基于循环平稳特性的BPSK信号角跟踪方法  

Angle Tracking Method Based on BPSK Signal Cycle Stable Characteristic

作　　者：宋晓瑞 郑海昕 

机构地区：[1]装备学院研究生管理大队,北京101416 [2]装备学院光电装备系,北京101416

出　　处：《科学技术与工程》2016年第27期194-198,218,共6页Science Technology and Engineering

摘　　要：针对测控数传一体化体制中低信噪比条件下的BPSK信号角跟踪问题,提出了基于BPSK信号循环平稳特性的角跟踪方法。通过对谱相关理论的深入分析,引入旋转系数这一概念,通过计算量相对较小的方法对和差通道信号进行处理,进而估计角误差值,完成角跟踪。仿真结果表明,理想高斯白噪声背景下,和差通道相关噪声为噪声总功率0.1倍时,该方法的角误差值估计门限可低至2 d B。A angle tracking method based on BPSK signal is proposed for the angle tracking problem of BPSK signal under low SNR condition in TTC and Communication unified design system.Based on the deep analysis of the spectral correlation theory,the concept of the rotation coefficient is introduced.The sum and difference channels signals are processed by means of less calculation,and then the angle error is estimated,the angle tracking is completed.The simulation results show that,under the ideal Gauss white noise background,when the correlation noise of the sum and difference channels is 0.1 times of the total power of the noise,and the estimation threshold of the proposed method can be as low as 2 d B.

关 键 词：低信噪比 相关噪声 BPSK信号 角跟踪 信噪比门限 

分 类 号：TN927.2[电子电信—通信与信息系统]