Abstract: The term XNAV (X-ray navigation) is used to describe a variety of means of using celestial X-ray source observations for spacecraft attitude, position, velocity, and time determination. Several classes of source observations can be utilized for different...
Abstract: The concept of utilizing pulsars for spacecraft navigation has been in development since the discovery of these rapidly rotating neutron stars in the 1960’s [1]. The Jet Propulsion Laboratory (JPL) conducted studies in the 70’s and 80’s proposing the use of...