A Phase Delay Estimation Algorithm of Frequency Hopping Signal Based on Chinese Reminder Theorem

ZHAO Peiyan; OUYANG Xinxin; PENG Huafeng

doi:10.11999/JEIT170544

Volume 40 Issue 3

Mar. 2018

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Article Navigation > Journal of Electronics & Information Technology > 2018 > 40(3): 656-662

ZHAO Peiyan, OUYANG Xinxin, PENG Huafeng. A Phase Delay Estimation Algorithm of Frequency Hopping Signal Based on Chinese Reminder Theorem[J]. Journal of Electronics & Information Technology, 2018, 40(3): 656-662. doi: 10.11999/JEIT170544

Citation:

ZHAO Peiyan, OUYANG Xinxin, PENG Huafeng. A Phase Delay Estimation Algorithm of Frequency Hopping Signal Based on Chinese Reminder Theorem[J]. Journal of Electronics & Information Technology, 2018, 40(3): 656-662. doi: 10.11999/JEIT170544

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A Phase Delay Estimation Algorithm of Frequency Hopping Signal Based on Chinese Reminder Theorem

doi: 10.11999/JEIT170544

1.
(National Key Laboratory of Science and Technology on Blind Signal Processing, Chengdu 610041, China)
2.

Received Date: 2017-06-07
Rev Recd Date: 2017-11-03
Publish Date: 2018-03-19

Abstract

Abstract

The bandwidth of each hop in frequency hopping signal is very narrow, and the accumulating between multiple hop is difficult, thus the accuracy of time delay estimation for frequency hopping is low. To deal with the problem, the potential of wide band hopping of frequency hopping signal is fully exploited. A multi-frequency phase delay estimation model is established, and the problem of time delay estimation is transformed into ambiguity resolution. Then, Chinese Remainder Theorem (CRT) is used to solve the ambiguity, but in the non-cooperation scene the module can not be chosen easily, thus an extrapolation method for interferometric phase based on virtual frequency is proposed to relax the constraint of module selection. Finally, the closed-form Robust Chinese Remainder Theorem (RCRT) is used to solve the ambiguity, and the phase delay is obtained with high accuracy. Compared with the conventional algorithm, the proposed algorithm has the advantages of high precision, low computation complexity and independence on the propagation characteristics of the channel. The simulation results verify the validity and correctness of the proposed model and algorithm.
- Phase delay,
- Frequency hopping signal,
- Interferometric phase,
- Chinese Remainder Theorem (CRT),
- Virtual frequency

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References

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