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基于載波域自適應(yīng)迭代濾波器的無源雷達(dá)多徑雜波抑制方法

趙志欣,  周新華,  洪升,  翁濤,  王玉皞

趙志欣, 周新華, 洪升, 翁濤, 王玉皞. 基于載波域自適應(yīng)迭代濾波器的無源雷達(dá)多徑雜波抑制方法[J]. 電子與信息學(xué)報(bào), 2018, 40(12): 2841-2847. doi: 10.11999/JEIT180097
引用本文: 趙志欣, 周新華, 洪升, 翁濤, 王玉皞. 基于載波域自適應(yīng)迭代濾波器的無源雷達(dá)多徑雜波抑制方法[J]. 電子與信息學(xué)報(bào), 2018, 40(12): 2841-2847. doi: 10.11999/JEIT180097
Zhixin ZHAO, Xinhua ZHOU, Sheng HONG, Tao WENG, Yuhao WANG. Multipath Clutter Rejection Approach Based on Carrier Domain Adaptive Iterative Filter in Passive Bistatic Radar[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2841-2847. doi: 10.11999/JEIT180097
Citation: Zhixin ZHAO, Xinhua ZHOU, Sheng HONG, Tao WENG, Yuhao WANG. Multipath Clutter Rejection Approach Based on Carrier Domain Adaptive Iterative Filter in Passive Bistatic Radar[J]. Journal of Electronics & Information Technology, 2018, 40(12): 2841-2847. doi: 10.11999/JEIT180097

基于載波域自適應(yīng)迭代濾波器的無源雷達(dá)多徑雜波抑制方法

doi: 10.11999/JEIT180097 cstr: 32379.14.JEIT180097

  • 南昌大學(xué)信息工程學(xué)院 ??南昌 ??330031

基金項(xiàng)目: 國家自然科學(xué)基金(61461030, 61661032, 61761030)，江西省科技廳自然科學(xué)項(xiàng)目(20161BAB203079, 20161BAB212038)
詳細(xì)信息
    作者簡介:

    趙志欣：女，1986年生，講師，博士，主要研究方向?yàn)槔走_(dá)信號(hào)處理

    周新華：男，1994年生，碩士生，研究方向?yàn)橥廨椛湓蠢走_(dá)雜波抑制

    洪升：女，1987年生，講師，博士，主要研究方向?yàn)殛嚵行盘?hào)處理和雷達(dá)信號(hào)處理

    翁濤：男，1995年生，碩士生，研究方向?yàn)橥廨椛湓蠢走_(dá)數(shù)據(jù)處理

    王玉皞：男，1977年生，教授，博士，主要研究方向?yàn)槔走_(dá)通信一體化

    通訊作者:

    洪 升　 shenghong@ncu.edu.cn

  • 中圖分類號(hào): TN958

Multipath Clutter Rejection Approach Based on Carrier Domain Adaptive Iterative Filter in Passive Bistatic Radar

  • School of Information Engineering, Nanchang University, Nanchang 330031, China

Funds: The National Natural Science Foundation of China (61461030, 61661032, 61761030), The Natural Science Fund of Jiangxi Province (20161BAB203079, 20161BAB212038)
  • 摘要: 在無源雷達(dá)系統(tǒng)中，監(jiān)測通道信號(hào)中存在零頻和非零頻多徑雜波，影響目標(biāo)的檢測。時(shí)域自適應(yīng)迭代濾波器(如LMS, NLMS, RLS等)常被用于無源雷達(dá)雜波抑制，但這些方法只適用于零頻多徑雜波。該文針對零頻和非零頻多徑雜波的問題，結(jié)合數(shù)字廣播電視信號(hào)的正交頻分復(fù)用波形特征，提出一種基于載波域自適應(yīng)迭代濾波器的雜波抑制算法。該算法利用同一載頻下含有相同多普勒頻移的多徑雜波的相關(guān)性原理，進(jìn)行雜波抑制。仿真和實(shí)測數(shù)據(jù)處理結(jié)果證明了算法的有效性。
    Abstract: In passive bistatic radar systems, there exists the zero and non-zero Doppler shift multipath clutter in the surveillance channel. The multipath clutter affects the target detection. Temporal adaptive iterative filter such as Least Mean Square (LMS), Normalized Least Mean Square (NLMS) and Recursive Least Square (RLS) are often used to reject multipath clutter in passive bistatic radar, but these methods are only applicable to reject zero Doppler shift multipath clutter. To solve the problem of zero and non-zero Doppler shift multipath clutter, combined with the orthogonal frequency division multiplexing waveform features of digital broadcasting television signals, a clutter rejection algorithm is proposed based on carrier domain adaptive iterative filter. The algorithm utilizes the correlation of multipath clutter with the same Doppler shift at the same carrier frequency in subcarrier domain to reject the zero and non-zero Doppler shift multipath clutter. Simulation and experiment data processing results show the superiority of the proposed algorithm.
    • HTML全文

  • 圖  1  RLS-CD算法的濾波過程流程圖

    圖  3  RLS-C算法抑制后的RD譜

    圖  4  RLS-CD算法抑制后的RD譜

    圖  5  RLS-C算法和RLS-CD算法抑制后目標(biāo)距離元截面圖

    圖  2  雜波抑制前的RD譜

    圖  7  實(shí)測數(shù)據(jù)經(jīng)RLS-C算法抑制后的RD譜

    圖  8  實(shí)測數(shù)據(jù)經(jīng)RLS-C算法抑制后的RD譜

    圖  9  RLS-C算法和RLS-CD算法抑制后目標(biāo)距離元截面圖

    圖  6  實(shí)測數(shù)據(jù)雜波抑制前的RD譜

    表  1  模擬多徑及目標(biāo)的相關(guān)參數(shù)

    參數(shù) 采樣點(diǎn)延遲 多普勒頻移(Hz) 信噪比(dB)
    零頻多徑 0, 1,···, 12 0 60, 55,···, 0
    非零頻多徑 6, 8 –1, 1 10, 20
    目標(biāo)回波 10 8 –5
    下載: 導(dǎo)出CSV
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出版歷程
  • 收稿日期:  2018-01-24
  • 修回日期:  2018-06-01
  • 網(wǎng)絡(luò)出版日期:  2018-08-14
  • 刊出日期:  2018-12-01

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