基于相位补偿的BPSK相参脉冲串信号多普勒频率变化率估计算法

李宏; 秦玉亮; 李彦鹏; 王宏强; 黎湘

doi:10.3724/SP.J.1146.2009.01364

基于相位补偿的BPSK相参脉冲串信号多普勒频率变化率估计算法

doi: 10.3724/SP.J.1146.2009.01364

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出版历程
- 收稿日期: 2009-10-22
- 修回日期: 2010-02-12
- 刊出日期: 2010-09-19

A Phase Compensation Based Algorithm for Doppler Frequency Rate Estimation from BPSK Coherent Pulse Train

摘要

摘要: 目标与观测平台之间径向加速度引起的接收信号多普勒频率变化率的精确估计对于高精度单站无源定位与跟踪具有重要意义。该文针对脉内相位调制信号的频率变化率不能直接表征多普勒频率变化率的问题，首先引入相位补偿的方法消除BPSK相位调制序列的影响，然后针对固定脉冲重复频率和脉冲重复频率抖动两种情况分别提出了径向加速度引起的多普勒频率变化率的精确估计方法，并且给出了多普勒频率变化率与采样频率、观测时间及脉冲重复频率之间的约束关系。仿真结果表明，典型参数条件下该文提出算法的信噪比门限比已有算法低约4~6 dB。
- 无源定位与跟踪 /
- BPSK脉冲压缩波形 /
- 相参脉冲串 /
- 多普勒频率变化率
Abstract: The precise passive locating and tracking technology for a single observer demands high accuracy estimation of Doppler frequency rate produced by the radial acceleration between the target and the observer from the received signals. The frequency rate cannot denote the Doppler frequency rate for the PSK signal. A phase compensation based algorithm for Doppler frequency rate estimation from BPSK coherent pulse train is presented to conquer the problem. Both the fixed and alterable pulse repetition frequency (PRF) cases are considered. The limitation between the Doppler frequency rate and the sampling frequency, the observing time and the PRF is given. The simulation results show that the proposed algorithm achieves a 4~6 dB lower SNR threshold than the known ones in the typical condition.
- Passive locating and tracking /
- BPSK compression waveform /
- Coherent pulse train /
- Doppler frequency rate

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参考文献(1)

冯道旺. 利用径向加速度信息的单站无源定位技术研究[D]. 长沙: 国防科技学技术大学电子科学与工程学院, 2003.[2]冯道旺, 周一宇, 李宗华. 相参脉冲序列多普勒变化率的一种快速高精度测量方法[J].信号处理.2004, 20(1):40-43Feng Dao-wang, Zhou Yi-yu, and Li Zong-hua. A fast and accurate estimator for Doppler rate-of-change with the coherent pulse train[J]. Signal Processing, 2004, 20(1): 40-43.[3]郁春来, 占荣辉, 万建伟. 一种BPSK相参脉冲信号多普勒频率变化率测量方法[J].国防科技大学学报.2008, 30(1):53-56Yu Chun-lai, Zhan Rong-hui, and Wan Jian-wei. A measurement algorithm for Doppler frequency rate-of-change with BPSK coherent pulse signal[J]. Journal of National University of Defense Technology, 2008, 30(1): 53-56(82).[4]郁春来, 万建伟, 占荣辉. 一种PCM相参脉冲序列多普勒频率变化率估计算法[J]. 电子与信息学报. 2008, 30(10): 2303-2306.[5]Yu Chun-lai, Wan Jian-wei, and Zhan Rong-hui. An estimation algorithm for Doppler frequency rate-of-change with PCM coherent pulse train[J]. Journal of Electronics [6]Information Technology, 2008, 30(10): 2303-2306.郁春来. 利用空频域信息的单站无源定位与跟踪关键技术研究[D]. 长沙: 国防科技学技术大学电子科学与工程学院, 2008.Nguyen V K. Frequency estimation of a radar pulse train with an unknown binary phase-coded sequence[C]. Proceedings of the 2008 International Conference on Radar, Adelaide, Australia, 2008: 271-275.[7]Tretter S A. Estimating the frequency of a noisy sinusoid by linear regression[J]. IEEE Transactions on Information Theory, 1985, 32(6): 832-835.[8]苑小华, 罗武忠, 罗来源. MPSK信号载波频率盲估计[J].电子与信息学报.2008, 30(5):1148-1150浏览Yuan Xiao-hua, Luo Wu-zhong, and Luo Lai-yuan. Blind carrier frequency estimation for MPSK Signal[J].Journal of Electronics Information Technology.2008, 30(5):1148-1150[9]H?ndel P and Tichavsk? P. Frequency rate estimation at high SNR[J].IEEE Transactions on Signal Processing.1997, 45(8):2101-2105[10]Levanon N and Mozeson E. Radar Signals[M]. Hoboken.[J].New Jersey: JOHN WILEY SONS, INC.2004,:-

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