X-ray pulsar-based navigation using pulse phase and Doppler frequency measurements
نویسندگان
چکیده
منابع مشابه
Experimental Validation of Pulse Phase Tracking for X-ray Pulsar Based Spacecraft Navigation
Pulsars are a form of variable celestial source that have shown to be usable as aids for autonomous, deep space navigation. Particulary those sources emitting in the X-ray band are ideal for navigation due to smaller detector sizes. In this paper X-ray photons arriving from a pulsar are modeled as a non-homogeneous Poisson process. The method of pulse phase tracking is then investigated as a te...
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The problem of relative position estimation between two spacecraft based on X-ray pulsar measurements is addressed. A mathematical model is developed for the pulsar’s intensity as observed at each spacecraft. The time of arrival (TOA) of photons is modeled as a Poisson point process, and the relevant probability density functions are provided. A solution to the relative navigation problem is su...
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We report OSSE observations of the bursting X-ray pulsar GRO J1744{28 made in December 1995 and January 1996 at hard X-ray energies > 35 keV. The pulse proole of the persistent (i.e. non-bursting) pulsar emission is t with a sinusoid in the energy range 35{90 keV. Residuals reveal a second harmonic amplitude of 3:0 0:5% of the fundamental. The distribution of time intervals between bursts measu...
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We report OSSE observations of the bursting X-ray pulsar GRO J1744{28 made in December 1995 and January 1996 at hard X-ray energies > 35 keV. The pulse pro le of the persistent (i.e. non-bursting) pulsar emission is t with a sinusoid in the energy range 35{90 keV. Residuals reveal a second harmonic amplitude of 3:0 0:5% of the fundamental. The distribution of time intervals between bursts measu...
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ژورنال
عنوان ژورنال: Science China Information Sciences
سال: 2015
ISSN: 1674-733X,1869-1919
DOI: 10.1007/s11432-015-5460-1