一種大加速度機(jī)動(dòng)目標(biāo)微動(dòng)參數(shù)估計(jì)方法

李彥兵; 張曦文; 李飛; 陳大慶; 高紅衛(wèi)

doi:10.11999/JEIT160261

一種大加速度機(jī)動(dòng)目標(biāo)微動(dòng)參數(shù)估計(jì)方法

doi: 10.11999/JEIT160261 cstr: 32379.14.JEIT160261

1.
(北京無線電測(cè)量研究所北京 100854) ②(中國(guó)人民解放軍駐航天二院二十三所軍代表室北京 100854) ③(太原衛(wèi)星發(fā)射中心試驗(yàn)技術(shù)部太原 030027)

基金項(xiàng)目:

國(guó)家自然科學(xué)基金(61271417)

計(jì)量
- 文章訪問數(shù): 1492
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- 被引次數(shù): 0
出版歷程
- 收稿日期: 2016-03-21
- 修回日期: 2016-07-28
- 刊出日期: 2017-01-19

Estimation of Micro-motion Feature for Large Accelerated Target

1.
(Beijing Institute of Radio Measurement, Beijing 100854, China)
2.
(PLA Representative office in No.23 Institute of the Second Academy of China Aerospace, Beijing 100854, China)

Funds:

The National Natural Science Foundation of China (61271417)

摘要

摘要: 運(yùn)動(dòng)目標(biāo)具有大加速度時(shí)，在一定的觀測(cè)時(shí)間內(nèi)，其瞬時(shí)多普勒頻率是模糊的。若目標(biāo)存在微動(dòng)，相應(yīng)產(chǎn)生的微多普勒會(huì)疊加于模糊的多普勒頻率之上。這種現(xiàn)象常見于高速機(jī)動(dòng)目標(biāo)。針對(duì)提取具有大加速度微動(dòng)目標(biāo)的運(yùn)動(dòng)特征問題，該文提出一種參數(shù)估計(jì)方法。通過對(duì)目標(biāo)多普勒頻率的解模糊以及對(duì)目標(biāo)整體運(yùn)動(dòng)的估計(jì)和補(bǔ)償，提取目標(biāo)的微多普勒分量，在此基礎(chǔ)上估計(jì)目標(biāo)的微動(dòng)周期?；诜抡鏀?shù)據(jù)和實(shí)測(cè)數(shù)據(jù)的分析表明，該方法適用于估計(jì)大加速度機(jī)動(dòng)目標(biāo)的微動(dòng)參數(shù)問題。
- 機(jī)動(dòng)目標(biāo) /
- 微多普勒 /
- 運(yùn)動(dòng)補(bǔ)償 /
- 參數(shù)估計(jì) /
- 解模糊
Abstract: In a certain observation time duration, the instantaneous frequency of motion target with large acceleration is ambiguous. This case is usually met in flexible-motion target with high velocity. If target has micro-motion, it will cause micro-Doppler modulation which adds in the ambiguous Doppler frequency. In order to extract micro-motion feature of large acceleration target, a parameter estimation method is proposed. Through the ambiguity resolution of Doppler frequency and the estimation and compensation of bulk motion of target, micro-Doppler extraction is achieved. And then, micro-motion period is estimated. Analysis based on simulation and measured data show that the method is suit for micro-motion parameter estimation of large acceleration flexible-motion target.
- Flexible-motion target; Micro-Doppler /
- Motion compensation /
- Parameter estimation /
- Ambiguity resolution /

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