Research On Deep Space Navigation Based On Astronomical High Energy Radiation

Deep spacecraft autonomous navigation is a key technology in space missions between spacecraft,such as autonomous rendezvous and docking,collaborative communication and formation flight.At present,the more mature navigation system needs the support and support of the ground facilities,which has the disadvantages of weak nature,poor anti-interference ability and unsuitable deep space.There are abundant high-energy ray resources in deep space with high-stability X-ray pulsars and gamma-ray bursts(Gamma-ray Burst,GRB)with higher signal-to-noise ratios and more definite morphological characteristics).Combined with astronomical high-energy ray resources,spacecraft approximation of the vacuum flight environment,consider the direct use of astronomical high-energy ray signals without the need for atmospheric feedback to the ground for direct navigation,so the study based on astronomical high-energy ray deep-space navigation feasibility and performance analysis of great significance.In this paper,by analyzing the physical mechanism and characteristics of X-ray pulsar and gamma-ray bursts,the Kalman filter is used to analyze the X-ray pulsar navigation system and Gamma-ray source Localization-Induced Navigation and Timing system(GLINT),according to the characteristics of two kinds of high-energy radiation,from different angles to improve the accuracy of spacecraft autonomous navigation,with the relevant spacecraft mission,defined for navigation use pulsar selection criteria,the gamma ray The optical data processing of the storm leads to the GLINT navigation algorithm.The simulation results show that the Kalman filter is based on two different high-energy ray navigation systems.Compared with the performance of different navigation methods,the feasibility and superiority of navigation based on high-energy ray in deep space environment are obtained,and different conditions Under the navigation of the X-ray pulsar selection program,and GLINT with NASA deep space network under the high-precision options.Suggested that in the deep space autonomous navigation,different navigation schemes can be selected by selecting the number of X-ray pulsars,selecting the pulsars with different distributions,and increasing the sampling rate of GLINT.