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Carrier Acquisition and Tracking by a COSTAS Loop with Automatic Frequency Control

机译：具有自动频率控制的COsTas环路的载波采集和跟踪

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Signal reconstruction for demodulation from the BPSK-modulated suppressed carrier by COSTAS demodulation is discussed. For heavily faded mobile communications such as satellite-aided mobile communication, carrier acquisition lasts too long for most applications, and for a large frequency uncertainty range, false carrier locking leads to an erroneous demodulation. Both disadvantages can be avoided by an automatic frequency control (AFC) inserted into the COSTAS loop. The AFC characteristics for BPSK-modulated NRZ signals, and the corresponding acquisition times, are derived for passive low pass filters. The signal tracking of the composite COSTAS/AFC loop is analyzed.

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作者
Messerschmid, E.;
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年度 1984
页码 p.1-59
总页数 59
原文格式 PDF
正文语种 eng
中图分类工业技术;
关键词
Automatic frequency control; Carrier frequencies; Demodulation; Signal processing; Low pass filters; Phase shift keying; Signal analysis; Spacecraft communication;

机译：自动频率控制;载波频率;解调;信号处理;低通滤波器;相移键控;信号分析;航天器通信;

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专利

1. Carrier tracking algorithm based on joint acquisition of frequency locked loop and phase locked loop [J] . Kang Gao, Qiang Zhao, BaoTong Peng MATEC Web of Conferences . 2017,第1期

机译：基于频率锁定环和锁相环联合采集的载波跟踪算法
2. FPGA-Based Implementation of All-Digital QPSK Carrier Recovery Loop Combining Costas Loop and Maximum Likelihood Frequency Estimator [J] . Kaiyu Wang, Zhiming Song, Xianwei Qi, International journal of reconfigurable computing . 2014,第期

机译：基于FPGA的全数字QPSK载波恢复环路的实现，结合了Costas环路和最大似然频率估计器
3. FPGA-Based Implementation of All-Digital QPSK Carrier Recovery Loop Combining Costas Loop and Maximum Likelihood Frequency Estimator [J] . Wang Kaiyu, Song Zhiming, Qi Xianwei, International journal of reconfigurable computing . 2014,第2期

机译：基于FPGA的全数字QPSK载波恢复环路的组合，结合了Costas环路和最大似然频率估计器
4. A high order composite automatic frequency control Costas loop for synchronization [C] . Zhihui Shu, Dan Shen, Gang Wang, IEEE Aerospace Conference . 2017

机译：用于同步的高阶复合自动频率控制Costas回路
5. A FREQUENCY ACQUISITION LOOP FOR CARRIER RECOVERY (FAL, I-Q DEMODULATOR, COSTAS, PLL, DFC). [D] . OH, TAE WON. 1986

机译：载波恢复的频率获取环（FAL，I-Q解调器，COSTAS，PLL，DFC）。
6. A Two-Stage Kalman Filter-Based Carrier Tracking Loop for Weak GNSS Signals [O] . Yan Cheng, Qing Chang, Hao Wang, 2019

机译：基于两阶段卡尔曼滤波器的GNSS弱信号载波跟踪环路
7. Joint Carrier Synchronization Algorithm by Open-Loop Acquisition and Closed-Loop Tracking in High-Dynamic Environments [O] . Chunlei Han, Yingyu Bai, Jiangbo Si 2018

机译：通过高动态环境开环采集和闭环跟踪的联合载波同步算法
8. Carrier Acquisition and Tracking by a Costas-Loop with Automatic Frequency Control [R] . Messerschmid, E. 1983

机译：采用自动频率控制的Costas环路进行载波采集和跟踪

Carrier Acquisition and Tracking by a COSTAS Loop with Automatic Frequency Control

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