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- W2002183883 abstract "As interplanetary missions are increasingly complex, the existing unique mature interplanetary navigation methodmainly based on radiometric tracking techniques of Deep Space Network can not meet the rising demands ofautonomous real-time navigation. This paper studied the applications for interplanetary flights of a new navigationtechnology under rapid development-the X-ray pulsar-based navigation for spacecraft (XPNAV), and valued itsperformance with a computer simulation. The XPNAV is an excellent autonomous real-time navigation method, and canprovide comprehensive navigation information, including position, velocity, attitude, attitude rate and time. In the paperthe fundamental principles and time transformation of the XPNAV were analyzed, and then the Delta-correction XPNAVblending the vehicles' trajectory dynamics with the pulse time-of-arrival differences at nominal and estimated spacecraftlocations within an Unscented Kalman Filter (UKF) was discussed with a background mission of Mars Pathfinder duringthe heliocentric transferring orbit. The XPNAV has an intractable problem of integer pulse phase cycle ambiguitiessimilar to the GPS carrier phase navigation. This article innovatively proposed the non-ambiguity assumption approachbased on an analysis of the search space array method to resolve pulse phase cycle ambiguities between the nominalposition and estimated position of the spacecraft. The simulation results show that the search space array method arecomputationally intensive and require long processing time when the position errors are large, and the non-ambiguityassumption method can solve ambiguity problem quickly and reliably. It is deemed that autonomous real-time integratednavigation system of the XPNAV blending with DSN, celestial navigation, inertial navigation and so on will be thedevelopment direction of interplanetary flight navigation system in the future." @default.
- W2002183883 created "2016-06-24" @default.
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- W2002183883 date "2009-07-03" @default.
- W2002183883 modified "2023-09-23" @default.
- W2002183883 title "The use of x-ray pulsar-based navigation method for interplanetary flight" @default.
- W2002183883 doi "https://doi.org/10.1117/12.835493" @default.
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