| A Carrier Synchronization Algorithm for Autonomous Radio Receiver in Deep Space |
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| 作者姓名： | SONG Qingping LIU Rongke |
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| 作者单位： | School of Electronic and Information Engineering, Beihang University, Beijing 100191 |
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| 基金项目： | Supported by Program for New Century Excellent Talents in University (NCET-12-0030), and National Natural Science Foundation of China (91438116) |
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| 摘 要： | The carrier synchronization algorithm of the autonomous radio for deep space is studied. When the signal modulation is unknown, this paper improves the existing universal carrier synchronization loop for multiple modulations, expands the frequency tracking range of the loop, proposes a Tong detection-based M-ary Phase Shift Keying (M-PSK) signal locking detection algorithm to rapidly and effectively determine whether the current phase discrimination mode matches the modulation mode, so as to independently choose whether to switch the phase discrimination mode. Through theoretical analysis and comparison, it is described that the total detection probability of the algorithm proposed in this paper is significantly higher than the probability of single lock detection. Simulation results show that the algorithm has high detection probability and low computational complexity at a low signal to noise ratio.
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| 关 键 词： | Deep space communication Autonomous radio Carrier synchronization Detection strategy Detection probability |
| 收稿时间： | 2014-09-20 |
| 修稿时间： | 2015-03-04 |
A Carrier Synchronization Algorithm for Autonomous Radio Receiver in Deep Space |
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| SONG Qingping,LIU Rongke.A Carrier Synchronization Algorithm for Autonomous Radio Receiver in Deep Space[J].Chinese Journal of Space Science,2015,35(3):343-349. |
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| Authors: | SONG Qingping LIU Rongke |
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| Institution: | School of Electronic and Information Engineering, Beihang University, Beijing 100191 |
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| Abstract: | The carrier synchronization algorithm of the autonomous radio for deep space is studied.When the signal modulation is unknown,this paper improves the existing universal carrier synchronization loop for multiple modulations,expands the frequency tracking range of the loop,proposes a Tong detection-based M-ary Phase Shift Keying(M-PSK)signal locking detection algorithm to rapidly and effectively determine whether the current phase discrimination mode matches the modulation mode,so as to independently choose whether to switch the phase discrimination mode.Through theoretical analysis and comparison,it is described that the total detection probability of the algorithm proposed in this paper is significantly higher than the probability of single lock detection.Simulation results show that the algorithm has high detection probabiUty and low computational complexity at a low signal to noise ratio. |
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| Keywords: | Deep space communication Autonomous radio Carrier synchronization Detection strategy Detection probability |
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