一种用于脉冲星信号去噪的新方法

doi:10.3969/j.issn.1001-2400.2010.06.014

Abstract

Abstract:

In order to improve the signal-to-noise ratio(SNR) of the pulsar signal, this paper proposes a denoising algorithm based on bispectrum reconstruction for the pulsar signal. First, the noisy pulsar signal is transformed into the bispectral domain. The bispectrum phase and amplitude are filtered by the α-trimmed filter. Then, the power spectrum and phase of the pulsar signal can be recovered from the filtered bispectrum. Results indicate that this method can eliminate noise in the pulsar signals, and improve the SNR notably.

Key words: pulsar, α-trimmed filter, bispectrum reconstruction, signal processing

SUN Jing-rong;XU Lu-ping;WANG Ting. New denoising method for pulsar signal[J].J4, 2010, 37(6): 1059-1064.

References

[1] 倪广仁, 杨廷高, 柯熙政, 等. 毫秒脉冲星计时的方法和发展研究[J]. 西安电子科技大学学报,2000,27(6):781-785.
Ni Guangren, Yang Tinggao, Ke Xizheng, et al. A Research on the Timing Method and the Development of Millisecond Pulsars[J].Journal of Xidian University, 2000,27(6):781-785.
[2] 柯熙政, 汪丽, 倪广仁. 改进的小波阈值消噪法应用于脉冲星弱信号处理[J]. 西安理工大学学报, 2008,24(1):18-21.
Ke Xizheng, Wang Li, Ni Guangren. Application of Improved Threshold Denoising Based on Wavelet Transform to Pulsar Signal Processing[J]. Journal of Xi'an University of Technology, 2008, 24(1):18-21.
[3] 阎迪, 许录平, 谢振华. 脉冲星信号的模糊阈值小波降噪算法[J]. 西安交通大学学报,2007, 41(10): 1193-1196.
Yan Di, Xu Luping, Xie Zhenhua. Wavelet Denoising Algorithm Based on Fuzzy Threshold for Pulsar Signal[J].Journal of Xi'an Jiaotong University,2007,41(10):1193-1196.
[4] 姬红兵, 高新波, 谢维信. 雷达目标双谱特征分析与分类方法研究[J]. 西安电子科技大学学报,1999,26(6):691-699.
Ji Hongbing, Gao Xinbo, Xie Weixin. Study of Bispectrum Signatures of Radar Targets and Classification Techniques[J].Journal of Xidian University,1999,26(6):691-699.
[5] 周明月, 杜丽敏, 姜文龙. 基于高阶统计量的小波变换去噪算法[J]. 长春理工大学学报(自然科学版),2009,32(2):251-253.
Zhou Mingyue, Du Limin, Jiang Wenlong. HOS-based Wavelet Denoising Algorithm[J].Journal of Changchun University of Science and Technology (Natural Science Edition),2009,32(2):251-253.
[6] 谢振华,许录平,倪广仁. 基于双谱的脉冲星累积脉冲轮廓时间延迟测量[J]. 物理学报,2008,57(10):6683-6688.
Xie Zhenhua, Xu Luping, Ni Guangren. Time Offset Measurement Algorithm Based on Bispectrum for Pulsar Integrated Pulse Profiles[J]. Acta Physica Sinica,2008,57(10):6683-6688.
[7] 刘劲, 马杰, 田金文. 基于小波和双谱的脉冲星信号识别[J]. 信息与控制,2009,38(2):249-252.
Liu Jin, Ma Jie, Tian Jinwen. Pulsar Signal Recognition Based on Wavelet and Bispectra[J].Information and Control, 2009,38(2):249-252.
[8] Lukin V, Totsky A, Kurekin A, et al. Signal Waveform Reconstruction from Noisy Bispectrum Estimations Pre-processed by Vector Filters[C]//Proceedings of the Seventh International Symp on Signal Processing and Its Applications. Paris: IEEE, 2003: 169-172.
[9] 张贤达. 时间序列分析——高阶统计量方法[M]. 北京: 清华大学出版社,1996.
[10] Bartelt H,Lohman A W,Wirnitzer B. Phase and Amplitude Recovery from Bispectra[J]. Applied Optics, 1984, 72(10): 3121-3129.

[1]	TAO Yi,DING Li. Method for digital IQ frequency-domain calibration based on conjugate symmetry [J]. Journal of Xidian University, 2021, 48(2): 181-189.
[2]	YANG Jie,JIANG Junzheng. Method for data recovery in the sensor network based on the joint graph model [J]. Journal of Xidian University, 2020, 47(1): 44-51.
[3]	XIAO Song, CHEN Hui, NI Mengyu, NI Liuliu, ZHANG Jiajia. Algorithm for near-field source localization using the minimum redundant symmetric array [J]. Journal of Xidian University, 2018, 45(6): 123-129.
[4]	GONG Jian;LOU Shuntian;ZHANG Weitao. Method of array antenna DOA under strong interference presence [J]. Journal of Xidian University, 2018, 45(1): 168-172.
[5]	LIAO Ruiqian;XU Jingwei;LIAO Guisheng. Robust adaptive beamforming with near-field scatterers [J]. Journal of Xidian University, 2017, 44(5): 184-188.
[6]	YAO Yafeng;FENG Zhongxiu;CHEN Zhao. Ultra-low latency and omit-iteration CORDIC algorithm [J]. Journal of Xidian University, 2017, 44(4): 162-166.
[7]	XUE Mengfan;LI Xiaoping;FANG Haiyan;SUN Haifeng;SHEN Lirong. Influence of the pulsar direction error and geometry distribution on spacecraft relative navigation [J]. Journal of Xidian University, 2017, 44(1): 89-93.
[8]	JIANG Ruomei;SHE Yan. Method of time delay measurement based on fast maximum likelihood for pulsar pulse profile [J]. Journal of Xidian University, 2016, 43(5): 147-152.
[9]	SHEN Lirong;LI Xiaoping;LIU Yanming;FANG Haiyan;SUN Haifeng;PEI Chenxing. Simulation of X-ray pulsar signals with multiphysical properties [J]. Journal of Xidian University, 2016, 43(5): 183-189.
[10]	ZHOU Hang;CAI Zhiming;WANG Ximin. Implementation and optimization of the wideband matched filter on the GPU [J]. J4, 2015, 42(3): 135-140+191.
[11]	YANG Dong;LIAO Guisheng;ZHU Shengqi;WANG Kai. Improved low-rank recovery method for sparsely sampling data in array signal processing [J]. J4, 2014, 41(5): 30-35.
[12]	TIAN Yuling. Dendritic cell algorithm for time series oriented anomaly detection [J]. J4, 2014, 41(4): 144-150.
[13]	ZHAO Baowei;XIANGLI Bin;Lü Qunbo;ZHANG Guifeng;ZENG Xiaoru;GUO Wenji. Parallel RX algorithm implementation based on the FPGA and multi-DSP system [J]. J4, 2014, 41(3): 152-156.
[14]	WANG Ling;LIU Jianqiang;LI Guolin;ZHANG Zhen;YANG Jikun. Joint calibration algorithm in the presence of mutual coupling and channel discord via rotational invariance techniques [J]. J4, 2014, 41(1): 182-188.
[15]	FENG Dajun;XU Luping;SONG Shibin;TIAN Xi. Differential co-localization method using the X-ray pulsar [J]. J4, 2014, 41(1): 81-86.

New denoising method for pulsar signal

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0