| Issue |
MATEC Web Conf.
Volume 139, 2017
2017 3rd International Conference on Mechanical, Electronic and Information Technology Engineering (ICMITE 2017)
|
|
|---|---|---|
| Article Number | 00051 | |
| Number of page(s) | 5 | |
| DOI | https://doi.org/10.1051/matecconf/201713900051 | |
| Published online | 05 December 2017 | |
Carrier tracking algorithm based on joint acquisition of frequency locked loop and phase locked loop
Department of Optical and Electronic Equipment, Aerospace Engineering University, Beijing, 101416, PR China
* Corresponding author: wouwouwou@126.com
Aiming at the problem of frequency step in the frequency lock loop (FLL) - phase lock loop (PLL) carrier tracking algorithm’s conversion state, presenting an improved algorithm: PLL and FLL joint acquisition to replace the single FLL acquires frequency, and deduce the loop state transition threshold. The simulation results show that the improved algorithm is more stable in the conversion process, and the loop performance is optimized. When the SNR is -10dB, and has the acceleration rate, the tracking loop does not have a frequency step at the time of conversion, achieving the design purpose.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
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