QIN Yishen,ZHOU Juan.Study of FLL-assisted PLL based on Adaptive Gain[J].Journal of Chengdu University of Information Technology,2025,40(05):605-612.[doi:10.16836/j.cnki.jcuit.2025.05.006]
基于自适应增益的锁频环辅助锁相环研究
- Title:
- Study of FLL-assisted PLL based on Adaptive Gain
- 文章编号:
- 2096-1618(2025)05-0605-08
- Keywords:
- carrier tracking; PLL; FLL; loop bandwidth; adaptive gain
- 分类号:
- TN911.8
- 文献标志码:
- A
- 摘要:
- 针对现有的全球导航卫星系统接收机中,固定增益的载波跟踪算法无法兼顾信号的高精度跟踪和收敛速度,提出自适应增益的载波跟踪算法。算法采用二阶锁频环(FLL)辅助三阶锁相环(PLL),在FLL的鉴频器和PLL的鉴相器之后串联一个自适应增益模块,设计自适应增益的数学模型,实现对环路增益的实时调整。通过一次和二次频率斜升信号的仿真验证,在保证信号高精度跟踪的同时,该算法比传统跟踪算法的收敛速度快1 s。
- Abstract:
- In the existing GNSS receivers,the fixed-gain carrier tracking algorithm cannot balance the high precision tracking of the signal and the convergence speed.To address this problem,an adaptive gain carrier tracking algorithm is proposed,which adopts a second-order frequency-locked loop(FLL)assisted by a third-order phase-locked loop(PLL),connects an adaptive gain module in series after the discriminator of the FLL and the phase-discriminator of the PLL,and designs the mathematical model of the adaptive gain,which allows real-time adjustments of the loop gain.Finally,through the simulation verification of primary and secondary frequency ramp signals,the algorithm converges 1 s faster than the traditional tracking algorithm while guaranteeing high-precision signal tracking.
参考文献/References:
[1] 陈玉君.高动态卫星信号跟踪技术研究[J]. 电子技术与软件工程,2021(16):79-80.
[2] Juang J,Chen Y.Phase/Frequency Tracking in a GNSS Software Receiver[J]. IEEE journal of selected topics in signal processing,2009,3(4):651-660.
[3] 高亢,侯孝民,赵强,等.采用锁频环和锁相环联合捕获的载波跟踪[J]. 电讯技术,2018,58(4):402-406.
[4] 刘卫,牟明会,顾明星,等.一种FLL辅助PLL的GNSS接收机矢量跟踪环路[J]. 现代电子技术,2022,45(15):1-5.
[5] 富立,王淼,王玲玲.高动态GPS载波锁相环切换稳定性分析[J]. 航空学报,2013,34(11):2572-2579.
[6] 牟伟清,刘荣科,宋青平,等.基于带宽优化的载波跟踪算法[J]. 北京航空航天大学学报,2015,41(10):1918-1924.
[7] Cheng Y,Zhang S,Wang X,et al.Kalman Filter with Adaptive Covariance Estimation for Carrier Tracking under Weak Signals and Dynamic Conditions[J]. Electronics,2024,13(7):1288.
[8] Yan C,Qing C.A Carrier Tracking Loop Using Adaptive Strong Tracking Kalman Filter in GNSS Receivers[J]. IEEE Communications Letters,2020,24(12):2903-2907.
[9] Yang W,Rong Y,T Y M.Kalman Filter-based Robust Closed-loop Carrier Tracking of Airborne GNSS Radio-Occultation Signals[J]. IEEE Transactions on Aerospace and Electronic Systems,2020,56(5):3384-3393.
[10] 程俊仁,刘光斌,张倩,等.MLE辅助PLL的高动态GPS载波跟踪[J]. 宇航学报,2015,36(1):103-108.
[11] Y CHENG,Q CHANG A.Coarse-to-Fine Adaptive Kalman Filter for Weak GNSS Signals Carrier Tracking.IEEE Communications Letters,2019(99):1.
[12] Fangxin L,Rui T,Ju H,et al.Combined positioning algorithm based on BeiDou navigation satellite system and raw 5G observations[J]. Measurement,2022,190(2):1-3.
[13] 谢钢.GPS原理与接收机设计[M]. 北京:电子工业出版社,2017.
[14] 吴华明,苏雁泳,刘爱军.锁相环与锁频环在数字Costas环中的应用[J]. 科学技术与工程,2010,10(19):4645-4650.
[15] 檀晓萌,罗瑞丹,徐颖,等.一种基于参数控制的低轨星载接收机载波跟踪算法[J]. 导航定位与授时,2022,9(1):58-67.
[16] Deng T,Ma M,Liu Q,et al.High-Precision Carrier Tracking Algorithm for Extremely Weak and High-Dynamic Signals[J]. Radio Science,2021,56(5):1-14.
[17] Luo Z,Ding J,Zhao L.Adaptive Gain Control Method of a Phase-Locked Loop for GNSS Carrier Signal Tracking[J]. International Journal of Antennas and Propagation,2018,2018(Pt.1):1-14.
[18] 张杰,马冠一.GNSS接收机锁相环最佳环路带宽的选取[J]. 电讯技术,2015,55(8):890-894.
[19] 聂少军,何兵哲.一种基于FLL和PLL的复合载波环的跟踪精度分析[J]. 电子设计工程,2013,21(24):142-145.
[20] 张红斌,李彤彤,王晓君,等.基于带宽调整的两种混合载波跟踪环路研究[J]. 无线电工程,2023,53(10):2244-2250.
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备注/Memo
收稿日期:2024-05-31
通信作者:周娟.E-mail:zhoujuan@cuit.edu.cn