一种BPSK相参脉冲信号多普勒频率变化率测量方法  

A Measurement Algorithm for Doppler Frequency Rate-of-change with BPSK Coherent Pulse Signal

作　　者：郁春来[1] 占荣辉[1] 万建伟[1] 

机构地区：[1]国防科技大学电子科学与工程学院,湖南长沙410073

出　　处：《国防科技大学学报》2008年第1期53-56,82,共5页Journal of National University of Defense Technology

摘　　要：BPSK信号广泛应用于新体制雷达中,测量BPSK信号中包含的多普勒频率变化率信息是单站无源定位与跟踪的关键技术。通过对BPSK信号平方消除了相位调制对参数估计的影响,并利用离散傅立叶变换进行脉冲间相参积累,算法具有计算量小、多普勒频率变化率估计精度高的优点。计算机仿真结果表明参数估计的精度能达到单站无源定位与跟踪系统的精度要求。BPSK signal tins been widely applied in new radar systems. The obtainment of Doppler frequency rate-of-change from BPSK coherent pulse signal is a key technology in the passive locating and tracking system of single observation. The influence of phase modulation is dismissed by square method and DFT （Discrete Fourier Transform） is used to realize the coherent integration between the pulses. This algorithm has small computation and high estimation precision of Doppler frequency rata-of-change. The computer simulation results show that the precision of parameter estimation meets the needs for passive locating and tracking system of single observer.

关 键 词：BPSK相参脉冲信号 多普勒频率变化率 单站无源定位与跟踪 

分 类 号：TN958.94[电子电信—信号与信息处理]