The Use of X-ray Pulsars for Intersatellite Relative Position Determination

【摘要】：A new method for intersatellite relative position determination using X-ray pulsars is presented.X-ray detectors and satellite Antennas used for X-ray photon receive and pulsar signal waveform launch or receive are set in both spacecrafts,one of which is in known position,such as GPS satellite,and used for location assistance,another of which can detect two arrivals of the same integrated pulse,whose time interval is used to calculate 1 the position relative to the GPS satellite.Unlike GPS,this approach aims at spacecraft navigation in interplanetary and interstellar space.And it is independent of pulse phase models,as a result it can provide some new information for correction of phase models used in X-ray pulsar-based navigation.The method for TOA phase model correction using the relative position is specified finally.