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Front. Inform. Technol. Electron. Eng.  2013, Vol. 14 Issue (2): 133-142    DOI: 10.1631/jzus.C12a0142
    
Determination of inter-satellite relative position using X-ray pulsars
Da-jun Feng, Lu-ping Xu, Hua Zhang, Shi-bin Song
School of Electronic Engineering, Xidian University, Xi'an 710071, China; Institute of Astronautics and Aeronautics, Xidian University, Xi'an 710071, China
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Abstract  Pulsars are rapidly rotating neutron stars that generate pulsed electromagnetic radiation. A new method for inter-satellite relative position determination between a global navigation satellite system (GNSS) and spacecraft using X-ray pulsars is proposed in this paper. The geometric model of this method is formulated, and two different resolution algorithms are introduced and analyzed. The phase cycle ambiguity resolution is investigated, and a new strategy is proposed and formulated. Using the direct vector parameters of the pulsar, geometric dilution of precision (GDOP) is studied. It is shown that this method has advantages of simplicity and efficiency, and is able to eliminate the clock errors. The analytical results are verified numerically via computer simulations.

Key words： Pulsar navigation      Position determination      Phase cycle ambiguity      Geometric dilution of precision (GDOP)     
Received: 09 June 2012      Published: 31 January 2013
CLC:  V448.21  
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Da-jun Feng
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Da-jun Feng, Lu-ping Xu, Hua Zhang, Shi-bin Song. Determination of inter-satellite relative position using X-ray pulsars. Front. Inform. Technol. Electron. Eng., 2013, 14(2): 133-142.

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http://www.zjujournals.com/xueshu/fitee/10.1631/jzus.C12a0142     OR     http://www.zjujournals.com/xueshu/fitee/Y2013/V14/I2/133


Determination of inter-satellite relative position using X-ray pulsars

Pulsars are rapidly rotating neutron stars that generate pulsed electromagnetic radiation. A new method for inter-satellite relative position determination between a global navigation satellite system (GNSS) and spacecraft using X-ray pulsars is proposed in this paper. The geometric model of this method is formulated, and two different resolution algorithms are introduced and analyzed. The phase cycle ambiguity resolution is investigated, and a new strategy is proposed and formulated. Using the direct vector parameters of the pulsar, geometric dilution of precision (GDOP) is studied. It is shown that this method has advantages of simplicity and efficiency, and is able to eliminate the clock errors. The analytical results are verified numerically via computer simulations.

关键词： Pulsar navigation,  Position determination,  Phase cycle ambiguity,  Geometric dilution of precision (GDOP) 
[1] Li-rong Shen, Xiao-ping Li, Hai-feng Sun, Hai-yan Fang, Meng-fan Xue. A novel period estimation method for X-ray pulsars based on frequency subdivision[J]. Front. Inform. Technol. Electron. Eng., 2015, 16(10): 858-870.