicinity. One of the extended tasks for the in-orbit service of space station …

Future lunar missions will require onboard, real-time position, velocity, and timing (PVT)
knowledge for surface users. This paper introduces accurate, real-time, and onboard PVT …

The key requirement of centimeter-level real-time kinematic (RTK) positioning using the
Global Positioning System (GPS) relies on the ability to fast and accurately determine the …

The PROBA-2 microsatellite of the European Space Agency (ESA) is equipped with a novel
single frequency global positioning system (GPS) receiver, which combines low resource …

We study the feasibility of a passive system for Positioning, Navigation, and Timing (PPNT)
in the cislunar environment. The signal structure and position estimation procedure are …

Global Navigation Satellite System (GNSS) typically use ranging signals to provide a global-
coverage solution for positioning, velocity and timing applications. An accurate and stable …

BACKGROUND A key issue in Global Navigation Satellite Systems (GNSS), including the
original Global Positioning System (GPS), is the isolation and estimation of the integer …

At the time of this writing, the Gravity Recovery And Interior Laboratory (GRAIL) has recently
completed its originally planned three-month primary science mission. This involved …

Orbits of objects in cislunar space are, in general, non-Keplerian due to the influence of the
Moon's gravity and cannot be generically parameterized by a simple set of characteristics …

The next global strategic priority in space missions is a stable access to the Moon. Over the
last few years several studies and discoveries have pushed the space agencies and …