基于卡尔曼滤波的伪码跟踪环路  

A novel pseudocode tracking loop based on Kalman filter

作　　者：史志鹏 赵烈海 SHI Zhipeng;ZHAO Liehai(College of Telecommunications&Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,江苏南京210003

出　　处：《无线通信技术》2024年第2期54-58,共5页Wireless Communication Technology

摘　　要：针对航天器现有码跟踪环信在低噪比条件下跟踪性能差的问题,提出了一种基于卡尔曼滤波的新型码跟踪环结构,分析了环路的信号处理流程。该结构能实现环路较快入锁且改善了低信噪比条件下环路的跟踪性能,仿真进一步验证了该方法的有效性。在对鲁棒性要求较高的深空测控通信中具有较大的应用价值。A new tracking loop structure based on the Kalman Filter has been proposed to address the issue of poor tracking performance of existing chip tracking loop in low signal-to-noise ratio(SNR)conditions for spacecraft,and the signal processing flow of the loop is analyzed.This struc⁃ture enables faster loop acquisition and improves tracking performance in low SNR conditions.Simulation results further validate the effectiveness of this approach.It holds significant value for applications in deep space tracking and communication systems where robustness is a critical re⁃quirement.

关 键 词：伪码 码跟踪环 卡尔曼滤波 跟踪性能 

分 类 号：TN911.7[电子电信—通信与信息系统]