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基于參數(shù)化時(shí)頻分析的進(jìn)動(dòng)錐裙目標(biāo)瞬時(shí)微多普勒頻率提取方法

肖金國(guó),  杜蘭,  韓勛,  曹文杰,  劉宏偉

肖金國(guó), 杜蘭, 韓勛, 曹文杰, 劉宏偉. 基于參數(shù)化時(shí)頻分析的進(jìn)動(dòng)錐裙目標(biāo)瞬時(shí)微多普勒頻率提取方法[J]. 電子與信息學(xué)報(bào), 2016, 38(1): 90-96. doi: 10.11999/JEIT150505
引用本文: 肖金國(guó), 杜蘭, 韓勛, 曹文杰, 劉宏偉. 基于參數(shù)化時(shí)頻分析的進(jìn)動(dòng)錐裙目標(biāo)瞬時(shí)微多普勒頻率提取方法[J]. 電子與信息學(xué)報(bào), 2016, 38(1): 90-96. doi: 10.11999/JEIT150505
XIAO Jinguo, DU Lan, HAN Xun, CAO Wenjie, LIU Hongwei. Micro-Doppler Frequency Extraction for Cone-skirt Shaped Target with Precession Based on Parameterized Time-frequency Analysis[J]. Journal of Electronics & Information Technology, 2016, 38(1): 90-96. doi: 10.11999/JEIT150505
Citation: XIAO Jinguo, DU Lan, HAN Xun, CAO Wenjie, LIU Hongwei. Micro-Doppler Frequency Extraction for Cone-skirt Shaped Target with Precession Based on Parameterized Time-frequency Analysis[J]. Journal of Electronics & Information Technology, 2016, 38(1): 90-96. doi: 10.11999/JEIT150505

基于參數(shù)化時(shí)頻分析的進(jìn)動(dòng)錐裙目標(biāo)瞬時(shí)微多普勒頻率提取方法

doi: 10.11999/JEIT150505 cstr: 32379.14.JEIT150505
基金項(xiàng)目: 

國(guó)家自然科學(xué)基金(61271024, 61201292, 61322103)，高等學(xué)校博士學(xué)科點(diǎn)專(zhuān)項(xiàng)科研基金博導(dǎo)類(lèi)基金(20130203110013)，陜西省自然科學(xué)基礎(chǔ)研究計(jì)劃(2015JZ016)

Micro-Doppler Frequency Extraction for Cone-skirt Shaped Target with Precession Based on Parameterized Time-frequency Analysis

Funds: 

The National Natural Science Foundation of China (61271024, 61201292, 61322103), The Foundation for Doctoral Supervisor of China (20130203110013), The Science Foundation of Shaanxi Province (2015JZ016)

  • 摘要: 微動(dòng)目標(biāo)散射點(diǎn)的微多普勒對(duì)目標(biāo)運(yùn)動(dòng)、結(jié)構(gòu)參數(shù)的估計(jì)具有重要意義。該文針對(duì)表面光滑的錐裙目標(biāo)，首先依據(jù)進(jìn)動(dòng)錐裙目標(biāo)的等效散射點(diǎn)模型，推導(dǎo)出散射點(diǎn)的理論微多普勒曲線表達(dá)式。結(jié)合進(jìn)動(dòng)調(diào)制的錐裙目標(biāo)微多普勒曲線為多階正弦級(jí)數(shù)疊加的先驗(yàn)信息，提出一種基于參數(shù)化時(shí)頻分析的進(jìn)動(dòng)錐裙目標(biāo)微多普勒曲線提取方法。針對(duì)多分量信號(hào)組成的錐裙目標(biāo)回波，該方法利用相干信號(hào)單距離多普勒干涉(CSRDI)方法估計(jì)錐旋頻率，進(jìn)而利用參數(shù)化時(shí)頻分析估計(jì)散射點(diǎn)的微多普勒曲線，之后利用帶阻濾波器分離估計(jì)得到的散射點(diǎn)回波信號(hào)。基于電磁仿真數(shù)據(jù)驗(yàn)證了所提方法的有效性。
    Abstract: The micro-Doppler signatures can be utilized to the estimation of the motion and structure parameters of the targets. In this paper, based on the effective point scatterer model of the cone-skirt shaped target, the formulas of micro-Doppler induced by the precession are derived. Since the micro-Doppler curves induced by the precession are in the forms of the multi-stage superimposed sine series for the cone-skirt shaped target, an approach to extract the micro-Doppler frequency based on the parameterized time-frequency analysis is proposed. In this method, the precession frequency is first estimated via the Coherent Single Range Doppler Interferometry (CSRDI) algorithm, then the micro-Doppler curve of each scatterer is estimated based on the parameterized time-frequency analysis, and finally the scatterers echoes can be separated with the band-stop filter. In the simulation experiments, the proposed method is evaluated based on the electromagnetic computation data.
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出版歷程
  • 收稿日期:  2015-04-30
  • 修回日期:  2015-09-06
  • 刊出日期:  2016-01-19

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